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gloria
等级:Senior
文章:883
积分:7295
门派:China
注册:2007-2-26 16:39:03 |
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 Structural Tubing
A500 A500-99 Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes
A501 A501-99 Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing
A847 A847-99a Specification for Cold-Formed Welded and Seamless High Strength, Low Allo y Structural Tubing with Improved Atmospheric Corrosion Resistance
A618 A618-99 Specification for Hot-Formed Welded and Seamless High-Strength Low-Alloy S tructural Tubing
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I still believe, someday, miracle will happen. |
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