1.With beveled end and black antirust paint 2.API,CE,ISO certificate. 3.Reasonable design, novel structure, convenient operate Tee: Tee TypeEqual tee, reducing tee,lateral tee, BW/butt weld tee, TH/threaded tee, SW/socket weld tee, seamless teeStandardASME B16.9, ASME B16.11, ASME B16.5,ASME 16.28; JIS B2311,JIS B2312,JIS B2313,JIS B2316;MSS SP-43, MSS SP-95, MSS SP-75, MSS SP-79;ISO 3419,ISO ...