API-X42 steel used for pressure liquid transport, oil, gas, water and other liquid transportation, oilfield engineering, ductwork, construction, steel pipe and oil and gas project which use pipes.
ASTM 5130/ GB 30Cr Steel Round Bar is a kind of Alloy Structural Steel round bar, and it is widely used in making the small shaft, balance lever, rocker, rod, bolts, nuts, gears, and various rollers.
GB/T 3077 20Ni4Mo is a chinese grade of high hardenability and high strength cementation steel .If you need 20Ni4Mo steel round bar, or other grades,pleas e feel free to contact us.
Call Now ! +86 177 2978 0576
Email Now sale@kfqizhongji.com
