Tianjin Zhongshun Petroleum Steel Pipe Co., Ltd is specialized in producing high-tech ERW (Electric Resistance Welded) and SSAW (Spiral Submerged Arc welded) pipes. Our company has advanced 457.2mm high-frequency straight seam resistance welding machine, and 3048mm spiral submerged arc welded machine. on-line ultrasonic testing device, off-line ultrasonic testing device, plain ends and beveling ends machine, hydraulic pressure testing machine as well as necessary mechanics testing, physical and...
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