Galvanized steel pipe material: Q195,Q235,Q345,20#,45# etc. OD: 10- ... #,45# etc.SpecificationERWLength3-17m or as your demandTreatmentgalvanized,oiled, painted black or as per customers' requestCertificatesGB3091-2001, ASTM A53, ASTM A106 ... MTSupply Ability10,000Ton/MonthContactName: Dan LvMobile :86-13920276850 Tianjin Lange steel pipe manufacturing CO,. LTD.Tel:86-22-59516111Fax:86-22 ...