Our company has reached the requirements of the American Petroleum Institute API QMS, API 6H certificate and ISO9001 quality system authentication, and enjoys the qualification for independent import and ***** products are produced in accordance with American standard, ASTM, ANSI, German Standard, DIN, Japanese standard, JIS. We could also produce different wall thickness products according to customers' request. The motto of the company is making high quality products to win the customers both at from home and abroad and establishing honesty and credit ability to welcome friends all over the world. Please feel free to contact us for further information.
