We, YINGKOU GUANGMING PIPE FITTINGS CO., LTD approved by ISO9001:2000&ISO14001&OHSAS18001:1999. Our main products include butt welding and threaded fittings, forged flanges and other relative accessories. These are made according to ASME/ANSI, MSS, DIN, JIS, GB, SH, SY, HG, and DL.