GB/T 41110-2021镍及镍合金药芯焊丝标准
英文:Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of nickel and nickel alloys GB/T 411...
英文:Tubular cored electrodes for gas shielded and non-gas shielded metal arc welding of nickel and nickel alloys GB/T 411...