Manufacture process of seamless steel pipe

    There are any steps to pay attention in the production of seamless steel pipe:

    1) Blank credit. Including the tube storage, tube cut off (cut or gas cut off), peeling grinding, testing and inspection, and seamless steel tube surface treatment (such as pickling) and cold centering.

    2) Tube bad heating. Usually in the ring furnace or inclined furnace slab furnace heating, after the tube is generally baked after the heat sent to the perforation on the order.

    3) Perforated. The solid round steel hollow rolling thick thick walnut, usually using two or three-roll oblique piercing piercing piercing. Explorer is also a continuous steel ingot billet, punching can die in the hydraulic press, or in the two-roll (vertical rolling) pressure piercing mill & nbsp; P.P.M. Mill 1: batch rolling piercing.

    4) Rolling pipe. In order to reduce the hollow hair pipe step by step reduce the wall, must be in the pipe mill special tube processing into a tube. For automatic pipe rolling unit, after rolling pipe but also through the whole machine for leveling.

    5) Reheat and set reduction. In order to eventually obtain the desired tube, the tube is usually reheated and then processed on a sizing machine, a reducer, a stretch saver or a widening machine to obtain finished steel tubes of various sizes.

    6) Slightly round, check the anti-packaging storage.

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