provide qualified galvanized steel pipe MaterialQ195-Q345, GR.BSpecification(SHS)Square hollow section pipe(RHS) rectangular hollow section pipe10*10-- 600*600mm*0.5-15mm20*30mm-80*120mmLength3-17m or as your demand Treatmentgalvanized,oiled, painted black or as per customers' requestCertificatesGB3091-2001, ASTM A53, ASTM A106 EN10216,EN10219Manufacture Technique high frequency welded Packaging ...