... , TH/threaded tee, SW/socket weld tee, seamless teeStandardASME B16.9, ASME B16.11, ASME B16 ... SH 3408, SH3410Size1/2''-48''(Butt-welding and seamless);1/8''-4''(Threaded and socket-welding);16 ... , WPHY 60, WPHY 52,WPHY 46,WPHY 42,API 5L GRB, X60, X65, X42,X52,ASTM A403 WP304 ... API,CERTIFICATED MANUFACTURER tee for pipe fitting, pipe fittings. The mainly are used to branch pipe place of the mainpipe line, ...