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  1. ehsankeyvan

    a105 instead of a694

    hi....i have one question of piping material....can i use material astm a105 insted of a694?
  2. ehsankeyvan

    hydrostatic test

    is entrapped air in the hydrostatic test cause of pressure drop?
  3. ehsankeyvan

    hydrostatic test

    hi why Failure with entrapped air can result in explosive release and result in death or serious bodily injury?
  4. ehsankeyvan

    ATTACHMENT WELDING

    hi ...i have one question...iam working in the compressor station and its designed according to asme b 31.8....i dont know what means of attachment welding in thIS doc for RT....,?IS IT WELDING THAT USE IN THE SUPPORT?
  5. ehsankeyvan

    difference between effective of 5g & 2g position

    what is different in performance of 5g & 1g position in the piping welding?
  6. ehsankeyvan

    difference between class and grad

    what is different between class 600# and grade b? and can we have material whith grad b and class 600#?
  7. ehsankeyvan

    barrel tee

    hi my friend,,,,what is perfromance of tee whith bareel in the piping?
  8. ehsankeyvan

    back weld

    hi......in the compressor station and according to asme b 31.8 ...can we use back weld for all joint?and if i can....what kind of filler metal must be use?6010 or 7018?and can i back weld in this station and use filler metal in down hill position? thanx

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