Drill String Cross-over Sub uses AISI4145H chromium-molybdenum steel, execute API specification.We can produce the same-dia type, reducers type and L-type three types, the screw can be cold thread rolling, copper or phosphate treatment.
12CrNi3 alloy structural forged steel round bar and 12CrNi3 hot rolled round bar are our main products, we can supply round bar with good quality and fast delivery at best price.
27CrMoTi is a king of low alloy steel. 27CrMoTi features for its high strength and hardness, good weldability, toughness, machinability and so on.We have almost 750 ton steel bar of 27CrMoTi in stock.
SCM421 Forged steel bar is under JIS G4053-2003 standard. We have almost 750 ton steel bar of SCM421 stock,any need in SCM421 Forged steel bar , please contact us!
G20CrNi4 round bar is belong to cold drawn steel with high quality.G20CrNi4 round bars are mainly used in Shaft, axle shaft, crankshaft, axle, screw, worm, piston rod, joysticks, levers, connecting rod.