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Large-diameter straight seam steel pipes are widely used in natural gas, petroleum, chemical and other fields. Generally, they refer to straight seam

what is the difference between erw and saw pipes？

Longitudinal submerged arc welded steel pipes for oil pipeline engineering are generally manufactured by two processes, UOE and JCOE. Pipe end process

What is the difference between seamless pipe and erw pipe?

With the development of ERW steel pipe technology, its application fields continue to expand. ERW steel pipe uses the skin effect and proximity effect

Thermal expansion is a processing method for steel pipes. It is to process small-diameter steel pipes into large-diameter steel pipes with relatively

what is the difference between drill pipe and casing pipe

1. Low processing cost The cost of hot-dip galvanizing for rust prevention is lower than that of other paint coatings. 2. Durable In the suburban envi

what is the S355J0H? S355J0H is a low carbon steel material, which is a structural seamless steel pipe material under the European standard EN10219-1.

What is the BS EN 10219 standard?

1. Classified by production method (1) Seamless pipe -- hot rolled pipe, cold rolled pipe, cold drawn pipe, extrusion pipe, pipe jacking (2) Welding p

1. Fast heating speed and high production efficiency Because the energy is highly concentrated in the welding zone, the welded edge of the tube is hea