Carbon steel Tee corrosion resistance depends on chrome, but because chromium is one part of the three-way sales of carbon steel composition of the steel, so the protection methods vary. Buy Carbon Tee went to Hebei Qi co-management industry. When the amount of chromium reached 10.5%, Equal Tee atmospheric corrosion resistance significantly increased, but at higher chromium content, although still improve corrosion resistance, but not obvious. The reason is that with the chrome on steel alloyed steel tee time, change the type of surface oxides become similar to the surface of pure chromium oxide formed on the metal. This protects the surface chromium-rich oxide closely adhered to prevent further oxidation. This thin oxide layer, through which you can see the natural luster Tee surface, so that Tee has a unique surface. Moreover, if the surface is damaged, the exposed steel surface and atmospheric reaction would be self-repair re-formation of this oxide 'passivation film', continue to play a protective role. Hebei Chiho seamless tube industry is generally standard carbon steel tee tee sales, diameter and have Ⅰ series Ⅱ series, if the nominal size DN150x100, Ⅰ series outside diameter, wall thickness grade Sch20, made of 20 # concentric reducer fittings marked as DN150X100 Ⅰ-Sch20-20 R (C) GB / T12459. Butt tee by GB / T12459 identification, such as DN100X100X80. Seamless tee oil, chemical pipeline project is an important and a larger amount of pipe fittings, at present, most of the pipeline project with cast tee, Forged tees, tee welding tee and squeeze tee. Quality assurance is not easy because the seamless tee, during the installation process often requires a lot of welding work and thus directly affect the progress of large diameter carbon steel tee, and the defect is not easy to check seamless tee, often leak occurs after the project begins accident, so should not be used in the oil, chemical pipeline. Seamless tee larger size, in the processing of a lot of material to be cut, steel consumption and the process is more complicated, high processing costs. Steel tee manufacturers, Hebei Chiho (certified), carbon steel tee by Chiho Hebei Industry Co., Ltd. Hebei Chiho Pipe Co., Ltd. (www.hbqh628.com) (www.hbqh628.com) Hebei Cangzhou, forging leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer demand. Hebei Chiho leadership with the staff warmly welcome all inquiries negotiations to create the Hebei Chiho better future.