Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 23639-2009 Energy Conservation and Corrosion-resistant Steel-made Cable Support System, the following technical changes have been made with respect to GB/T 23639-2009:
——Hot-dip galvanized steel plate and steel strip, stainless steel plate and steel strip, and enclosure protection grade standard are quoted;
——Corrosion-resistant cable support system is modified in terms and definitions, and VCI double metal inorganic coating and organic coating are added;
——The contents of stainless steel cable support system are added;
——Corrosion resistance classification is added for the model;
——The structural requirements of cover plate are added;
——Requirements of protection grade are added;
——Energy conservation definition and energy conservation rate index are modified;
——The requirements for the minimum local thickness of corrosion-resistant coating are added;
——Determination of metal inorganic coating and organic coating adopted as corrosion-resistant coating is added;
——Mechanical loading test method is deleted;
——Energy conservation rate test of cable support system in Annex C is modified;
——Test load for 3.5~6.0m span in cable support system load test in Annex D is added.
This standard is proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of Technical Committee on Electric Accessories of Standardization Administration of China (SAC/TC 67).
The previous edition of the standard replaced by this standard is as follows:
——GB/T 23639-2009.
Introduction
In order to cope with global climate change, reduce carbon emissions, make efforts to construct resource-conserving and environment-friendly society, greatly improve the promotion and application of energy conservation and corrosion-resistant steel-made cable support system technology and product and accelerate the ungrade of the product, hot-dip galvanized steel plate and stainless steel plate materials are selected for the product and Energy Conservation and Corrosion-resistant Steel-made Cable Support System is revised according to the engineering practice of recent years.
This standard specifies the energy conservation and corrosion-resistant steel-made cable support system, explains the energy conservation and corrosion-resistant concept of cable support system and mainly reflects the technical standard characteristics of energy conservation and corrosion resistance; the resources and energy are optimized through technological innovation, and the full life cycle of product from material utilization, production manufacturing to engineering application complies with the requirements of energy conservation, environmental protection and low-carbon emission; the strength of energy conservation and corrosion-resistant steel-made cable support system is increased and material consumption is reduced by concave-convex corrugation configuration technology, at the same time, the heat-dissipation area is increased, the cable operating temperature environment is improved by making full use of heat conduction and heat exchange technology, thus reducing the line loss and reaching the purpose of energy conservation and emission reduction; hot-dip galvanized steel plate or stainless steel is selected for the product, in particular, volatile corrosion inhibitor (VCI) inorganic coating or organic coating is adopted for surface corrosion-resistant treatment of hot-dip galvanized steel plate, under the premise of improving corrosion resistance, the pollutant emission is reduced during manufacturing process to provide the product with low-carbon environmental protection and corrosion-resistant characteristics.
Energy Conservation and Corrosion-resistant Steel-made Cable Support System
1 Scope
This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of energy conservation and corrosion-resistant steel-made cable support system (hereafter referred to as cable support system).
This standard is applicable to energy conservation and corrosion-resistant steel-made cable support system used for cables laid in industrial and civil buildings.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 700 Carbon Structural Steels
GB/T 912 Hot-rolled Sheets and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels
GB/T 1720-1979 Method of Test for Adhesion of Paint Films
GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications
GB/T 2518 Continuous Hot-dip Zinc-coated Steel Sheets and Strips
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 3280 Cold Rolled Stainless Steel Plate, Sheet and Strip
GB/T 4208-2008 Degrees of Protection Provided by Enclosure(IP Code)
GB/T 4237 Hot Rolled Stainless Steel Plate, Sheet and Strip
GB/T 4956 Non-magnetic Coatings on Magnetic Substrates - Measurement of Coating Thickness - Magnetic Method
GB/T 9274-1988 Paints and Varnishes; Determination of Resistance to Liquids
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests
GB/T 11253 Cold-rolled Sheets and Strips of Carbon Structural Steels
GB/T 21762-2008 Cable Management - Cable Tray Systems and Cable Ladder Systems
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
cable support system
structure system with continuous rigidity composed of straight section of cable tray or stair-type cable tray and three categories of components such as bend-way cable tray, accessories, support post and used for supporting the cable line
3.2
energy conservation cable support system
cable support system which can save resource (steel) and electric energy efficiency
3.3
corrosion-resistant cable support system
cable support system with strong corrosion-resistant ability against surrounding medium through surface treatment of steel plate or being made of corrosion-resistant stainless steel material
Note: there are three corrosion-resistant modes, i.e. metal inorganic coating, organic coating and stainless steel material. Metal inorganic coating has high-efficient and long-lasting protection function and can resist ultraviolet and aging; it is applicable to chemical gas corrosion like indoor and outdoor moisture and salt mist resistance. Organic coating, with good chemical stability of molecule, corrosion resistance to acid and alkali corrosive medium but poor resistance to ultraviolet and aging, is mainly used for indoor environment rather than outdoor environment.
