Welding process of stainless steel plate

　　The billet used in the welding process of stainless steel plate is steel plate or strip steel, which can be divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc welded pipe due to different welding processes. Due to their different welding forms, they are divided into two types: straight seam welded pipes and spiral welded pipes. Due to its end shape, it can be divided into circular welded pipes and irregular (square, flat, etc.) welded pipes. Welded pipes are divided into several types due to their different materials and uses: GB/T3091-1993 (Galvanized Welded Steel Pipe for Low Pressure Fluid Transportation). Mainly used for conveying low pressure fluids such as water, gas, air, oil, and heating hot water or steam, and for other purposes. Its representative material is Q235A grade steel. GB/T3092-1993 (Galvanized Welded Steel Pipe for Low Pressure Fluid Transportation). Mainly used for conveying low pressure fluids such as water, gas, air, oil, and heating hot water or steam, and for other purposes. Its representative material is Q235A grade steel. GB/T14291-1992 (Welded Steel Pipe for Mining Fluid Transportation). Mainly used for straight seam welded steel pipes for mine ventilation, drainage, and shaft gas discharge. Its representative material is Q235A and B grade steel. GB/T14980-1994 (Large diameter welded steel pipes for low-pressure fluid transportation). Mainly used for conveying low-pressure fluids such as water, sewage, gas, air, heating steam, and other purposes. Its representative material is Q235A grade steel. GB/T12770-1991 (Stainless steel welded steel pipes for mechanical structures). Mainly used for machinery, cars, bicycles, furniture, hotel and restaurant decoration, and other mechanical components and structural components. Its representative materials include 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc. GB/T12771-1991 (Stainless steel welded steel pipes for fluid transportation). Mainly used for transporting low-pressure corrosive media. The representative materials are 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc.