Tungsten alloy products standard:GB4187-84 Dia:7-50mm material:W1,W2,WAL1,WAL2 Purity : 99.95%min ISO9001:2000 Tungsten rods and barsTechnique: Forged Surface:polished standard:GB4187-84 material:W1,W2,WAL1,WAL2Dia:7-50mmPurity : 99.95%minCondition: Cold roll /hot roll/annealprocessing method:firing,forging,rolling,grinding,casingmarks:your drawing is available Surface ConditionBlack-surface is ...