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  • Users: ram0608
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  1. ram0608

    Failure of HDPE Butt Fusion Joint Reverse Bend Back Test

    Dear Sirs, Please let us know the conclusion of HDPE butt joint quality assesemnt when a sample failed during reverse bend back test at field. We used to this test at field(s) to ensure fusion parameters and machine readiness before start of production joints in every day. At fusion, site...
  2. ram0608

    Failure of HDPE Butt Fusion Joint During Revers Bend Back Test

    Dear Sirs, Please let us know the conclusion of HDPE butt joint quality assesemnt when a sample failed during reverse bend back test at field. We used to this test at field(s) to ensure fusion parameters and machine readiness before start of production joints in every day. At fusion, site...
  3. ram0608

    PE Liner Pull Force at Expansion Loop / Curve Portions?

    We use polyethylene (HDPE-100 Grade)pipes as internal corrossion protection for carbon steel pipes in water injection and crude oil applications. I would like to know what will be pull force at expansion loops / curves while pulling PE Liner from one end to other end. Is Capstan Effect formula...
  4. ram0608

    PE Liner Pull Force at Expansion Loop / Curve Portions?

    We use polyethylene (HDPE-100 Grade)pipes as internal corrossion protection for carbon steel pipes in water injection and crude oil applications. I would like to know what will be pull force at expansion loops / curves while pulling PE Liner from one end to other end. Is Capstan Effect formula...
  5. ram0608

    NDE Tests for Joints of HDPE Pipe and Fittings

    Hi! I would like to know the importance of NDE (UT & RT) tests in HDPE Pipes and fittings joined by butt-fusion, extrusion or electrofusion methods? Is it necessary to check the all joints with NDE testing when joining method followed based on standard parameters (like fusion material, temp...
  6. ram0608

    Thermal Stability of HDPE Pipe?

    Dear Sirs, Is Thermal Stability required more than 150 minutes for a HDPE Pipe at 200 Deg.C? ASTM D 3895 - 07 mentioned Oxidatin Induction Time (OIT) for HDPE material / pipe is more than 150 minutes at 200 Deg.C, Whereas all other internaltional standards ISO 4427, EN 12232 etc, giving OIT for...
  7. ram0608

    HDPE Stub End Design in PE Lined Carbon Steel Spools for Oil & Energy

    Hi! We design HDPE Stubend(s) for use of HDPE Lined carbon steel pipelines application. We provide stubend collor thickness (flange face thickness) double of pipe thickness. In recent conversations, we came to knew stubend flange face thickness 1 to 1.5 times of pipe thickness is sufficient...
  8. ram0608

    Design of HDPE Stub end for PE lined carbon steel pipes in Oil&Energy

    Hi! We design HDPE Stubend(s) for use of HDPE Lined carbon steel pipelines application. We provide stubend collor thickness (flange face thickness) double of pipe thickness. In recent conversations, we came to knew stubend flange face thickness 1 to 1.5 times of pipe thickness is sufficient. We...
  9. ram0608

    HDPE Pipe Faiure at Low Pressure

    Dear Sirs, When we were conducting field pressure testing for 110mm SDR11 HDPE Pipe, it was failed at low pressure i.e 3.0 bar during pressuization. The test pressure was 12.0 bar for 4 hours according to pressure reduction factors with temprature. The temprature was around 50 Deg.C during...
  10. ram0608

    Pressure testing of PE lined Carbon Steel Spools with Nitrogen Gas

    Dear Friends, In a project, we have done Polyethylene Pipe Lining for carbon steel pipes and sucessfully tested for hydrotest at 74.10 Bar (1.5 x MAWP)with potable water. Now, During commissioning customer is asking to do the pressure test for the line with Nitrogen gas at 34.0 bar? We would...
  11. ram0608

    Pressure testing of PE lined Carbon Steel Spools with Nitrogen Gas

    Dear Friends, In a project, we have PE Lined carbon steel pipes and sucessfully tested for hydrotest at 74.10 Bar (1.5 x MAWP). Now, During commissioning customer is asking to do the pressure test for the line with Nitrogen gas at 34.0 bar? We would like to know can we test the above PE Lined...

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