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  • Users: cpewhf
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  1. cpewhf

    How to connect between metal pipe with PVC pipe?

    Any people can enlight me about the connection between metal pipe with PVC pipe? Thanks a lot at advance.
  2. cpewhf

    Can the Pipe be rolled and welded from ASTM A36?

    One section pipe, only 32m and dia=32in, is applied for conveying water from one pond to another pond with the atmospheric conditions . Can it be rolled and welded from ASTM A36? In my opinion, A36 can be selected as shell of tank, so it also can be shaped and welded as the 32in pipe. Is my...
  3. cpewhf

    which standard shall be applied and suitable for Foot Valve?

    Recently, I take part in a water pump station project and select the foot valve for this project, which is applied at inlet of centrifugal pump, in order to prevent foreign material in water from entering the pump. And the foot valve is not often adopted at Petroleum Project, usually used in...
  4. cpewhf

    The designation for thickness of ASME B36.10 and API 5L

    As I know, in the ASME B36.10 the pipe is classified to SCH.No, for sch10,20,40 etc; in API 5L, the pipe is identified as ODxw'th. In ASME B36.10, it is stated that" Pipe of size of wall thickness other than those standards, XS, XXS and sch number were adopted from API 5L. It is not considered...
  5. cpewhf

    Anchor Block Calculation by Manual

    It is well know that for the buried pipeline the anchor shall be applied before the the pipeline out of underground. In the manual calculation for it, the "End movement of buried pipeline" is a critical parameter. This calculation is performed according to "Anchors for Cross-Country Pipelines...
  6. cpewhf

    NDT Inspection on pipeline

    Recently, I take part in a project and come across a problem on the NDT inspection. Usually, the 10% random RT for the buried pipeline is enough, but in this project, the 100% RT is required and it is mandatory. Who can enlight me to persuade them to convince that 10% RT is enouth. Your...
  7. cpewhf

    The material of fiber loose tube.

    I know the PBT(polybutylene terephthalate), PP(Polypropylene) (polyethylene) and PE (polyethylene) that be used the material of fiber loose tube. I want to know the difference of them, and which one is the best. Ths.
  8. cpewhf

    Barred Tee machined with A694 or A234?

    Thank your enlightening me in advance. I am taking part in a project on the detailed design stage. With regard to the material for Barred Tee, in the owner's specification the material is A694 F65, but in my opinion the A234 Gr.WPB is sufficient to the condition due to the pipeline is A106 Gr.B...

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