1.Thickness: 0.45 - 8 mm 2. O.D.:1/2''-10'' 3.grade:16Mn, A53-A369, Q195-Q345 green house galvanized steel pipe 1).Specification:1/2" to 10" 2).Grade: 16Mn, A53-A369, Q195-Q345 3).O.D.:1/2''-10''(21.3mm-273)4).W.T.:0.75mm-8mm5).Length:3m-10m 6)Zinc:40,50,60,80micron green house galvanized steel pipe