Tool Steel bar W1-7,W5,L1,L7, F1,S1,D3, D2, A2, ... -2-5,X30WCrV93,40CrMnMo7 We are professional of supplying Tool steel bar by standard ASTM A600,A681,A686, DIN 17350,GB/T1298 ... ,H21,H10,H11,H12,H13,T1,T4,T5,T6,T15,M2,M3,M7,M35M41,M42By DIN: C70W1,W2,C80W1,W2,C85W2 ...