... 42,API 5L GRB, X60, X65, X42,X52,ASTM A403 WP304, A403 WP304L, A403 WP316, A403 WP316L, A403 WP321ASTM A182 F 304, 304L,316, 316L,904LASTM A234 ... tee for pipe fitting, pipe fittings. The mainly are used to branch pipe place of the mainpipe line,it divided into reducing tee ... tee: branch pipe's diameter less then the that of main pipe.1.According to the connection type: can be divided into butt ...