If clients have special requirements on specification or material, our company can set rolling and ensure supplying. 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. Our company can not only produce GB, international standard pipes, but also various of nonstandard series as per clients' requirements to develop and produce, especially for some high technology, difficultly-produced products with light, thin or sophisticated section form. Welcome relative enterprises to use them widely. The products of our company's has been exported to more than 30 countries and highly praised.