astm a106/a53 gr.b/ api 5l gr.b hs code 7306 mill test certificate 20 inch carbon steel pipe
- USD $550 - $600 / Metric Ton
- 10 Metric Ton / Metric Tons
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astm a106/a53 gr.b/ api 5l gr.b hs code 7306 mill test certificate 20 inch carbon steel pipe