2013년 4월 7일

A500 Gr.B ASTM Structural Carbon Steel Pipe

A500 Gr.B ASTM Strustural Carbon Steel Pipe STEELMAX Steel Story   A500 Gr.B를 포함하는 A500을 ASTM에서는 Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural […]
A500 Gr.B ASTM Structural Carbon Steel Pipe
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