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Home
About Us
About CREDIT
Enterprise Culture
Certificate
Why Choose CREDIT
Products
Galvanized Steel Pipe
Galvanized Round Pipe
Square Rectangular Tube
ERW Steel Pipe
ERW Round Steel Pipe
Square & Rectangular Steel Tube
SSAW Steel Pipe
Seamless Steel Pipe
LSAW Steel Pipe
Steel Coil / Plate
Cold Rolled Steel Coil / Sheet
Galvanized Steel Coil / Sheet
Prepainted Steel Coil / Sheet
Hot Rolled Steel Coil / Plate
Galvalume Steel Coil / Sheet
Scaffolding
Adjustable Steel Props
Frame Scaffolding
Quicklock Scaffolding
Ringlock Scaffolding
Steel Beam / Bar / Wire / Angle
Steel Wire
Steel Beam
Steel Bar
Steel Angle
Projects
R&D
Production Process
Manufacture
Inspection Center
News
Company News
Industry News
FAQ
Contact Us
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Visiting the African Market(Steel)
On September 15, 2019, Tianjin CREDIT Company organized company employees to visit customers and inspect the market in Africa.
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Production process of large diameter welded pipe
Large-diameter welded pipe is a spiral seam steel pipe, which is made of strip steel coil as raw material, often formed by warm extrusion, and welded by automatic double-wire and double-sided submerged arc welding process. The spiral steel pipe sends the strip steel into the welding pipe unit.
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Method of removing embroidery of straight seam steel pipe
Welded steel pipe is also known as welded pipe, is made of steel plate or strip after curling forming steel pipe. Welded steel pipe production process is simple, high production efficiency, variety of specifications, less equipment, but the general strength is lower than seamless steel pipe.
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Classification of welded steel pipes
According to the production method, the welded steel pipes can be divided into two categories: seamless steel pipes and welded steel pipes. 1. Seamless steel pipe can be divided into: hot rolled seamless pipe, cold drawn pipe, precision steel pipe, hot expanding pipe, cold spinning pipe and extrusion pipe, etc. Seamless steel tube with high qualit
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Production process of spiral pipe
(1) raw materials: strip coil, welding wire, flux. Rigorous physical and chemical examination must be carried out before investment. (2) the end of the strip shall be butt joint by single wire or double wire submerged arc welding. After the steel pipe is rolled, automatic submerged arc welding shall be adopted.
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