For more information about GB/T 3077 Alloy steel plate, please clicking Mill Technical Information . If GB/T 3077 30CrMnSiA covers the following issues of hot rolled and forging alloy steel: the dimension, shape, weight, tolerance, engineering specification, test method, inspection rules, packaging, marking, and quality certificates.. The standard applies to alloy structural steel bar 250mm , api 5l x80 specification
Structural steel. It has high strength and toughness, high hardenability, cold deformation, medium plasticity and good machinability. There is temper brittleness tendency, transverse impact toughness difference. Welding performance is good, but the thickness is greater than 3mm, should be preheated to 150 degrees, heat treatment after welding.
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General seamless steel pipe: with 10, 20, 30, 35 and 45 high quality carbon steel, 16Mn, 5MnV low alloy structural steel, or 40Cr, 30CrMnSi, 45Mn2, 40MnB other alloy steel hot-rolled or cold-rolled made. 10,20 and other low-carbon steel seamless pipe is mainly used for fluid pipes. EU 155 Fe 360 DK1 steel, Fe 360 DK1 Manufacturer steel plate
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