Hot Dip Galvanized Steel Pipe：
Standard: ASTM A53, ASTM A106, API 5L, ASTM A519, ASTM A213/A213M
Outside diameter: 21.3 to 323.8mm (1/2 to 12 inches)
Thickness: 1.8 to 20mm
Zinc coating: 350 to 480g/m<sup>2</sup>
Type of end finish: 8TPI thread, one side seamless coupling and one side plastic cap, plain end.
Packing: labeled and bundled together with steel strip
Application: it is mainly applied to health drink water transportation and low pressure liquid and gassy transportation, good structure pipe used in building, and bridge field