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  • Users: welding1
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  1. welding1

    Piping to ASME B31.3 Low Temperature

    I have pipework made from A333 Grade 6. The code gives it a minimum temperature of -50 degrees C. Are impact tetsts required on the PQR?
  2. welding1

    Flange Rigidity

    Does anybody take any notice of ASME 8 Div 1 Appendix S. It seems odd to me that it is not incorporated in Appendix 2, is there a reason for this? Many Thanks John
  3. welding1

    screwed connections

    Does any body know what the maximum rating is for screwed connections with a tapered thread? I have a pressure vessel rated at 900bar (1300 PSI) with 80mm wall thickness, 490 (70KSI) grade steel, with a ¾ inch NPT screwed connection. Is this likely to be OK? The vessel operates at room...
  4. welding1

    Drive Foundations

    I am extending my driveway using light decorative paving slabs. The drive will only have to take the weight of a light family saloon car. What foundations do I need? The soil below the surface contains large amounts of clay. If I put down 2 to 3 inch of aggregate and then finish with a layer...
  5. welding1

    ASME 8 Bolting

    If I use an A320 B8 bolt in an ASME 8 vessel the max temperature it can see is only 100F, If I use an A193 B8 bolt it can see 1500F. Why is this as both bolts are basically 304 stainless steel, with identical UNS number and mechanical properties?

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