GB 12971.1-1991 Trolley and contact wires for electric traction—Part 1:General

GB 12971.2-1991 Trolley and contact wires for electric traction—Part 2:Copper trolley and contact wires GB 12971.3-1991 Trolley and contact wires for electric traction—Part 3:Aluminium and steel composite trolley and contact wires GB 12971.4-1991 Trolley and contact wires for electric traction Part 4:Aluminium-steel and aluminium alloy composite trolley and contact wires GB 12971.5-1991 Trolley and contact wires for electric traction—Part 5:Aluminium alloy trolley and contact wires

GB/T 12971.1-2008 Trolley and contact wires for electric traction—Part 1:Copper and copper-alloy contact wires GB/T 12971.2-2008 Trolley and contact wires for electric traction Part 2:Aluminium and steel composite trolley and contact wires

GB/T 3952-1998 Copper drawing stock for electrical purposes GB/T 3952-2008 Copper drawing stock for electrical purpose GB/T 3952-2016 Copper drawing stock for electrical purpose GB/T 3954-2001 Aluminium rod for electrical purpose GB/T 3954-2008 Aluminium and aluminium alloys rod for electrical purpose GB/T 3954-2014 Aluminium and aluminium alloys rod for electrical purpose GB/T 3954-2022 Aluminium and aluminium alloys rod for electrical purpose GB 4005 GB/T 4153-1993 Misch metal GB/T 4153-2008 Misch metal GB/T 4909.1-1985 Test methods for bare wires—General GB/T 4909.1-2009 Test methods for bare wires—Part 1:General GB/T 4909.2-1985 Test methods for bare wires—Measurement of dimensions GB/T 4909.2-2009 Test methods for bare wires—Part 2:Measurement of dimensions GB/T 4909.3-1985 Test methods for bare wires—Tensile test GB/T 4909.3-2009 Test methods for bare wires—Part 3:Tensile test GB/T 4909.4-1985 Test methods for bare wires—Torsion test GB/T 4909.4-2009 Test methods for bare wires—Part 4:Torsion test GB/T 4909.5-1985 Test methods for bare wires—Bend test—Reverse bend test GB/T 4909.5-2009 Test methods for bare wires—Part 5:Bend test—Reverse bend test GB/T 4909.6-1985 Test methods for bare wires—Bend test—Single bend test GB/T 4909.6-2009 Test methods for bare wires—Part 6:Bend test—Single bend test GB/T 4909.7-1985 Test methods for bare wires—Mandrel winding test GB/T 4909.7-2009 Test methods for bare wires—Part 7:Mandrel winding test GB/T 4909.8-1985 Test methods for bare wires—Hardness test—Brinell hardness test GB/T 4909.8-2009 Test methods for bare wires—Part 8:Hardness test—Brinell hardness test GB/T 4909.9-1985 Test methods for bare wires—Test for continuity of coating—Sodium polysulfide solution method GB/T 4909.9-2009 Test methods for bare wires—Part 9:Test for continuity of coating—Sodium polysulfide solution method GB/T 4909.10-1985 Test methods for bare wires—Test for continuity of coating—Ammonium persulphate solution method GB/T 4909.10-2009 Test methods for bare wires—Part 10:Test for continuity of coating—Ammonium persulphate solution method GB/T 4909.11-1985 Test methods for bare wires—Test for adherence of coating GB/T 4909.11-2009 Test methods for bare wires—Part 11:Test for adherence of coating GB/T 4909.12-1985 Test methods for bare wires—Solderability test of coating Solder globule method GB/T 4909.12-2009 Test methods for bare wires—Part 12:Solderability test of coating—Solder globule method GB 12971.2-1991 Trolley and contact wires for electric traction—Part 2:Copper trolley and contact wires GB/T 12971.2-2008 Trolley and contact wires for electric traction Part 2:Aluminium and steel composite trolley and contact wires GB/T 12971.2-2023 Trolley and contact wires for electric traction—Part 2:Aluminium and steel composite contact wires GB 12971.3-1991 Trolley and contact wires for electric traction—Part 3:Aluminium and steel composite trolley and contact wires GB 12971.4-1991 Trolley and contact wires for electric traction Part 4:Aluminium-steel and aluminium alloy composite trolley and contact wires GB 12971.5-1991 Trolley and contact wires for electric traction—Part 5:Aluminium alloy trolley and contact wires