Alloy SteelChina Tool/Die/Alloy/Special Mould Steel Grade P20 1.2311 1.2312 1.2738 Flat Plate Round Bar Block Alloy Mold Special Steel, Find details about China Steel Products, steel plate from Tool/Die/Alloy/Special Mould Steel Grade P20 1.2311 1.2312 1.2738 Flat Plate Round Bar Block Alloy Mold Special Steel