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ASTM A304
ASTM A304
ASTM A304 Standard Specification for Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements.ASTM A304 standard main steel grade:SAE8620H and so on.
ASTM A304 SAE8620H automotive and mechanical structure pipe
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Henan BEBON Iron&Steel co.,ltd.
XICHENG SCIENCE & TECHNOLOGY BUILDING HIGH-TECH DEVELOPMENT ZONE, ZHENGZHOU, CHINA
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