... 2) dimension :1/2"-8" 3) usage: water , gas line Products :1) galvanized steel pipe & tubes2) dimension ... :1/2”-8”3) usage: water , gas lineFeatures :1) ... Use for low pressure liquids delivery , such as water , gas , oil , heat exchange etcHeBei BaiYi ... galvanized steel pipe/ ASTM steel pipe/ API 5L line pipes /elbow ,tee ,flanges pipe fittings . ...