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En 10305-1 42CrMo4 4130 4140 4145 4340 Cold Drawn Seamless Alloy Steel Precision Tube

En 10305-1 42CrMo4 4130 4140 4145 4340 Cold Drawn Seamless Alloy Steel Precision Tube
PART I: PRODUCTION INTRODUCTION1. Description: Precision steel tube is a kind of cold drawn or cold rolled steel tube...

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