HIGHT QUALITY FOR OCTG 13-3/8″ L80 BC API 5CT CASING COUPLING

We have stable raw materials and logistics suppliers,they are all leading enterprises in china.Also our professional engineers and skilled workers to keep the high quality.We were awarded as”CHINA ONLINE MARKETING REPUTATION ENTERPRISE”by the ministry of commerce and state owned assets supervision and administration commission of the state council. Welcome to china to visit our factory. Please contact us in any time if you want.