Seamless steel pipes generally are composed of Structure seamless steel pipe, Seamless steel pipe for fluid, low & middle press boiler pipe, Construction attachment with the seamless steel pipe, Alloy tube and Bearing seamless steel pipe. They are wildly applied in boiler industry, construction, and so on. Specification: Aluminum: 10# - 45# Application: General engineering structure, and Machinery construction structure, ect.Meanwhile it serves as the cold rolling precision steel pipe semi-finished materials. Standard: GB/T8162-99 Specification: Diameter 6-80MM Wall Thickness: 0.8-12MM