News
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Cold galvanized(galvanizing)
Cold galvanized(galvanizing) also called electro-galvanized cold galvanizing, which is the use of the pipe member through electrolysis degreasing, pickling, and put into a solution composed of zinc and a cathode connected to the electrolytic apparatus, placed opposite the tube member zinc plate, ...Read more -
Coiling temperature for hot rolled strip
Coiling temperature change can make the hot rolled strip steel recrystallization grain size, the quantity of deposition and morphology changes, making it change mechanical properties. Finish rolling temperature must, raise the coiling temperature, causes recrystallized grains becomes large, the m...Read more -
Advantages of Submerged Arc Welding Spiral Steel Pipe
In the spiral pipe production process and the use, there are invented a lot of excellent welding and methods of production, greatly contributed to the steady and rapid development of the industry, but also makes this industry has been optimized in development. Which submerged arc welding is a wel...Read more -
Flexible composite high-pressure delivery pipe
Flexible composite high-pressure delivery pipe is a composite material made of a polymer with a certain high strength, high pressure, corrosion, fouling resistance, friction coefficient, good insulation, good flexibility and long life of a petroleum gas industrial pipe. Flexible composite high-...Read more -
Characteristics of resistance welding steel pipes（ERW steel pipe)
ERW (Electric Resistance Welding) steel pipe is referred to as ERW pipe or HF welded pipe, it has many advantages as following: 1) high production efficiency, low cost, its price is about the the UOE straight seam submerged arc welded steel, 85%; 2) high dimensional accuracy, its roundness (Round...Read more -
Carbon seamless steel pipe process
How the seamless steel pipe is being made? Seamless steel pipes are made by heating solid ingot and pushing a piercing rod to form a hollow tube. Finishing of seamless steel could be done through techniques such as hot rolled, cold drawn, turned, roto-rolled etc. After going through the finishing...Read more