QUALITY CATEGORY A & CATEGORY B FACTORY

At present, domestic roofs can be roughly divided into household Chinese glazed roof tile roofs, concrete flat roofs and color steel tile roofs. For the installation of rooftop solar power plants, "waterproofing" has to be said to be a very important factor!   First of all, we need to tell you that the general principle of roof waterproof treatment is: it is better to guide rather than block, that is, to ensure that the node treatment can smoothly let the water drain off when the water is accumulated in rainstorm, so as to ensure that the roof does not leak.   Therefore, in the design, the first step should be to ensure that the bracket base is not arranged perpendicular to the drainage direction and does not hinder the drainage of roof rainwater. In addition, when installing the photovoltaic system directly on the existing roof during construction, the base does not have any relationship with the structural layer of the original roof. Therefore, to ensure the safety of the structure, it is necessary to ensure that the base is placed smoothly and neatly, and measures need to be taken to fix it to avoid overturning, sliding, and other phenomena. Due to the lack of relationship between the base and the structural layer, it is difficult to install an additional waterproof layer. It is necessary to try to preserve the waterproof layer of the original roof as much as possible to prevent leakage.   For situations where drilling is necessary to damage the original roof, it is necessary to adapt to local conditions and make different treatments according to different situations: 1. Waterproofing of photovoltaic brackets on concrete flat roofs For new buildings with concrete flat roofs or villa concrete sloping roofs (covered with tiles), bolts should usually be embedded during design and roof waterproofing should be done according to conventional practices. For existing buildings with concrete flat roofs or villa concrete sloping roofs (covered with tiles), the roof structure should be confirmed first. When connecting the photovoltaic module base to the structural layer, there are weak waterproof links around the metal embedded parts at the top of the base. If not handled properly, rainwater can easily seep from around the bolts of the embedded parts to the structural layer, causing corrosion to the load-bearing steel bars of the structural layer, forming a safety hazard. Therefore, when setting up the photovoltaic module base, the waterproof layer should be laid on the upper part of the base and metal embedded parts, and sealed around the anchor bolts. The waterproof layer should be filled with waterproof sealant to isolate the rainwater infiltration path. In addition, an additional waterproof layer should be added to the lower part of the base. Even if there is leakage at the top of the base, rainwater will not reach the structural layer.   2. Waterproof installation of color steel tile photovoltaic brackets For colored steel tile roofs, the steel structure of the photovoltaic system needs to penetrate the original waterproof layer and profiled steel plates, and be fixed to the main steel structure of the building; Refer to the waterproofing method of colored steel tile roofs for steam insulation, insulation, and waterproofing treatment. The focus of construction is to remove rust, seal, and apply waterproof coatings to the base and periphery. Local leakage points on the colored steel tile roof should be sealed with high-quality neutral weather resistant sealant; For locally corroded color steel plates, they need to be replaced before installing photovoltaic modules. 1) For the case where the cross-section of the color steel plate rib plate is trapezoidal: The solar bracket is usually connected to the color steel plate from the side or top surface through self tapping bolts. Self tapping bolts must be equipped with matching weather resistant sealing and waterproof gaskets, and after fixing the self tapping bolts, high-quality neutral weather resistant sealant must be applied to the screws. 2) For situations where cable sleeves pass through roof panels: there are practices in the existing national standard atlas. In design and construction, it can be selected according to the specific situation of the actual project. 3) For the case of cables passing through the roof panel: Teflon sheets can be used for waterproofing. Detai cover is a type of roof waterproof structure, often used on roofs with colored profiled steel plates. It has good physical properties and chemical corrosion resistance, and can overcome problems such as water leakage of rigid waterproof materials.   3. Waterproofing treatment at the roof perforation of solar bracket manufacturers For existing buildings with concrete flat roofs or villa concrete sloping roofs, if chemical anchor bolts are used to fix photovoltaic brackets, the thickness of the protective layer or surface layer should be confirmed first. For prefabricated floor roofs with large load-bearing capacity per unit area, the base fixation method of prefabricated cement piers can be used on the roof, and the brackets can be fixed using chemical anchor bolts after solidification. For sloping roofs covered with tiles, the depth of drilling should be confirmed. After fixing the chemical anchor bolts, the position where the bolts pass through the tiles should be well treated with waterproof sealant. Chemical anchor bolts have high load-bearing capacity, resistance to fatigue and aging, and some models can withstand dynamic and impact loads; There is no expansion force on the substrate and no compressive stress is generated, therefore, it will not have adverse effects on roof waterproofing.

