Piping alloy steel 37Mn steel piping Piping alloy steel 37Mn steel pipingOD10-1170mmWT2-135mmStandardGB,JIS,DIN,AISIGradeCr-Mo alloy/ Mn-V ... ChinaTerms of shipment15-20days after receiving the advanced paymentPackaging6 steel strip ,bundles ,caps ,plastic wrap ,in bulk,seeworthy packing or as customers ...