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.
GBT9711 L290/X42 PSL1 LSAW Pipeline is divided into seamless steel pipe and welded steel pipe, L290/X42 PSL1 LSAW Pipeline is mainly used in water projects, oil and gas industry, chemical industry, agricultural irrigation, urban construction.
50CrV4 Hot rolled steel bar, 50CrV4 Forged steel bar,50CrV4 features for its high strength and hardness, good weldability, toughness, machinability and so on.
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