About Bridge The cable tray is divided into slot type, tray type, ladder type, mesh type, and other structures, consisting of brackets, brackets, and installation accessories. It can be erected independently or attached to various buildings (structures) and pipe rack supports, reflecting the characteristics of simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts need to be galvanized and installed on the outdoor bridge outside the building. If it is located near the seaside or in a corrosive area, the material must have anti-corrosion, moisture resistance, good adhesion, and high impact resistance characteristics. A bridge is a bracket that supports and places cables. Bridge trays are commonly used in engineering, as long as cables are laid, they must be used. As a supporting project of wiring engineering, cable trays do not have specific specifications and guidance. The specifications and programs of various manufacturers lack universality. Therefore, the design and selection process should be based on the type and quantity of cables in each weak current system, and the appropriate bridge tray should be reasonably selected. Cable trays have the characteristics of complete variety, wide application, high strength, light structure, low cost, simple construction, flexible wiring, installation standards, and beautiful appearance. Classification of cable trays: stepped cable trays, tray type cable trays, trough type cable trays, and large span cable trays.   About Trunking Cable trough, also known as wiring trough, wiring trough, or wiring trough (depending on the location), is used to organize power cables, data cables, and other wires in a standardized manner and fix them to electrical appliances on walls or ceilings. There are generally two types of materials, plastic and metal, which can play different roles. The wiring duct is divided into: insulated wiring duct, split type wiring duct, mini type wiring duct, separated type wiring duct, indoor decoration wiring duct, integrated insulated wiring duct, telephone wiring duct, Japanese telephone wiring duct, open wire wiring duct, circular wiring duct, exhibition partition wiring duct, circular floor wiring duct, soft circular floor wiring duct, cover type wiring duct, etc. According to the different materials, the trunking is divided into various types, commonly used including environmentally friendly PVC trunking, halogen-free PPO trunking, halogen-free PC/ABS trunking, steel aluminum and other metal trunking, and so on. Trunking characteristics: suitable for large span installation, extremely convenient installation, extremely safe and reliable, flexible wiring, and strong interchangeability.   The difference between bridge and trunking 1. The size specifications vary. The bridge is relatively large (200 × 100 to 600 × 200), with relatively small trunking. If there are many cables and wires, it is recommended to use a bridge. 2. The material thickness varies. According to JGJ16-2008-5.1, metal trunking, also known as trough type cable trays, is generally a trough type component formed by bending a whole sheet of steel plate with a thickness of 0.4-1.5mm. The conceptual difference between it and cable trays is that the height to width ratio is different, the tray frame is shallow and wide, and the metal trunking has a certain depth and closure. But the cable tray is more sturdy than the cable tray, and it is more used to accommodate cables, and of course, it can also accommodate wires, usually for strong current systems. 3. The filling rate varies. According to JGJ16-20088.5.3, the total cross-section of wires and cables in the trunking should not exceed 20% of the cross-section inside the trunking, and the number of current carrying conductors should not exceed 30. The total cross-section of cables in the bridge should not exceed 40% of the cross-section. This is due to different installation heights. When the installation height is low, a cover plate is necessary. If there is a cover plate, heat dissipation is not good, and the filling rate is lower.   4. Different sealing properties. The metal trunking is well sealed and does not need to be supported by brackets. It can be laid in cable trenches and building mezzanine layers. Some trough type cable trays are semi open and must be supported by brackets, which are usually installed in the air inside or outside the house.   5. Different intensities. The cable tray is mainly used for laying power cables and control cables, and the strength of the trunking is relatively low. It is usually used for laying wires and communication cables, such as network telephones.   6. The turning radius is different. The turning radius of the cable tray is relatively large, and most of the trunking turns at right angles.   7. Different spans. The span of the bridge is relatively large, and the trunking is relatively small. Therefore, there is a significant difference in the number of fixed supports and hangers.   8. The spacing between supports and hangers is different. According to JGJ16-2008, the length of the trunking is not greater than 2m, and the length of the cable tray is 1.5-3m.   9. Different installation methods. The bridge has special specifications (see CECS31.91 for details), while the trunking has no special Gauge fixing for fixing.   10. Cover plate issue. In CECS31 "Design Specification for Steel Cable Tray Engineering", the definition is that the tray is a collective term and the cover plate is an accessory. As mentioned in JGJ16-20088.10.3, when the installation height of the tray cannot meet the requirements, cover plate protection should be added. That is to say, the definition of the term bridge does not include cover plates. However, in GB29415-2013 "Fire-resistant Cable Tray Boxes", the cable tray contains a cover plate and is an integral part of the cable tray.

