ASTM A519 Grade 4130 Oil Well Drilling Pipe , Alloy Round Pipe for Oil Industry Description This ASTM A519 Grade 4130 Oil Well Drilling Pipe is a high-performance, seamless alloy steel pipe engineered ...مشاهده بیشتر
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ASTM A519 Grade 4130 Oil Well Drilling Pipe , Alloy Round Pipe for Oil Industry