... 5.MaterialCarbon steel(#1035,#1045,40Cr,35CrMo,42CrMo,B7,20Mn2,M20) ,Stainless steel(303,304,304L,316,316L),Brass(H59,H62 ... 5.MaterialCarbon steel(#1035,#1045,40Cr,35CrMo,42CrMo,B7,20Mn2,M20),Stainless steel(303,304,304L,316,316L),Brass(H59,H62 ...