An earthquake resistant bracket is a bracket with earthquake resistance function, which is installed as an earthquake resistant measure on mechanical and electrical pipeline equipment. Installing seismic supports can avoid and reduce damage to mechanical and electrical equipment in buildings caused by earthquakes. Reduce the damage caused by earthquakes, protect equipment, and reduce unnecessary threats to property and life safety.   Seismic supports are widely used in the construction industry. Residential buildings, large squares, large supermarkets, and other areas require the installation of corresponding seismic supports based on the local earthquake crack resistance. Once an earthquake or other highly shaking disasters occur in the local area, it can effectively prevent the occurrence of secondary disasters. The specific explanations are as follows:   Hazards of earthquakes: 1. During the earthquake, the HVAC system failed and smoke exhaust ducts, accident ventilation ducts, and related equipment were damaged. 2. During the earthquake, the electrical system failed and the electrical piping, cable ladder, slot box and Bus duct were damaged.   3. During the earthquake, the water supply and drainage system and fire protection system failed, such as damage to indoor water supply, hot water, and fire protection pipelines.   The function of seismic support: Reduce the occurrence of secondary disasters caused by earthquakes, effectively protect the electromechanical system during earthquakes, and ensure rapid recovery of working conditions after earthquakes; Seismic supports are various components or devices that limit the displacement of ancillary electromechanical engineering facilities, control facility vibration, and transmit loads to the load-bearing structure. After seismic reinforcement, mechanical and electrical engineering facilities such as water supply and drainage, fire protection, heating, ventilation, air conditioning, gas, heat, electricity, and communication in buildings can reduce earthquake damage, reduce and prevent secondary disasters as much as possible when encountering earthquakes with local seismic fortification intensity, thereby achieving the goal of reducing casualties and property losses.   In case of an earthquake, the role of the seismic support can be fully reflected, which can minimize the economic losses and prevent casualties caused by the earthquake. The role of the seismic support should not be underestimated. In general, the anti-seismic support mainly protects waterways and power lines, and prevents the safety of other building facilities in the house on the premise that the house does not collapse, so as to protect other hazards caused by the earthquake, to ensure personal safety and reduce economic losses to a greater extent.

