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Large steel pipe welding
In the large diameter pipe welding process, the workpiece and form a molten solder is melted region, the connection between the material cooled and solidified after the formation of the pool. Large diameter thick-walled tube usually need to apply pressure in welding process. Welding energy source...Read more -
Influencing factors of bright annealing stainless steel pipe
Annealed stainless steel tube brightness determines the quality of the product. Too many factors, listed five important factors for reference. 1, The annealing temperature reaches a predetermined temperature. Stainless steel heat treatment is generally taken to solution heat treatment, that is, p...Read more -
Galvanized steel pipe anti-corrosion requirements
The usage of galvanized steel pipe is getting high, then the requirements of galvanized pipe is more, it was proposed the galvanized pipe completely different resistance to rust (rot) eclipse, which is platedzinc tubes manufacturers challenges, galvanized pipe has what the world demands. Galvaniz...Read more -
ERW pipe weld joint heat treatment process online
The most important feature of erw steel pipe is no foreign filler metal, heating speed, high production efficiency, which is an advantage, but also its shortcomings, which is no filler metal, the filler alloy will not benefit approach to improve the weld properties element; heating temperature is...Read more -
Difference Between ERW, SSAW, LSAW
Seamless steel pipes are mainly used in oil pipeline and gas pipeline, but seldom used in oil pipelines with long-distance. Most long distance pipeline applied ERW pipes, SSAW pipes and LSAW pipes. Here are comparisons of technological features and performance of these pipes. 1. Electric Resistan...Read more -
Heat treatment process for steel pipe
The quality of heat treatment is directly related to subsequent processing quality and eventually affect the performance and life of the parts, heat treatment is the energy consumption of the machinery industry big polluters. In recent years, with the advancement of science and technology and its...Read more -
Introduction to boiler tube
Boiler tubes is a one of seamless pipe. Manufacturing methods is the same as seamless tube, but it has the stringent requirements for manufacture of steel pipes. According to the temperature level,boiler tube is divided into general boiler tubes and high pressure boiler tube. Production methods: ...Read more -
Big Differences between ERW Steel Pipe and Seamless Pipe
Nowadays, with quick construction of society and rapid development of technology, more and more different kinds of steel pipes are created, such as welded steel pipe, seamless steel pipe, ERW steel pipe and so on, and more and more steel pipes are needed. In the competitive market of steel pipe,...Read more -
Analysis of welded pipe pressure burst
Delivery with steel pipes have been more and more widely used in various industries, and steel pipe multi-buried in damp underground, which has strict requirements for the use of performance of the steel pipe. Existing heat transmission with welded pipe leak in use, check the steel pipe partial s...Read more -
Eddy current testing(ET)
Eddy current testing(ET) use the principle of electromagnetic induction to detect a flaw detection method of the conductive member surface and near-surface defects. Its principle is based on the excitation coil so that the conductive member generates eddy currents, by means of determination of th...Read more -
Difference of ERW and UOE
1： The difference between raw material and production capacity Raw material of ERW steel pipe is hot rolled steel coils, and raw material of UOE pipe is hot rolled steel plate. So the ERW steel tube can realize continuous assembly line work, high production efficiency, production cost is low; A...Read more -
Heat boiler seamless extrusion technology
Hot extrusion is generally carried out for boiler seamless pipe billet, called a composite extrusion. Composite extrusion is currently the best method for producing stainless steel and high nickel alloy seamless tube boilers. It is a large-diameter composite consisting of two or more metal blank ...Read more