Pre-galvanized steel tubes are used for transporting water, gas and other liquid, or electrical conduit tubes, electrical conduit pipes Standards: BS 1387/BS 4568, GB/T3091-2008 Materials: Gr.A, Gr.B ASTM A53, ASTM A106, Length: SRL, DRL, specified length as required Outside diameter: 21.3 to 219mm Thickness: 1.8 to 20mm Weight: 0.87 to 98.15kg/m Zinc coating: 90 to 120g/m2 Surface: normal ***ngle, chromate and oiled
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