Product News
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Difference between hot rolled and cold formed steel
Hot rolled steel Hot-rolled is with continuous casting slab or blooming slab as raw material, after reheating furnace heating, high pressure water descaling into roughing mill, roughing material by the cutting head, tail, and then enter the finishing mill, the implementation of a computer-control...Read more -
Black ERW steel pipe
Black ERW steel pipe ERW steel pipe with bevelled ends & plastic caps Hunan Great Steel Pipe Co.,Ltd can provide you with Electric Resistance Welded (ERW) Pipe suitable for your project needs. ERW pipe cold formed from a ribbon of steel pulled through a series of rollers and formed into a tub...Read more -
API 5L
Generally speaking, API 5L refers to API 5L line pipe,which is out of the ground the oil, gas, water, transported by pipeline to pipe oil and gas industry companies. according to the manufacture process and the tube bloom used different shapes, api 5l can be divided into api 5l seamless steel pip...Read more -
Do you Know the History of Scaffolding ?
Antiquity Sockets in the walls around the paleolithic cave paintings at Lascaux, suggest that a scaffold system was used for painting the ceiling, over 17,000 years ago. The Berlin Foundry Cup depicts scaffolding in ancient Greece (early 5th century BC). Egyptians, Nubians and Chinese are also re...Read more -
Difference between black steel pipe and carbon steel pipe
In general, black steel pipe and carbon steel pipe have about the same procedures for welding. That is if you are talking about general welding and not for some specific application like very cold temperatures. Black steel pipe is not really a specification but rather a generic term used primaril...Read more -
Cold drawn precision pipe welding quality problems and solutions
1. Cold drawn precision tubes Weld Butt Weld occur during welding, the main welding jig is not enough stroke and docking jig when two conditions caused by too fast. a, butt welding jig stroke enough. Cold drawn precision pipe connections before and after docking with the milling cutter mark trial...Read more