SA213 T12 Seamless Boiler Tubes , Powder Coated Steel Pipe 345mm X 8.0mm

SA213 T12 Seamless Boiler Pipe, Alloy Steel, 345mm x 8.0mm, Cold Drawn, Coating Treatment.

Introduction
Alloy seamless steel pipe is a kind of seamless steel pipe, its performance is much higher than that of general seamless steel pipe, because this kind of steel pipe contains more Cr, its high temperature, low temperature and corrosion resistance performance is not compared with other seamless steel pipe, so alloy pipe is widely used in petroleum, chemical industry, electric power, boiler and other industries.

Alloy pipes have hollow sections and are used in large quantities to transport fluids, such as oil, natural gas, gas, water and certain solid materials. Compared with solid steel such as round steel, alloy steel pipe has light weight when bending and torsion strength is the same. Alloy steel pipe is an economical section steel, which is widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipe, automobile drive shaft, bicycle frame and steel scaffolding used in construction. Making ring parts with alloy steel pipe can improve the utilization ratio of materials, simplify the manufacturing process, save materials and processing hours, such as rolling bearing ring, Jack sleeve and so on. At present, steel pipe has been widely used to manufacture. Alloy steel pipe is also an indispensable material for all kinds of conventional weapons, barrel, barrel and so on must be made of steel pipe. Alloy steel pipe can be divided into circular pipe and special-shaped pipe according to the shape of cross-sectional area. Because the circular area is the largest under the condition of equal circumference, more fluid can be transported by circular pipe. In addition, the ring section under internal or external radial pressure, the force is more uniform, therefore, most of the steel pipe is a circular pipe.

Production process
Hot rolling (extruded seamless steel pipe): pipe billet → heating → perforation → three-roll oblique rolling, continuous rolling or extrusion → pipe → diameter (or diameter reduction) cooling pipe straightening → hydraulic test (or flaw detection) marking → storage.
cold drawn (rolled) seamless steel tube billet → heating → perforation → head → annealing → pickling → oiling (copper plating), multi-pass cold drawing (cold rolling)→ billet tube → heat treatment, straightening → water pressure test (flaw detection), marking → storage