structure pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painte Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion...

structure pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painte Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion...

structure pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painte Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion...

structure pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painte Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion...

Gas pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painted Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion by...

Gas pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painted Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion by...

Gas pipe 1.Outer diameters:21-219mm 2.Wall thickness:1-22mm 3.Material: 10#/20#/45# 4.Surface: Oiled or black painted Our products has been widly used  in petroleum, chemical industry, mechnical industry, vessel,boiler and electric power and so on, it win opinion by...