which type of backing material we can weld for Gr X70

    for piling we are using Grx 70, we change our procedure now we are trying to use backing please tell ,which type of material we can use on Gr X70.


    0  Views: 146 Answers: 1 Posted: 6 years ago

    1 Answer

    I would contact one of the companies that supply pre-formed backing strips for welding certification test coupons for pipe. That way you would get pre-formed (rolled) backing strips shipped to the site,  that are similar in composition, and would also help with alligning the tubes for welding.

    You could order a small amount for immediate delivery to hold you over until a larger main shipment arrived at a later date. The added benefit to all this would be that you could order them made to the specific diameter you need. Just google "pipe welding certification test materials."  Hope this helps you. My experience has always been with open root, and primarily intermediate-sized structural steel structures.  


    You could also check with local fabrication and machine shops to see if they could make some up for you. The added cost of this step would be offset by the increased speed in getting the job done sooner.

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