Characteristics of carbon steel tee and butt welded tee

　　Butt welded tee is a steel elbow formed by hot pressing or forging. Its connection form is to directly butt weld the tee with the steel pipe. The main manufacturing standards of butt welded tee are generally GB / t12459, GB / T13401, ASME b16.9, sh3408, sh3409, Hg / t21635, Hg / t21631 and SY / t0510.

　　Butt welding tees generally include equal diameter tees, reducing tees, etc., and the materials are carbon steel, alloy steel and stainless steel.

　　When the chromium content in the steel reaches about 1.2%, the chromium reacts with the oxygen in the corrosive medium to form a thin oxide film (self passivation film) on the steel surface. The seamless tee can prevent the further corrosion of the steel matrix. In addition to chromium, the commonly used alloy elements include nickel, molybdenum, titanium, niobium, copper, nitrogen, etc, In order to meet the requirements for the structure and performance of concentric reducers for various purposes. Certain production and processing processes are adopted in the production of carbon steel tee to ensure good function and performance in production and processing.