Kinds of pipes:

1 Straight-seam pipe, spiral welded pipe:

Welding method: electric arc weld, ERW (high frequency, low frequency), gas-welding, continuous furnace welding.

1.1 Longitudinal electric resistance welded steel tubes: material: 08F, 08, 10F, 10, 15F, 15, 20, Q195, Q215A, Q215B, Q235, Q235B. Specification: OD.5-508, WT. 0.5-13.0.

1.2 Welded stainless steel pipes for liquid delivery: material: 1Cr18Ni9,0Cr18Ni9(304),00Cr18Ni10(304L),0Cr25Ni20(310S),0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L),0Cr18Ni10Ti(321). The ones in the brackets are that of American standard. Specification: OD.8-630, WT. 0.3-16.

1.3 Stainless welded pipe for mechanical structure: material: 1Cr18Ni9, 0Cr18Ni9 (304), 00Cr18Ni10 (304L), 0Cr18Ni10Ti (321). The ones in the brackets are that of American standard. Specification: OD.8-630, WT. 0.3-16.

1.4 Welded pipe for low-pressure fluid delivery: material Q215A, Q215B, Q235A, Q235B, Q295A, Q295B, Q345A, Q345B. Specification: OD: 77.8-1626, WT.4-25.

2 Seamless pipe

2.1 Stainless steel seamless pipe for fluid delivery: material 1Cr18Ni9,0Cr18Ni9(304),00Cr18Ni10(304L),0Cr25Ni20(310S),0Cr17Ni12Mo2(316),00Cr17Ni14Mo2(316L),0Cr18Ni10Ti(321). The ones in the brackets are that of American standard. Specification: OD. 6-426, WT. 0.25-65.

2.2 Seamless pipe for low temperature pipeline: material: 16MnDG, 10MnDG, 09DG, 09Mn2VDG, 06NiMoDG. Specification: OD.6-426, WT. 0.25-30.

2.3 Cold draw seamless square tube, rectangular tube, shaped tube: material 10, 20, 35, 45, Q195, Q215, Q235, Q295, Q345, Q390, Specification: size: 10-400, WT. 0.8-2.5.