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GB/T 38265.17-2022 Test methods for soft soldering fluxes—Part 17: Surface insulation resistance comb test and electrochemical migration test of flux residues $435.00 via email in 1~5 business day valid
GB/T 38265.2-2019 Test methods for soft soldering fluxes—Part 2:Determination of non-volatile matter—Ebulliometric method $150.00 via email in 1~3 business day valid
GB/T 38265.3-2022 Test methods for soft soldering fluxes—Part 3:Determination of acid value—Potentiometric and visual titration methods $150.00 via email in 1~3 business day valid
GB/T 38265.5-2021 Test methods for soft soldering fluxes―Part 5:Copper mirror test $165.00 via email in 1~3 business day valid
GB/T 38265.8-2022 Test methods for soft soldering fluxes―Part 8:Determination of zinc content $165.00 via email in 1~3 business day valid
GB/T 38265.9-2022 Test methods for soft soldering fluxes―Part 9:Determination of ammonia content $165.00 via email in 1~3 business day valid
GB/T 38365-2019 Technical procedure on smokeless production of copper phosphorus brazing filler metals $250.00 via email in 1~3 business day valid
GB/T 39081-2020 Test method of cross tension test for resistance spot and embossed projection welds $225.00 via email in 1~3 business day valid
GB/T 39082-2020 Test method of vickers hardness testing for resistance spot,projection and seam welds $165.00 via email in 1~3 business day valid
GB/T 39165-2020 Test method of peel and chisel for resistance spot and projection welds $225.00 via email in 1~3 business day valid
GB/T 39166-2020 Test method of mechanized peel for resistance spot, projection and seam welds $255.00 via email in 1~3 business day valid
GB/T 39167-2020 Test method of tensile shear for resistance spot and embossed projection welds $225.00 via email in 1~3 business day valid
GB/T 39255-2020 Gases and gas mixtures for welding and cutting processes $200.00 via email in 1~3 business day valid
GB/T 39279-2020 Wire electrodes,wires,rods and deposits for gas shielded arc welding of creep-resisting steels $255.00 via email in 1~3 business day valid
GB/T 39280-2020 Rods, wires and deposits for tungsten inert gas welding of non alloy and fine grain steels $255.00 via email in 1~3 business day valid
GB/T 39281-2020 Wire electrodes,wires,rods and deposits for gas shielded arc welding of high strength steels $255.00 via email in 1~3 business day valid
GB/T 39312-2020 Welding procedure qualification test for copper and its alloys $375.00 via email in 1~5 business day valid
GB/T 3965-2012 Determination of diffusible hydrogen in deposited metal $330.00 via email in 1~3 business day valid
GB/T 39789-2021 Non-destructive testing of welds—Eddy current-video integrated testing method of metal composites weld $170.00 via email in 1~3 business day valid
GB/T 40732-2021 Non-destructive testing of welds—Ultrasonic testing—Testing of welds in austenitic steels and nickel-based alloys $375.00 via email in 1~5 business day valid
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