GB/T 23639-2017Energy conservation and corrosion-resistant steel-made cable support system (English PDF)

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009.

This standard instead of GB/T 23639-2009 "energy-saving corrosion-resistant steel cable bridge", compared with GB/T 23639-2009, the main technical The changes are as follows.

--- cited the hot-dip galvanized steel and steel, stainless steel plate and strip, shell protection grade standard;

--- Terms and definitions Modified corrosion-resistant bridge, increased VCI bimetallic inorganic coating and organic coating;

--- increase the contents of stainless steel cable tray;

--- Model added anti-corrosion classification;

--- increased the requirements of the cover structure;

--- increased protection level requirements;

--- modified the definition of energy efficiency and energy efficiency indicators;

--- increase the anti-corrosion layer local minimum thickness requirements;

- the addition of anti-corrosion layer for the determination of metal inorganic coating and organic coating;

--- Removed the mechanical loading method test method;

--- modified the Appendix C bridge energy efficiency test;

- Added test load of 3.5m to 6.0m span in Appendix D Bridge load test.

Introduction

In response to global climate change, reduce carbon emissions, and strive to build a resource-saving and environment-friendly society, vigorously promote energy-saving and corrosion-resistant steel Cable tray technology and product promotion and application to speed up the upgrading of products in the product selection of hot-dip galvanized steel and stainless steel plate Materials, according to the recent engineering practice, revised "energy-saving corrosion-resistant steel cable bridge" standard.

The energy-saving and corrosion-resistant steel cable tray provided in this standard explains the concept of energy saving and corrosion resistance of the bridge, mainly reflecting energy saving and resistance Corrosion of technical standards characteristics, through technological innovation, so that resources and energy are optimized to use, so that products from the use of materials, manufacturing to engineering The application of the whole life cycle are in line with energy-saving environmental protection, low-carbon emissions requirements; energy-saving corrosion-resistant steel cable bridge through the use of convex corrugated Technology to increase the strength of the bridge, reduce material consumption, while increasing the area of heat, make full use of heat conduction and heat exchange technology to improve the bridge The cable within the cable to run the temperature environment, reducing the loss of the line to achieve the purpose of energy-saving emission reduction; product selection hot-dip galvanized steel sheet material or Stainless steel, especially hot-dip galvanized steel, uses a vapor-based corrosion inhibitor (VCI) inorganic coating or an organic coating for surface corrosion protection Improve the anti-corrosion performance under the premise of the process to reduce the pollutant emissions, so that products with low-carbon environmental protection and corrosion resistance characteristics.

1 Scope

This standard specifies the terminology and definition, classification, requirements, test methods, inspection of energy-saving and corrosion-resistant steel cable trays (hereinafter referred to as bridge) Rules, signs, packaging, transportation and storage.

This standard applies to industrial and civil construction of cable for energy-saving corrosion-resistant steel cable bridge.

2 Normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this document. For undated references, the latest edition (including all modifications) applies to this document.

GB/T 700 carbon structural steel

GB/T 912 carbon structural steel and low alloy structural steel hot rolled steel sheet and strip

Determination of adhesion of paint film GB/T 1720-1979

GB/T 1804-2000 General tolerances Tolerances of linear and angular dimensions without tolerances

GB/T 2518 continuous hot - dip galvanized steel sheet and strip

GB/T 2828.1 Sampling inspection procedures Part 1: Batch inspection sampling plan for retrieval by quality limit (AQL)

GB/T 3280 stainless steel cold rolled steel sheet and strip

GB/T 4208-2008 enclosure protection class (IP code)

GB/T 4237 stainless steel hot rolled steel sheet and strip

GB/T 4956 Magnetic properties of non - magnetic coatings on magnetic substrates

Paints and varnishes - Determination of resistance to liquid media GB/T 9274-1988

GB/T 10125 artificial atmosphere corrosion test salt spray test

GB/T 11253 Carbon structural steel Cold rolled steel sheet and strip

Cable management cable tray systems and cable ladder systems

3 Terms and definitions

The following terms and definitions apply to this document.