This PT Coupling Schedule 10 pipe series stainless steel butt weld cam and groove DWB-type hose coupler is welded to another fitting using a butt weld. DWB-type connections have a coupler at one end and a butt weld connection at the other for welding to Schedule 10 pipe. It's made of 316 stainless steel for greater resistance to corrosion, including chloride corrosion, than 304 stainless steel and can be used with salt water, waste water, hydraulic oil, coolants, and many chemicals. This cam and groove hose fitting is suitable for joining hoses and pipes together in a variety of applications in the construction, mining, agriculture, manufacturing, automotive, and petroleum industries, among others.Hose fittings connect, control, change the direction of, and terminate the flow in piping and hose systems. They are made of brass, stainless steel, galvanized steel, and other materials that resist corrosion, pressure, and wear. Hose fittings have various types of connections, including threaded, barbed, push-to-connect, dry disconnect, and others including those based on internationally-accepted specifications. Hose fittings are used in systems such as air compressors, automatic manufacturing operations, aircraft controls, and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.PT Coupling manufactures pneumatic and hydraulic hose fittings for industrial and automotive applications. The company, founded in 1951 and headquartered in Enid, OK, meets International Organization for Standardization (ISO) standard 9001.