We are Tianjin hmst metal material co.ltd based in Tianjin, China. We are member of TradeKey.com since August, 2012. Our business is related to Minerals & Metallurgy industry and we specifically deal in steel pipe. Please find our product details below:ISO9001 Rectangular steel tube1.OD:15*28-300*4002.W.T:1.5--10mm3.Length:3--12m4.Competitive price, best service5.Certification:ISO90016.MOQ:20Tonsgalvanized steel pipe1) outer diameter:21.3to 219 mm2) surface treatment: galvanized3) WT:1.4-7.5mm4) length:5.8-12m, according to customers'requirementsThank you for taking time to go through our business profile. If there are any questions, inquiries or comments, please feel free to contact us.