Fluid transport stainless steel welded pipe, standard number GB / T12771-1991. Representative material for 0Cr13,0Cr19Ni9,00Cr19Ni11,00Cr17,0Cr18Ni11Nb, 0017Cr17Ni14Mo2 like. Mainly used for conveying low pressure corrosive media. Low pressure delivery spiral square tube (Ministry of Oil Standards)? Standard No. SY / T5037-2008. Representative material for Q235BQ345B and other steel materials. Mainly used for low-pressure delivery of water, Hunan pipe, oil and gas, square tube prices, heating and other pipelines. Rectangular Pipe, 304 square tube, square tube and a call rectangular pipe, that is, the side looks like a pipe. After treatment process is rolled strip made. The general is to strip after unpacking, smooth, curl, tube welding form, and then rolled into the square from the round tube and then cut into the required length. Also known as cold-formed square and rectangular hollow sections, square and rectangular tubes for short, code-named F and J. Stainless steel tube _ Mastery Steel Union (certification) _ Hunan square tube from the Tianjin Steel Trade Co., Ltd. Mastery. Mastery of Tianjin 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 demand. Mastery Steel Union leaders in the staff warmly welcome all inquiries negotiations to create accessible VAI better future.