... 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 ... , applies to pipe piles in which the steel cylinder acts as a permanent load-carrying member ...