GB/T 3077 30CrMnSiA alloy steel plate is a medium carbon, high strength, poor welding performance. After tempering, GB/T 3077 30CrMnSiA alloy steel plate has high strength and sufficient toughness and hardenability.
KUNFENG heavy machinery co., LTD., the production of broken walls, and through a unique process, the wear-resisting degree of crushing wall is greatly improved, and reduce a certain cost for the customer.
20# carbon steel is very common is china market under GB/T 699 standard. For GB/T 699 20# carbon steel,we henan KUNFENG can offer forged round bars OD 80 mm - 1200 mm. GB/T 699 20# round bar is widely used in the various fields. GB/T 699 20# round bar
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