Short round buckle API thread gauge CSG4.5

Shanghai Jing regulation is engaged in specific business API oil thread gauge, single measuring instrument sales company. The company is headquartered in Shaanxi, China. Since its inception, the spirit of the major oil fields, OCTG manufacturers provide the best quality of oil thread gauge, single gauge of the company founder philosophy. The company's clients include China National Petroleum Corporation; China National Offshore Oil Corporation (CNOOC); oil casing pipe major oil and affiliated stations throughout the country, and coupling production enterprises.