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  1. Design-fab

    Are socket welded connections acceptable for raw water?

    Hi folks, the situation is 2-1/2" 316 schedule 10 pipe connecting to "commodity" type CF8M 3 piece ball valves. The proposal is to GTAW with back purge. A couple of general questions if anyone has experience with this: 1. Is pickling required? 2. If yes I'm not sure that the pickling solution...
  2. Design-fab

    Sheared Edge C Channels

    Hi Folks, Small time trailer builder here. We use off the shelf hot roll formed C channels for crossmembers. The tolerance of these is not the best, especially the squareness of the flanges, which causes various minor issues during fabrication. They are also locally only available in a zinc...

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