The role of prefabricated supports and hangers is very important, as they can effectively strengthen the stability of buildings, greatly weaken the damage caused by natural disasters such as earthquakes, or accelerate the progress of post earthquake reconstruction. However, the installation and construction of prefabricated supports and hangers require relatively high technology, and the entire process is also very cumbersome. There are many things to pay attention to throughout the entire process to ensure the orderly and efficient installation and construction of prefabricated supports and hangers.   During construction, prefabricated supports and hangers can deviate from pipelines and wire sleeves appropriately, but their deviation should not be too large. The construction of air ducts also allows for a certain degree of deviation, which should be less than twice the total width of the air duct.   At the vertical turning of the pipeline, the installation of prefabricated supports and hangers is necessary. When the turning angle is greater than or less than 90 °, attention should be paid to the length of the seismic bracket, which should be slightly greater than the design length. The bracket should be set on the side and vertical surface of the bracket to ensure structural stability.   In the design of prefabricated supports and hangers for water supply pipelines, the impact of water expansion and contraction caused by thermal expansion and contraction on pipe diameter and volume should be fully considered. The distance between pipelines in the vertical direction should comply with design rules, and the distance between pipelines and main roads should be adjusted appropriately.   Rigid prefabricated supports and hangers cannot be directly moved to other parts of the structure for use. Due to the special nature of rigid materials, their support structure differs greatly from general support structures, and direct use cannot provide protection.   When pipelines pass through narrow parts of a building, attention should be paid to the design and construction of settlement and displacement. The optimal angle for installing prefabricated supports and hangers is 45 °, but there may be some deviations during actual construction, which require on-site analysis and corresponding adjustments.   In the installation of single pipe door type or multi pipe door type, attention should be paid to the angle of slant support of fabricated supports and hangers. The angle should not deviate from the central symmetry line by 2.5 ° generally, or the support capacity of the support will be weakened.

At present, domestic roofs can be roughly divided into household Chinese glazed roof tile roofs, concrete flat roofs and color steel tile roofs. For the installation of rooftop solar power plants, "waterproofing" has to be said to be a very important factor!   First of all, we need to tell you that the general principle of roof waterproof treatment is: it is better to guide rather than block, that is, to ensure that the node treatment can smoothly let the water drain off when the water is accumulated in rainstorm, so as to ensure that the roof does not leak.   Therefore, in the design, the first step should be to ensure that the bracket base is not arranged perpendicular to the drainage direction and does not hinder the drainage of roof rainwater. In addition, when installing the photovoltaic system directly on the existing roof during construction, the base does not have any relationship with the structural layer of the original roof. Therefore, to ensure the safety of the structure, it is necessary to ensure that the base is placed smoothly and neatly, and measures need to be taken to fix it to avoid overturning, sliding, and other phenomena. Due to the lack of relationship between the base and the structural layer, it is difficult to install an additional waterproof layer. It is necessary to try to preserve the waterproof layer of the original roof as much as possible to prevent leakage.   For situations where drilling is necessary to damage the original roof, it is necessary to adapt to local conditions and make different treatments according to different situations: 1. Waterproofing of photovoltaic brackets on concrete flat roofs For new buildings with concrete flat roofs or villa concrete sloping roofs (covered with tiles), bolts should usually be embedded during design and roof waterproofing should be done according to conventional practices. For existing buildings with concrete flat roofs or villa concrete sloping roofs (covered with tiles), the roof structure should be confirmed first. When connecting the photovoltaic module base to the structural layer, there are weak waterproof links around the metal embedded parts at the top of the base. If not handled properly, rainwater can easily seep from around the bolts of the embedded parts to the structural layer, causing corrosion to the load-bearing steel bars of the structural layer, forming a safety hazard. Therefore, when setting up the photovoltaic module base, the waterproof layer should be laid on the upper part of the base and metal embedded parts, and sealed around the anchor bolts. The waterproof layer should be filled with waterproof sealant to isolate the rainwater infiltration path. In addition, an additional waterproof layer should be added to the lower part of the base. Even if there is leakage at the top of the base, rainwater will not reach the structural layer.   