This standard specifies the model, requirements, test methods, inspection rules, marking, packaging, transportation and storage of steel cable support system products.
This standard is applicable to erect steel support system of 10kV below power cable and control cable while not applicable to the non-ferrous metal and non-metal support system.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending errors in the text), or revisions of, any of these publications do not apply. However, all parties coming to an agreement according to this standard are encouraged to study whether the latest edition of the normative document is applicable. For undated references, the latest edition of the normative document applies.
GB/T 191 Packaging - Pictorial Marking for Handling of Goods
GB/T 700-1988 Carbon Structural Steels
GB/T 715-1989 Hot-rolled Round Carbon Steel Bars for Standard Parts
GB/T 716-1983 Cold-rolled Plain Carbon Structural Steel Strips
GB/T 912-1989 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 1731 Determination of Flexibility of Films
GB/T 1732 Determination of Impact Resistance of Film
GB/T 1764 Methods of Test for Measurement of Dry Film Thickness of Paints
GB/T 1804-1992 General Tolerances - Tolerances for Linear Dimensions without Individual Tolerance Indications
GB/T 2423.4 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Db: Damp Heat, Cyclic
GB/T 2423.17 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Ka: Salt Mist
GB/T 2423.33 Basic Environmental Testing Procedures for Electric and Electronic Products - Test Kca: High Consistence Sulphur Dioxide Test
GB/T 4955 Metallic Coatings - Measurement of Coating Thickness - X-ray Spectrometric Methods - Coulometric Method by Anodic Dissolution
GB/T 4956 Non-magnetic Coatings on Magnetic Substrates - Measurement of Coating Thickness - Magnetic Method
GB/T 5117-1995 Carbon Steel Covered Electrodes
GB/T 5270-1985 Metallic Coatings on Metallic Substrates; Electrodeposited and Chemically Deposited Coatings; Review of Methods Available for Testing Adhesion
GB/T 9978-1988 Fire-resistance Tests - Elements of Building Construction
GB 50205-2001 Code for Acceptance of Construction Quality of Steel Structures
CECS 24:1990 Technical Code for Application of Fire Resistive Coating for Steel Structure
3 Definitions, Models and Sizes
3.1 Definitions
For the purposes of this standard, the following definitions apply.
3.1.1 Support system
The generic term of a continuous rigid structure system made of steel and composed of tray, straight segment of ladder system, bend-way, accessory, support and suspender; it is used to support the cable.
3.1.2 Ladder system
