Q235 Straight Seam Welded Pipe

General welded pipe is used to transport low-pressure fluid. Made of Q195A, Q215A, Q235A steel. It can also be made of other mild steel that is easy to weld. Steel pipes need to be subjected to water pressure, bending, flattening and other experiments, and there are certain requirements for surface quality. Usually the delivery length is 4-10m, and fixed-length (or double-length) delivery is often required. The specifications of welded pipes are expressed by the nominal diameter (mm or inches). The nominal diameter is different from the actual. Welded pipes are divided into two types: ordinary steel pipe and thickened steel pipe according to the specified wall thickness. The steel pipe is divided into two types with thread and without thread according to the pipe end form. 6-17 is the size of welded steel pipe.

The company has a perfect product quality testing system, including physical testing and chemical testing. The company adopts advanced testing equipment, including universal testing machine, hardness tester, spectroscopy equipment, metallurgical microscope, ultrasonic flaw detector, etc., to ensure that the products meet the required standards and specifications.

The company has obtained iso9001:2015 quality management system certification, iso14001:2015 environmental management system certification, ISO 45001:2018 occupational health and safety management system certification, PED 2014/68/EU Pressure Equipment Directive certification, DNV-GL material manufacturer certification, SGS product quality certification and other certificates and qualifications. We strictly implement GB/T 3639-2009, ASTM A519, DIN2391, JIS G3445 and other national and international standards to ensure the quality of our products.

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