... GB3091-2001, ASTM A53, ASTM A106 commodity: hot dip galvanized steel pipeSpecification: 10*10-800*800Standard: GB3091-2001, ASTM A53 ... A106galvanized coating: as customer's demand hot dip galvanized steel pipe is widely used in decorational fields, with professional ... -2001, ASTM A53, ASTM A106, EN10216, EN10219Surface treatment: galvanized, oiled, painted, black or as per customers’ request Payment ...