Manufacturer of pre-galvanized steel pipe OD:20mm-33.7mm WT:0.8mm--2.3mm Steel grade:Q195. Zinc:60-100g/m2 Detailed Informationpre-galvanized steel tube: Product namepre-galvanized steel pipeSpecification20mm-33.7mm*0.8mm-2.3mmMaterialQ195StandardsBS1387, ASTM A53, GB/T3091, BS EN10217, BS EN10219Length<=12m or as your requestProcessing techniqueThreading,welding, stamping, painting, oiling, ...