14. Drawn or cold rolled precision seamless steel pipe (GB3639-2000) is used for mechanical structure, hydraulic equipment, high dimensional accuracy and surface finish of a good cold-drawn or cold rolled precision seamless steel tubes.
Use precision seamless steel pipe manufacturing equipment, mechanical or hydraulic structure can be significant savings in machining time while improving material utilization, and help to improve product quality.

15. Stainless steel seamless tubes (GB/T14975-2002) is widely used in chemical, petroleum, textile, medical, food, machinery and other industries, corrosion-resistant pipe and structural parts and components made of hot rolled stainless steel ( extrusion, expansion) and cold drawn (rolled) seamless.