Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, reasonable price and stock. Spiral steel pipe pile should be padded bottom, strong, smooth, spiral pipe to prevent moisture or material deformation; by the same kind of material were successively stacking storage; open dumps spiral steel pipe, the following must have wood or stone pad, pile surface slightly tilted, Shandong spiral to facilitate drainage, and pay attention to the material placed flat to prevent the causing bending. Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, q345b spiral, reasonable price and stock. Strength test pressure vessels: pressure vessels, in addition to sealing test, but also the strength test. There are two common pressure test and pressure test. They can be tested in working under pressure vessels and piping welds compactness. Pressure test is more sensitive than the hydrostatic test and speed, while after the test product without waste water treatment, drainage problems for the product is particularly applicable. But the risk is greater than the test pressure test. When tested, it must comply with the appropriate safety measures to prevent accidents during the test. Mastery of Tianjin Steel Trade Co., Ltd. specializes in the supply of various types of spiral pipe, pipe, seamless tube, reasonable price and stock. "Limited, unlimited service." Follow the historical tide, by the reform of Dongfeng, the company came into being, coil specifications, the company is intensive, large-scale, flexibility and systematic one, is the Tianjin metal pipe materials system large-scale circulation enterprises, variety kinds of specifications. As business development needs, the Company perennial with the major steel mills to establish a solid long-term business relationship. Mission: "credibility to survive, to compete with quality, in good faith for cooperation in order to benefit and development of spiral pipes | Tongda Steel Union (Online) | Shandong Tongda Steel Spiral provided by the Tianjin Trade Co., Ltd. Tianjin Mastery. Steel Trade Co., Ltd. (www.tjtdgl.com) (www.tdglgt.com) Shandong Liaocheng, steel leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs At around the steel joint leadership with the staff warmly welcome all inquiries negotiations to create accessible VAI better future.