2. Seamless Stainless Steel Pipe for Fluid Transportation (GB/T8 163- 1999) is a common seamless pipe for conveying fluids such as water, oil and gas.
3. Seamless Stainless Steel Pipe for Medium and Low Pressure Boilers (GB3087- 1999) is a hot-rolled and cold-drawn (rolled) seamless steel pipe made of high-quality carbon structural steel, which is used to manufacture superheated steam pipes, boiling water pipes, superheated steam pipes, large smoke pipes, small smoke pipes and arch brick pipes of various structures of medium and low pressure boilers.
4. Seamless Stainless Steel Pipe for High-pressure Boiler (GB53 10- 1995) is a kind of high-quality carbon steel, alloy steel and stainless heat-resistant steel seamless steel pipe used to manufacture the heating surface of high-pressure and above water-tube boilers.
5. The high-pressure stainless steel seamless steel pipe for fertilizer equipment (GB6479-2000) is a kind of high-quality carbon structural steel and alloy steel seamless steel pipe suitable for chemical equipment and pipelines with working temperature of -40~400℃ and working pressure of 10~30Ma.
6. Seamless Stainless Steel Pipe for Petroleum Cracking (GB9948-88) is a seamless steel pipe for furnace tubes, heat exchangers and pipelines in refineries.
7. The steel pipe for geological drilling (YB235-70) is the steel pipe used for core drilling by the geological department, which can be divided into drill pipe, drill collar, core pipe, casing pipe and settling pipe according to the purpose.
8. Seamless Stainless Steel Pipe for Diamond Core Drilling (GB3423-82) is a seamless steel pipe for drill pipes, mandrels and casings for diamond core drilling.
9. Oil drilling pipe (YB528-65) is a kind of stainless steel seamless pipe with both ends thickened inside or outside, which is used for oil drilling. There are two kinds of steel pipes: turning wire and non-turning wire. The turning wire is connected with the joint, and the non-turning wire is connected with the tool joint by butt welding.