Manufacturing Process

November 19, 2018

seamless steel tube,seamless steel pipe

The seamless steel tube is rolled by a solid tube blank after perforation. 1. Manufacturing method According to different production methods, it can be divided into hot rolled pipe, cold rolled pipe, cold drawn pipe and extruded pipe. 1.1. Hot-rolled seamless pipes are generally produced on automatic rolling mills. The solid tube blank is inspected and the surface defects are removed, cut into the required length, centered on the end face of the perforated end of the tube blank, then sent to a heating furnace for heating and perforated on the punching machine. At the same time, the perforation is […]
May 23, 2018
insulation steel pipe

Steel Pipe With Heat Insulation | polyurethane thermal insulation steel pipe

Insulation steel pipes are widely used in liquid and gas transmission pipe networks, chemical pipe insulation projects in petroleum, chemical, central heating and heating networks, central air-conditioning ventilation pipes, and municipal engineering. High-temperature prefabricated direct-buried thermal Insulation steel pipe is a direct-buried prefabricated thermal Insulation steel pipe with good thermal insulation performance, safety and reliability, and low construction cost. Specification 1.The pre-insulated steel pipe coated with high density polyurethane foam can resistant the temperature up to 140°c. 2.With the corrosion resistant hdpe jacket pipe can make the pipe directly buried underground without trench. 3.Different size pipe and pipe fittings can […]
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”). ERW AND SPRAL STEEL PIPE Definition 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 […]
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