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Credibility ,Spiral steel pipe's type is made by strip, seamless steel pipe type is made by round steel, difference is very big, production process different:
Spiral steel pipe is to use strip steel welding, can see the weld;
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.