Standards of seamless steel pipe ASTM / ASME Product Name Executive Standard Dimension (mm) Steel Code / Steel Grade Black and Hot-Dipped Zinc-Coated Seamless Steel Pipes ASTM A53 Ø10.3~1200 x WT1.0...مشاهده بیشتر
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ASTM A53 Round Steel Pipe Welded Seamless Hot Rolled Precision