... mm 3.Length:1-24m Product nameCHS ERW Mild Steel Pipes Out Diameter21.3mm-610mm, 1/2”-24”Wall ... class, prime, newly produced, secondary , stock etc.Material/Steel gradeA, B, X42, X46, X52, X56, X60, ... ray Test, Ultrasonic Test)PackingSmall sizes packed by steel strips into bundles, big sizes in loose pieces ... or for screwing to BS21 pipe threads, loose steel tubes, scaffolds- used for the conveyance of ...