Shandong Seamless Steel Tube Factory introduced thick-walled pipe related information for everyone. The thick-walled pipe is called a thick-walled steel pipe, and the pipe diameter and wall thickness are less than 20, which is called a thick-walled steel pipe. Mainly used for oil drilling pipes, boiler tubes, petroleum cracking tubes, bearing tubes, automobiles, tractors, aviation high-precision structural tubes.
Thick-wall pipe manufacturing and processing (supplied by Shandong seamless steel pipe plant):
Extrusion seamless steel tube: round blank, heated, perforated, three-roller oblique rolling, rolling or extrusion, tube, sizing (or reduction) → → → cold straightening hydraulic test (or inspection), marking, storage.
Cold-drawn seamless steel tubes (rolling): round blanks, heated and perforated. “→→→ annealing pickling oil (copper), multi-pass cold (cold), billet, heat treatment, alignment, stress test (test), identification, storage.
Thick-walled seamless steel pipe weight calculation formula: [(outer-wall thickness) * wall thickness] * = 0.02466 kg/m (weight per meter).
The source of thick-walled pipe knowledge
Silkscreen Printing Tempered Glass
Tempered Glass,Laminated Glass ,Tempered Glass Windows ,Tempered Glass Sheets
Tempered Glass Co., Ltd. , http://www.nbglasses.com