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  • Date: 2014-11-14Hardness measuring methods of thick-walled steel pipe

    Thick-walled steel pipe is commonly using Brinell, Rockwell, Vickers three kinds of indicators to measure its hardness.

  • Date: 2014-11-13Introduction of Flexible walled steel pipe

    Flexible walled steel pipe is a method used by Wellstream companies for repair.

  • Date: 2014-11-12Introduction of precision seamless steel pipe

    Introduction of precision seamless steel pipe

  • Date: 2014-11-11Weld analysis before inspection

    Weld analysis before inspection 1. hazards of welding defects 2. weld surface defects and weld internal defects

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