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  1. samvanwesen

    Pneumatic pressure test at low (mbar) or higher pressure (+/- 30 barg)

    Hello All, We we going to do some external pressure tests on a thermowell on the flange rating, but the inspector insists of an internal pneumatic test + soap detection. We were going to put 30 barg nitrogen in the thermowell, as this is easily read on our installed manometers. The inspector...
  2. samvanwesen

    Unknown type of fastener

    Has anyone seen one of these before, or are do you think they are made to order? I have been looking over several DIN and ASME standards, but do not find them. Thanks!
  3. samvanwesen

    Thin abrasive cut off wheels

    Hi all, we have some ACM cut off machines running in our shop (https://www.engnetglobal.com/c/f.aspx/ACM013). The company stopped a while ago and we had a steady supply for cutoff wheels (resinoid type abrasive). The cut off wheels measured: 4'' with a hole of 0.5'' and a thickness of 0.002''...
  4. samvanwesen

    ASME B16.5 flange issue

    Hello, we buy blind flanges according to B16.5, EN1092-1, etc. We make thermowells out of these flanges, and e.g. with 2500lbs full penetrant welded flanges, we get quite some distortion in the bolt holes. For larger orders, we subcontract thermowells and we have one supplier that offers...
  5. samvanwesen

    asme welding G-X45NiCrNbTi35-25 to P8

    Dear, Does anyone have experience with G-X45NiCrNbTi35-25 or maunarite xm? I have found reformer tubes made out of G-X45NiCrNbTi35-25. I am curious to weld small (20x20x2mm) pads of Thermocouples (SS310, P8) on top of this pipe (FW). Is there a trick to find a P number for this material? As I am...
  6. samvanwesen

    maximum sag before knuckling pipe (lifting 40m long pipe)

    I am trying to determine whether a +/- 40m long pipe on the floor (3'' SCH80 SS316) can be lifted vertically by a crane. The crane can only lift the pipe from one end. Will the pope knuckle? I am trying to find whether there are guidelines or empirical formulas describing this max bending...
  7. samvanwesen

    Can an 'H' stainless steel have less carbon compared to its normal stainless steel? ss347H-ss347

    Hello! -a welder in our workshop showed me that his 2'' sch160 pipe had the markings SS347/SS347H on it. Looking at the material certificate and the corresponding standards(ASTM A312-A376), chem composition can work for either SS347 and SS47H. What is confusing is what the standard A312...

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