... JB4730 GB2970 A578CLevel 4:SEL072 EN10160-S1E1 ... steel plates with low alloy and high strength and high toughness steel plate, alloy steel, boiler and vessel pressure steel, bridge steel plate, building steel,shipbuilding and offshore platform steel,mould steel ... , corrosion resistant plate,composite steel plate and 12 series, more than 3000brands, including more than 40 fill a blank in ...