3.4
VCI double metal inorganic coating
inorganic coating with application of VCI (Volatile Corrosion Inhibitors) technology, lepidosome zinc powder and aluminum powder as filler, silicate as bonding agent and with electroconductive surface
3.5
organic coating
insulated coating formed by painting the organic coating on the surface of cable support system
3.6
hole cable tray
slot-shaped component composed of base plate and side edge with hole or made by one-piece steel plate through punching and bending
3.7
cable tray without hole
slot-shaped component composed of base plate and side edge or made by one-piece steel plate through bending
3.8
compounding cable tray
slot-shaped component that can be combined randomly in bolt or insertion mode
3.9
stair-type cable tray
rigid ladder-shaped component composed of side edge and several crosspieces
3.10
straight-way
a section of cable tray and stair-type cable tray with unchanged direction
3.11
equal radius straight-way
a section of straight-way with equal dimension
3.12
different radius straight-way
a section of straight-way with different dimensions
3.13
bend-way cable tray
a section of cable tray and stair-type cable tray with changed direction
3.14
horizontal bend-way cable tray
component changing the direction of cable tray and stair-type cable tray in the same horizontal plane
3.15
horizontal 3-way cable tray
component in the same horizontal plane, used to connect the cable tray and stair-type cable tray in three directions spaced by 90°
3.16
horizontal 4-way cable tray
component in the same horizontal plane, used to connect the cable tray and stair-type cable tray in four directions spaced by 90°
3.17
upper bend-way cable tray
component changing the direction of cable tray and stair-type cable tray from horizontal plane to the upward
3.18
down bend-way cable tray
component changing the direction of cable tray and stair-type cable tray from horizontal plane to the downward
3.19
vertical 3-way cable tray
component in the same vertical plane, used to connect the cable tray and stair-type cable tray in three directions spaced by 90°
3.20
vertical 4-way cable tray
component in the same vertical plane, used to connect the cable tray and stair-type cable tray in four directions spaced by 90°
3.21
bend-way radius
radius of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.22
fold-type bend-way cable tray
bend-way cable tray made of straight section by connecting two tangent points of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.23
arc-type bend-way cable tray
bend-way cable tray made of arc section of two tangent points of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.24
accessories
component used for the connection and fixation necessary for continuous rigid structure system by connecting straight-way of cable tray or stair-type cable tray or connecting straight-way and bend-way cable tray or used for supplementing the straight-way and bend-way cable tray function
3.25
support post
component directly supporting cable tray or stair-type cable tray
3.26
support arm
rigid component with single fixed end and directly supporting cable tray and stair-type cable tray
3.27
uprightly post
component directly supporting support arm
3.28
suspender
rigid component suspending cable tray and stair-type cable tray
3.29
rated uniformly distributed load
the maximum safe uniformly distributed load borne by cable support system per meter within certain span
Foreword i Introduction iii 1 Scope 2 Normative References 3 Terms and Definitions 4 Classification 5 Requirements 6 Test Methods 7 Inspection Rules 8 Marking, Packaging, Transportation and Storage Annex A (Informative) Material Conservation Rate Determination of Cable Support System Annex B (Normative) Common Thickness of Plates for General Cable Support System Annex C (Normative) Energy Conservation Rate Test of Cable Support System Annex D (Normative) Load Test of Cable Support System (Manual Loading Method) Annex E (Normative) Impact Test of Cable Support System Annex F (Normative) Electrical Continuity Test of Cable Support System References
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This standard is developed in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 23639-2009 Energy Conservation and Corrosion-resistant Steel-made Cable Support System, the following technical changes have been made with respect to GB/T 23639-2009:
——Hot-dip galvanized steel plate and steel strip, stainless steel plate and steel strip, and enclosure protection grade standard are quoted;
——Corrosion-resistant cable support system is modified in terms and definitions, and VCI double metal inorganic coating and organic coating are added;
——The contents of stainless steel cable support system are added;
——Corrosion resistance classification is added for the model;
——The structural requirements of cover plate are added;
——Requirements of protection grade are added;
——Energy conservation definition and energy conservation rate index are modified;
——The requirements for the minimum local thickness of corrosion-resistant coating are added;
——Determination of metal inorganic coating and organic coating adopted as corrosion-resistant coating is added;
——Mechanical loading test method is deleted;
——Energy conservation rate test of cable support system in Annex C is modified;
——Test load for 3.5~6.0m span in cable support system load test in Annex D is added.
