Bop, Mud Pump, Casing Centralizer manufacturer / supplier in China, offering Carbon Steel Seamless Pipe Durable API 5L ASTM A106/A53 Grade B, API 16c Forged Choke Manifold (YJ-21 Series, 15000PSI, ASTM A694 F60, MR0175), Advanced API K55 and N80 Casing Pipe Tubing Solutions and so on.