Wuxi Eastsun Group is an API 5CT granted corporation to manufacture OCTG products, our company is established in 1983, and we are register supplier for CNPC, SINOPEC and CNOOC. We provides OCTG products with different steel grades and threads as follows: tubing pup joint, casing pup joint, tubing coupling, casing coupling, tubing, casing, and API 5CT crossover. Branch of Wuxi Eastsun Trade Co., Ltd of Eastsun Group is responsible for business, while Wuxi Eastsun Petroleum Tubular Manufacturing Co., Ltd and Taizhou Guangfeng Oil Equipment Manufactory are two branches responsible for manufacturing. Guided by API 5CT specification, we are willing to offer clients with excellent quality of products with best price