2. Waterproof installation of color steel tile photovoltaic brackets For colored steel tile roofs, the steel structure of the photovoltaic system needs to penetrate the original waterproof layer and profiled steel plates, and be fixed to the main steel structure of the building; Refer to the waterproofing method of colored steel tile roofs for steam insulation, insulation, and waterproofing treatment. The focus of construction is to remove rust, seal, and apply waterproof coatings to the base and periphery. Local leakage points on the colored steel tile roof should be sealed with high-quality neutral weather resistant sealant; For locally corroded color steel plates, they need to be replaced before installing photovoltaic modules. 1) For the case where the cross-section of the color steel plate rib plate is trapezoidal: The solar bracket is usually connected to the color steel plate from the side or top surface through self tapping bolts. Self tapping bolts must be equipped with matching weather resistant sealing and waterproof gaskets, and after fixing the self tapping bolts, high-quality neutral weather resistant sealant must be applied to the screws. 2) For situations where cable sleeves pass through roof panels: there are practices in the existing national standard atlas. In design and construction, it can be selected according to the specific situation of the actual project. 3) For the case of cables passing through the roof panel: Teflon sheets can be used for waterproofing. Detai cover is a type of roof waterproof structure, often used on roofs with colored profiled steel plates. It has good physical properties and chemical corrosion resistance, and can overcome problems such as water leakage of rigid waterproof materials.   3. Waterproofing treatment at the roof perforation of solar bracket manufacturers For existing buildings with concrete flat roofs or villa concrete sloping roofs, if chemical anchor bolts are used to fix photovoltaic brackets, the thickness of the protective layer or surface layer should be confirmed first. For prefabricated floor roofs with large load-bearing capacity per unit area, the base fixation method of prefabricated cement piers can be used on the roof, and the brackets can be fixed using chemical anchor bolts after solidification. For sloping roofs covered with tiles, the depth of drilling should be confirmed. After fixing the chemical anchor bolts, the position where the bolts pass through the tiles should be well treated with waterproof sealant. Chemical anchor bolts have high load-bearing capacity, resistance to fatigue and aging, and some models can withstand dynamic and impact loads; There is no expansion force on the substrate and no compressive stress is generated, therefore, it will not have adverse effects on roof waterproofing.

About Bridge The cable tray is divided into slot type, tray type, ladder type, mesh type, and other structures, consisting of brackets, brackets, and installation accessories. It can be erected independently or attached to various buildings (structures) and pipe rack supports, reflecting the characteristics of simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts need to be galvanized and installed on the outdoor bridge outside the building. If it is located near the seaside or in a corrosive area, the material must have anti-corrosion, moisture resistance, good adhesion, and high impact resistance characteristics. A bridge is a bracket that supports and places cables. Bridge trays are commonly used in engineering, as long as cables are laid, they must be used. As a supporting project of wiring engineering, cable trays do not have specific specifications and guidance. The specifications and programs of various manufacturers lack universality. Therefore, the design and selection process should be based on the type and quantity of cables in each weak current system, and the appropriate bridge tray should be reasonably selected. Cable trays have the characteristics of complete variety, wide application, high strength, light structure, low cost, simple construction, flexible wiring, installation standards, and beautiful appearance. Classification of cable trays: stepped cable trays, tray type cable trays, trough type cable trays, and large span cable trays.   About Trunking Cable trough, also known as wiring trough, wiring trough, or wiring trough (depending on the location), is used to organize power cables, data cables, and other wires in a standardized manner and fix them to electrical appliances on walls or ceilings. There are generally two types of materials, plastic and metal, which can play different roles. The wiring duct is divided into: insulated wiring duct, split type wiring duct, mini type wiring duct, separated type wiring duct, indoor decoration wiring duct, integrated insulated wiring duct, telephone wiring duct, Japanese telephone wiring duct, open wire wiring duct, circular wiring duct, exhibition partition wiring duct, circular floor wiring duct, soft circular floor wiring duct, cover type wiring duct, etc. According to the different materials, the trunking is divided into various types, commonly used including environmentally friendly PVC trunking, halogen-free PPO trunking, halogen-free PC/ABS trunking, steel aluminum and other metal trunking, and so on. Trunking characteristics: suitable for large span installation, extremely convenient installation, extremely safe and reliable, flexible wiring, and strong interchangeability.   The difference between bridge and trunking 1. The size specifications vary. The bridge is relatively large (200 × 100 to 600 × 200), with relatively small trunking. If there are many cables and wires, it is recommended to use a bridge. 