Pipe coupling is a type of pipe connection made by forging round steel or steel ingots and machining them. It is mainly used in high-pressure precision pipeline systems in the fields of petrochemicals, power, aerospace, etc. Its connection forms include socket welding (SW) and threaded connection (TR), and the materials include carbon steel (such as Q235, 20 #, A105), stainless steel (such as 304, 316), and alloy steel (such as 15CrMo), with characteristics such as high pressure resistance and corrosion resistance. The product models range from DN6 to DN100, with pressure levels of 3000LB, 6000LB, and 9000LB. The manufacturing follows standards such as GB/T14383 and ANSI/ASME B16.11, and is widely used in municipal water supply and drainage, industrial water supply, and other scenarios.