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rectangular hollow section,square hollow section
galvanized steel pipe,scaffolding tube,square...
spiral submerged-arc welded steel pipe
Electric Resistance Welded Steel Pipe
Carbon API5L Seamless Steel Pipe
Min. Order: 20 Metric Ton
Standard:API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G...
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