2. The material thickness varies. According to JGJ16-2008-5.1, metal trunking, also known as trough type cable trays, is generally a trough type component formed by bending a whole sheet of steel plate with a thickness of 0.4-1.5mm. The conceptual difference between it and cable trays is that the height to width ratio is different, the tray frame is shallow and wide, and the metal trunking has a certain depth and closure. But the cable tray is more sturdy than the cable tray, and it is more used to accommodate cables, and of course, it can also accommodate wires, usually for strong current systems. 3. The filling rate varies. According to JGJ16-20088.5.3, the total cross-section of wires and cables in the trunking should not exceed 20% of the cross-section inside the trunking, and the number of current carrying conductors should not exceed 30. The total cross-section of cables in the bridge should not exceed 40% of the cross-section. This is due to different installation heights. When the installation height is low, a cover plate is necessary. If there is a cover plate, heat dissipation is not good, and the filling rate is lower.   4. Different sealing properties. The metal trunking is well sealed and does not need to be supported by brackets. It can be laid in cable trenches and building mezzanine layers. Some trough type cable trays are semi open and must be supported by brackets, which are usually installed in the air inside or outside the house.   5. Different intensities. The cable tray is mainly used for laying power cables and control cables, and the strength of the trunking is relatively low. It is usually used for laying wires and communication cables, such as network telephones.   6. The turning radius is different. The turning radius of the cable tray is relatively large, and most of the trunking turns at right angles.   7. Different spans. The span of the bridge is relatively large, and the trunking is relatively small. Therefore, there is a significant difference in the number of fixed supports and hangers.   8. The spacing between supports and hangers is different. According to JGJ16-2008, the length of the trunking is not greater than 2m, and the length of the cable tray is 1.5-3m.   9. Different installation methods. The bridge has special specifications (see CECS31.91 for details), while the trunking has no special Gauge fixing for fixing.   10. Cover plate issue. In CECS31 "Design Specification for Steel Cable Tray Engineering", the definition is that the tray is a collective term and the cover plate is an accessory. As mentioned in JGJ16-20088.10.3, when the installation height of the tray cannot meet the requirements, cover plate protection should be added. That is to say, the definition of the term bridge does not include cover plates. However, in GB29415-2013 "Fire-resistant Cable Tray Boxes", the cable tray contains a cover plate and is an integral part of the cable tray.

An earthquake resistant bracket is a bracket with earthquake resistance function, which is installed as an earthquake resistant measure on mechanical and electrical pipeline equipment. Installing seismic supports can avoid and reduce damage to mechanical and electrical equipment in buildings caused by earthquakes. Reduce the damage caused by earthquakes, protect equipment, and reduce unnecessary threats to property and life safety.   Seismic supports are widely used in the construction industry. Residential buildings, large squares, large supermarkets, and other areas require the installation of corresponding seismic supports based on the local earthquake crack resistance. Once an earthquake or other highly shaking disasters occur in the local area, it can effectively prevent the occurrence of secondary disasters. The specific explanations are as follows:   Hazards of earthquakes: 1. During the earthquake, the HVAC system failed and smoke exhaust ducts, accident ventilation ducts, and related equipment were damaged. 2. During the earthquake, the electrical system failed and the electrical piping, cable ladder, slot box and Bus duct were damaged.   3. During the earthquake, the water supply and drainage system and fire protection system failed, such as damage to indoor water supply, hot water, and fire protection pipelines.   The function of seismic support: Reduce the occurrence of secondary disasters caused by earthquakes, effectively protect the electromechanical system during earthquakes, and ensure rapid recovery of working conditions after earthquakes; Seismic supports are various components or devices that limit the displacement of ancillary electromechanical engineering facilities, control facility vibration, and transmit loads to the load-bearing structure. After seismic reinforcement, mechanical and electrical engineering facilities such as water supply and drainage, fire protection, heating, ventilation, air conditioning, gas, heat, electricity, and communication in buildings can reduce earthquake damage, reduce and prevent secondary disasters as much as possible when encountering earthquakes with local seismic fortification intensity, thereby achieving the goal of reducing casualties and property losses.   In case of an earthquake, the role of the seismic support can be fully reflected, which can minimize the economic losses and prevent casualties caused by the earthquake. The role of the seismic support should not be underestimated. In general, the anti-seismic support mainly protects waterways and power lines, and prevents the safety of other building facilities in the house on the premise that the house does not collapse, so as to protect other hazards caused by the earthquake, to ensure personal safety and reduce economic losses to a greater extent.