GB/T 31235-2014
Technical specification for fittings of ± 800 kV DC overhead transmission line (English Version)

Standard No.

GB/T 31235-2014

Language

Chinese, Available in English version

Release Date

2014

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 31235-2014

Scope

This standard specifies the general technical requirements, design and manufacture, connection and fastening, inspection and testing, marking and packaging, etc. of supporting hardware for ±800 kV DC overhead transmission lines. This standard applies to supporting fittings for conductors of ±800 kV DC overhead transmission lines.

GB/T 31235-2014 Referenced Document

• DL/T 284 Hot-dip galvanized bolts and nuts for transmission line towers and power fittings
• DL/T 373 Technical conditions of conductive paste
• DL/T 683 Nomenclature for fitting model
• DL/T 760.3 Grading ring, shielding ring, grading and shielding ring
• DL/T 763 Specifications for pre-twisted fittings for overhead lines
• DL/T 764.1 Electric power fitting fasteners Hexagon head bolts bolts with split pin hole on shank
• DL/T 764.2 Electric power fitting fasteners Split pin
• DL/T 768.2 Manufacturing quality of electrical fittings - Part 2: Forgings of ferrous metals*， 2017-08-02 Update
• DL/T 768.3 Manufacturing quality of electric power fittings part 3: Stamping parts*， 2017-08-02 Update
• GB 93 Standard Spring Washers
• GB/T 1173 Casting aluminum alloy
• GB/T 1804 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
• GB/T 2314-2008 General technical requirements for electric power fittings
• GB/T 2315 Specified failure load series and coupling dimensions for electric power fittings*， 2017-12-29 Update
• GB/T 2317.1 Test method for electric power fittings.Part 1: Mechanical tests
• GB/T 2317.2 Test methods for electrical fittings - Part 2: Corona and radio disturbance tests
• GB/T 2317.3 Test method for electric power fittings.Part 3:Heat cycle tests for electric power fittings
• GB/T 2317.4 Test methods for electrical fittings - Part 4: Rules for acceptance*， 2023-03-17 Update
• GB/T 41 Hexagon nuts,style 1.Product grade C*， 2016-02-24 Update
• GB/T 4437.1 Aluminum and aluminum alloy hot extruded tubes Part 1: Seamless round tubes*， 2023-11-27 Update
• GB/T 5780 Hexagon head bolts.Product grade C*， 2016-02-24 Update
• GB/T 699 Quality carbon structure steels*， 2015-12-10 Update
• GB/T 700 Carbon structural steels
• GB/T 8162 Seamless steel tubes for structural purposes*， 2018-05-14 Update
• GB/T 95 Plain washers--Product grade C

GB/T 31235-2014 history

• 2014 GB/T 31235-2014 Technical specification for fittings of ± 800 kV DC overhead transmission line