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    Standard of seamless steel details

    China's current standard of seamless steel:

    A. The current standard of seamless steel pipe: A total of 47 of which: GB 25 HB the three special-purpose 19; the basis of two 45

    Two. Commonly used standards: ① GB / T 2102-2006 Steel Pipe inspection, packaging, marking and quality certificate.

    ② GB / T 17395-1998 seamless steel pipe size, shape, weight and allowable deviation.

    ③ GB 5310-1995 for high pressure boiler seamless steel pipe.

    The ④ GB 6479-2000 pressure chemical fertilizer equipment, seamless steel pipes.

    ⑤ GB / T 18248-2000 cylinders with seamless steel pipe.

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