This standard is proposed by China Electrical Equipment Industry Association.
This standard is under the jurisdiction of Technical Committee on Electric Accessories of Standardization Administration of China (SAC/TC 67).
The previous edition of the standard replaced by this standard is as follows:
——GB/T 23639-2009.
Introduction
In order to cope with global climate change, reduce carbon emissions, make efforts to construct resource-conserving and environment-friendly society, greatly improve the promotion and application of energy conservation and corrosion-resistant steel-made cable support system technology and product and accelerate the ungrade of the product, hot-dip galvanized steel plate and stainless steel plate materials are selected for the product and Energy Conservation and Corrosion-resistant Steel-made Cable Support System is revised according to the engineering practice of recent years.
This standard specifies the energy conservation and corrosion-resistant steel-made cable support system, explains the energy conservation and corrosion-resistant concept of cable support system and mainly reflects the technical standard characteristics of energy conservation and corrosion resistance; the resources and energy are optimized through technological innovation, and the full life cycle of product from material utilization, production manufacturing to engineering application complies with the requirements of energy conservation, environmental protection and low-carbon emission; the strength of energy conservation and corrosion-resistant steel-made cable support system is increased and material consumption is reduced by concave-convex corrugation configuration technology, at the same time, the heat-dissipation area is increased, the cable operating temperature environment is improved by making full use of heat conduction and heat exchange technology, thus reducing the line loss and reaching the purpose of energy conservation and emission reduction; hot-dip galvanized steel plate or stainless steel is selected for the product, in particular, volatile corrosion inhibitor (VCI) inorganic coating or organic coating is adopted for surface corrosion-resistant treatment of hot-dip galvanized steel plate, under the premise of improving corrosion resistance, the pollutant emission is reduced during manufacturing process to provide the product with low-carbon environmental protection and corrosion-resistant characteristics.
Energy Conservation and Corrosion-resistant Steel-made Cable Support System
1 Scope
This standard specifies the terms and definitions, classification, requirements, test methods, inspection rules, marking, packaging, transportation and storage of energy conservation and corrosion-resistant steel-made cable support system (hereafter referred to as cable support system).
This standard is applicable to energy conservation and corrosion-resistant steel-made cable support system used for cables laid in industrial and civil buildings.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the normative document (including any amendments) applies.
GB/T 700 Carbon Structural Steels
GB/T 912 Hot-rolled Sheets and Strips of Carbon Structural Steels and High Strength Low Alloy Structural Steels
GB/T 1720-1979 Method of Test for Adhesion of Paint Films
GB/T 1804-2000 General Tolerances - Tolerances for Linear and Angular Dimensions without Individual Tolerance Indications
GB/T 2518 Continuous Hot-dip Zinc-coated Steel Sheets and Strips
GB/T 2828.1 Sampling Procedures for Inspection by Attributes - Part 1: Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-lot Inspection
GB/T 3280 Cold Rolled Stainless Steel Plate, Sheet and Strip
GB/T 4208-2008 Degrees of Protection Provided by Enclosure(IP Code)
GB/T 4237 Hot Rolled Stainless Steel Plate, Sheet and Strip
GB/T 4956 Non-magnetic Coatings on Magnetic Substrates - Measurement of Coating Thickness - Magnetic Method
GB/T 9274-1988 Paints and Varnishes; Determination of Resistance to Liquids
GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests
GB/T 11253 Cold-rolled Sheets and Strips of Carbon Structural Steels
GB/T 21762-2008 Cable Management - Cable Tray Systems and Cable Ladder Systems
3 Terms and Definitions
For the purposes of this document, the following terms and definitions apply.
