SAE 4130 AISI 4130 SAE 4140 AISI 4140 SAE 4145 AISI 4145 SAE 4340 AISI 4340 Cold Drawn Machined Turned Alloy Steel Hollow Bar Q+T Normalized and Tempered

China SAE 4130 AISI 4130 SAE 4140 AISI 4140 SAE 4145 AISI 4145 SAE 4340 AISI 4340 Cold Drawn Machined Turned Alloy Steel Hollow Bar Q+T Normalized and Tempered, Find details about China SAE4145 Hollow Bar, AISI 4145 Hollow Bar from SAE 4130 AISI 4130 SAE 4140 AISI 4140 SAE 4145 AISI 4145 SAE 4340 AISI 4340 Cold Drawn Machined Turned Alloy Steel Hollow Bar Q+T Normalized and Tempered