We, at S.T.ENG.Co.,Ltd. in Korea, are one of the most well known pipe-line item manufacturers and trading companies world-wide. We have provided high quality Flanges and Fittings in the important industrial fields such as Oil & Gas, Chemical, Petrochemical, Power generation, On-shore & Off shore platform, and shipbuilding for over 20 years. Since 1996, we have opened our own company named S.T.ENGINEERING to specialize in Flange and Fittings. We changed company name S.T.ENG.Co.,Ltd. in 2010. S.T.ENG.Co.,Ltd. is specialized in pipe-line products including Flanges and Fittings. All of our products are manufactured in modern facilities under strict quality control systems. With the great of export experience and good relationship with our client, we guarantee of the quality of our products. We are certified under ISO 9001:2015, ISO 14001:2015, OHSAS 18001:2007, API 6A. Also, all of our products are compliance with the requirements of ANSI/ASME, API, JIS, AWWA, DIN, BS and special requests. We got vendor approvals from KOC, ADCO, GASCO, TAKREER, NIOC, NIGC, Petronas, Pertamina Persero, MMHE, CPECC, Worley Parsons, Hu-Chems, Labuan Shipyard.