Manufacturing Process

January 21, 2018

ERW ,Spiral weld Pipe Definition and Manufacturing Process

Spiral steel pipe& Welded Pipe Manufacturing Process Spiral steel pipe & Welded Pipe is the primary manufacturing process for steel thicknesses that exceed spiral mill capabilities (greater than 1”). Electric resistance weld (ERW) pipe Definition :  is normally produced in sizes from 2-³∕₈” OD thru 24” OD.ERW is produced from individual sheets or continuously from rolls of skelp. There are two important differences in the production of ERW pipe versus CW pipe. ERW pipe is cold formed into a cylindrical shape rather than hot formed. An electric current rather than a flame is used to heat the edges of the […]
February 27, 2017

process of ERW steel pipe

process of ERW steel pipe  
February 27, 2017

process of SSAW Steel Pipe

process of SSAW Steel Pipe
February 27, 2017

process of LSAW Steel Pipe

Internal weld The device is controlled by microcomputer, which can automatically identify the flaw in the steel plate, give alarm, locate and mark according to the set standard of flaw detect and inspection; besides, it can comprehensively evaluate the inspection result, determine the flaw grade and print the inspection report forms as well. It has the characteristics such as easy operation and high inspection efficiency. External weld The device is controlled by microcomputer, which can automatically identify the flaw in the steel plate, give alarm, locate and mark according to the set standard of flaw detect and inspection; besides, it […]
February 27, 2017

process of Coated Steel Pipe

process of Coated Steel Pipe
February 27, 2017

process of OTCG tube

February 27, 2017

process of carbon steel pipe

process of carbon steel pipe
February 27, 2017

process of seamless steel pipe

Hot Rolled Process for Seamless Steel Pipe Cold Drawn Process for Seamless Steel Pipe The process of cold drawing is a procedure by which steel profiles are formed in order to achieve complex cross sections of excellent precision in these cold drawn steel shapes. After careful pre-treatment and de-scaling, the special profile bars are drawn through a forming die. This operation can be repeated up to three or four times. Cold drawing of hot rolled and hot extruded special pre-shape steel profiles tightens the cross-sectional tolerances, thus leading to significant improvement in dimensional accuracy and surface quality. Cold drawn steel special […]