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  1. lolo78

    Vaccum test

    Hello, I have a steel pipe line with material A106Gr.B. I use the ASME code B31.3 The pipe line conditions are -0.7b at 72°C. The Ø of the line is 28". Is there somewhere a standard to test this line ? I know how to fill a table to specify a hydrotest pressure but not for vaccum line !! Do we...
  2. lolo78

    Mechanical Properties of nuts

    Many thanks Desertfox
  3. lolo78

    Mechanical Properties of nuts

    Hello, I have many Material Certificates concerning nuts and I can not find any informations about Tensile Strenght, Yield Strenght and Elongation. Same thing in the different suppliers documentation. I talk about nuts and not Bolts or Stud-Bolts. Do the manufacturer make obligatory these tests...
  4. lolo78

    Transform Valves SW in BW

    To terje61 : It's not easy, we are in shutdown during 50 days (I have never seen a long time like this before !!). Delivery time for valves is very long (I'm French), actually, about 3 or 4 months minimum. To roby : All Ø are under or equal to 1"1/2 To onrush : My client proposed this. He is...
  5. lolo78

    Transform Valves SW in BW

    Thanks JimCasey. In fact, I learned they want to weld an indermediate piece made by themself, like a reduction, welded in full penetration. One side (valve side) will be male with a shoulder at the external diameter of the valve and the other side like the pipe (I am waiting their drawing). Why...
  6. lolo78

    Transform Valves SW in BW

    Hello Everybody, I have a project in Russia and I learn today I can't weld any valves in SW (GostR do not accept SW). My customer wants to make a reduction to transform the valves SW in BW. Class of my valves is #2500. What do you think about this ?

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