Product News
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Inner surface warped of seamless steel pipe
Seamless steel pipe is machined from billet made. Small-scale steel plant, due to lack of processing capacity, not the purchase is processed into steel billets themselves, but purchase thick-walled steel, after cold drawn back to the factory several times, get a smaller size seamless annealed, th...Read more -
Introduction on Welded Steel Pipe Classes and Features
The welded steel pipe of low pressure fluid is also known as the clarinet. This kind of welded steel pipe can be used like the common welded steel pipe, for example, transporting water, gas and oil, but also it can be used to convey low pressure steam heating fluid. The wall thickness of this kin...Read more -
How to produce steel pipes
Steel is not only for the transmission fluid and powdered solids, heat exchange, manufacture of mechanical parts and containers, it is an economical steel. Building structure with a steel pipe manufacturing grid, pillars and mechanical support, can reduce weight and save 20 to 40% metal, and can ...Read more -
How to make hot rolled pipe ?
Hot rolled (extrusion seamless steel pipe): round tube → heating → perforation → → three-roll rolling, rolling or extrusion → detached → sizing (or reducing) → cooling → straightening hydraulic test (orflaw) → tag → storage. Rolling seamless tube of raw materials is a round tube, tube embryos...Read more -
Physical phenomena of spiral submerged arc welded pipe
Spiral submerged arc welded pipe widely used double submerged arc welding technology, the principle: Submerged arc welding is carried out by arc welding heat, and manual arc welding is different: submerged arc welding wire is bare, no paint above submerged arc flux is indeed to be welded in advan...Read more -
On-line testing of welded pipe
Welded pipe at the factory to go through rigorous testing to ensure compliance with the provisions of pipe quality standards and user requirements. Pipe inspection items generally include: factory inspection items have the appearance quality, straightness, dimensions, and other types of weld qual...Read more