The Out diameter(OD) 48mm welded pipes is made of steel plate or strip steel, which is divided into furnace welded pipe, electric welding (resistance welding) pipe and automatic arc welding pipe due to different welding technology.It can be divided into straight seam welded pipe and spiral welded pipe because of the different welding forms.Because its end shape is divided into circular and shaped welded pipe .

The Out diameter(OD) 48mm welded pipes can be divided into the following varieties due to their different materials and uses:

GB/T3091-2008 (The Out diameter(OD) 48mm welded pipes for low-pressure fluid transport) : mainly used for the transport of water, gas, air, oil, heating hot water or steam and other fluids of generally lower pressure and other purposes.Its representative material is Q235A grade steel.

GB/T14291-2006 (The Out diameter(OD) 48mm welded pipes for fluid transport in mines) : mainly used for straight seam welding steel pipes for pressurized wind, drainage and shaft gas discharge in mines.Its representative material Q235A, B grade steel.

GB/T12770-2002（The Out diameter(OD) 48mm stainless welded pipes for mechanical construction）mainly Used for machinery, automobile, bicycle, furniture, hotel and restaurant decoration and other mechanical parts and structural parts.Its representative materials are 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb, etc.

GB/T12771-1991(The Out diameter(OD) 48mm stainless welded pipes for fluid transport) : mainly used for conveying low-pressure corrosive medium.The representative materials are 0Cr13, 0Cr19Ni9, 00Cr19Ni11, 00Cr17, 0Cr18Ni11Nb, 0017Cr17Ni14Mo2, etc.

Jinjiang Changjiang Steel pipe Industry Co., LTD. Specializes in the production and sales of 48mm welded pipes fujian seamless pipe, Fujian spiral pipe and shelf pipe, welcome to inquire: 86-0595-82151777