This is MR.XU from Cangxing steel pipe & Pipe fitting Co., Ltd. It's my pleasure and honor to contact with you. First of all, I'd like to introduce our company briefly for better understanding with each other. In 2003, our company obtained the certificate of ISO9001 Quality System Authentification, and it started to control the quality in accordance with API 5L and API 5CT in 2004. Also we got the certificate of approval by the Lloyd’s Register . Our products mainly include： 1． seamless steel pipe 2． hot-finished pipe 3． stainless steel pipe 4． pipe fittings 5． Flange 6． supporting tubing if you have any inquiry,pls contact me ASAP. Thank you & best regards Contact:MR.XU xinde QQ：8415 69849