3.1
cable support system
structure system with continuous rigidity composed of straight section of cable tray or stair-type cable tray and three categories of components such as bend-way cable tray, accessories, support post and used for supporting the cable line
3.2
energy conservation cable support system
cable support system which can save resource (steel) and electric energy efficiency
3.3
corrosion-resistant cable support system
cable support system with strong corrosion-resistant ability against surrounding medium through surface treatment of steel plate or being made of corrosion-resistant stainless steel material
Note: there are three corrosion-resistant modes, i.e. metal inorganic coating, organic coating and stainless steel material. Metal inorganic coating has high-efficient and long-lasting protection function and can resist ultraviolet and aging; it is applicable to chemical gas corrosion like indoor and outdoor moisture and salt mist resistance. Organic coating, with good chemical stability of molecule, corrosion resistance to acid and alkali corrosive medium but poor resistance to ultraviolet and aging, is mainly used for indoor environment rather than outdoor environment.
3.4
VCI double metal inorganic coating
inorganic coating with application of VCI (Volatile Corrosion Inhibitors) technology, lepidosome zinc powder and aluminum powder as filler, silicate as bonding agent and with electroconductive surface
3.5
organic coating
insulated coating formed by painting the organic coating on the surface of cable support system
3.6
hole cable tray
slot-shaped component composed of base plate and side edge with hole or made by one-piece steel plate through punching and bending
3.7
cable tray without hole
slot-shaped component composed of base plate and side edge or made by one-piece steel plate through bending
3.8
compounding cable tray
slot-shaped component that can be combined randomly in bolt or insertion mode
3.9
stair-type cable tray
rigid ladder-shaped component composed of side edge and several crosspieces
3.10
straight-way
a section of cable tray and stair-type cable tray with unchanged direction
3.11
equal radius straight-way
a section of straight-way with equal dimension
3.12
different radius straight-way
a section of straight-way with different dimensions
3.13
bend-way cable tray
a section of cable tray and stair-type cable tray with changed direction
3.14
horizontal bend-way cable tray
component changing the direction of cable tray and stair-type cable tray in the same horizontal plane
3.15
horizontal 3-way cable tray
component in the same horizontal plane, used to connect the cable tray and stair-type cable tray in three directions spaced by 90°
3.16
horizontal 4-way cable tray
component in the same horizontal plane, used to connect the cable tray and stair-type cable tray in four directions spaced by 90°
3.17
upper bend-way cable tray
component changing the direction of cable tray and stair-type cable tray from horizontal plane to the upward
3.18
down bend-way cable tray
component changing the direction of cable tray and stair-type cable tray from horizontal plane to the downward
3.19
vertical 3-way cable tray
component in the same vertical plane, used to connect the cable tray and stair-type cable tray in three directions spaced by 90°
3.20
vertical 4-way cable tray
component in the same vertical plane, used to connect the cable tray and stair-type cable tray in four directions spaced by 90°
3.21
bend-way radius
radius of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.22
fold-type bend-way cable tray
bend-way cable tray made of straight section by connecting two tangent points of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.23
arc-type bend-way cable tray
bend-way cable tray made of arc section of two tangent points of inscribed circle formed by two internal right angle sides of bend-way cable tray
3.24
accessories
component used for the connection and fixation necessary for continuous rigid structure system by connecting straight-way of cable tray or stair-type cable tray or connecting straight-way and bend-way cable tray or used for supplementing the straight-way and bend-way cable tray function
3.25
support post
component directly supporting cable tray or stair-type cable tray
3.26
support arm
rigid component with single fixed end and directly supporting cable tray and stair-type cable tray
3.27
uprightly post
component directly supporting support arm
3.28
suspender
rigid component suspending cable tray and stair-type cable tray
3.29
rated uniformly distributed load
the maximum safe uniformly distributed load borne by cable support system per meter within certain span
Contents of GB/T 23639-2017
Foreword i
Introduction iii
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
5 Requirements
6 Test Methods
7 Inspection Rules
8 Marking, Packaging, Transportation and Storage
Annex A (Informative) Material Conservation Rate Determination of Cable Support System
Annex B (Normative) Common Thickness of Plates for General Cable Support System
Annex C (Normative) Energy Conservation Rate Test of Cable Support System
Annex D (Normative) Load Test of Cable Support System (Manual Loading Method)
Annex E (Normative) Impact Test of Cable Support System
Annex F (Normative) Electrical Continuity Test of Cable Support System
References
