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  1. Nhan NguyenHong

    Test welder Tabulation Position 5G qualification for Tabulation of weld F,V,O.

    The welder has easily tested and rented manpower by the skill in a 5G position than 6G.
  2. Nhan NguyenHong

    Except MT Test for point hot adjust

    In the process of repairing straight Pipe after welding has issue shrinkage. Could we not mandatory MT at area hot adjustment.?
  3. Nhan NguyenHong

    Test welder Tabulation Position 5G qualification for Tabulation of weld F,V,O.

    I see Figure QW-461.1 in ASME, the position nozzle welding to Pipe as the picture below has position "H". is that right? I am confused about whether the Test welder position 5G only covers (F,V,O) or Test the welder 5G only covers (F,V,H,O) is enough for this Joint. Could we apply welder...
  4. Nhan NguyenHong

    Standard visual accept for the surface plate have issue dent or convex by pressing machine method.

    Could you share the standard of the Code about the case mold marks of the method press machine? How much depth to be accepted for dent or convex on the surface of base material after Pressing?
  5. Nhan NguyenHong

    Material welding SMAW (E901-G H4) have issue flooded outside

    Could you share experience to a solution to decision receiving or return a lot welding material SMAW When it have issue flooded outside. Now , I visual outside anh sureface welding material is normal. I don't know , how to test to decision "Use as is" or return parking to vendor. Please guide to...
  6. Nhan NguyenHong

    Except PWHT thickness weld repair

    In this case, The RT of the welding Joint of Material P4,P5A After PWHT has a defect in the surface of the welding joint. How many thicknesses Could we repair without the PWHT welding joint again.? Could you share a mention of the Code or recommend it?
  7. Nhan NguyenHong

    Cost total for Manufacturing each ton or each Dia inch of Piping for Thermal Plan or Petrol Piping

    Oh, I mean I want to know the standard Cost (USD) (only welding material cost) per Dia Inch of Product Piping when Manufacturing on the Market. Or I want to know the standard Cost (USD)(only welding material cost) per ton of Product Piping when Manufacturing on the Market. Sometimes, I get a...
  8. Nhan NguyenHong

    Cost total for Manufacturing each ton or each Dia inch of Piping for Thermal Plan or Petrol Piping

    How much welding material is for manufacturing Manufacturing each ton or each Diameter inch of Piping for Thermal Plan or Petrol Piping? Could you share your experience for make a budget for new project?
  9. Nhan NguyenHong

    Experience Welding T92,P92 prevent lack of fusion

    Your Idea suggests design remove the Red color area same as a the picture to make a wider edge for easy work.
  10. Nhan NguyenHong

    Experience Welding T92,P92 prevent lack of fusion

    Could you share experiences to prevent welding defect type Lack of fusion on material Pipe SA335-P92 (OD 219 x T61) with Stub SA213-T92 (OD 43.2 x T9.2) ? Now we use welding rod GTAW ER90S-G(Bohle Thermanit MTS 616) , Preheating by electric Pad keep the temperature min 205°C and interpass max 300°C
  11. Nhan NguyenHong

    Standard for weld shrinkage in ASME

    At the moment, I have a Job clarification with Customer requirement a question: Is there a standard for weld shrinkage in each cases in ASME Code or equivalent Code? Could you share some informaition.
  12. Nhan NguyenHong

    welding Material

    At the moment, I have a Job clarification with Customer requirement a question: Is there a standard for weld shrinkage in each cases in ASME Code or equivalent Code? Could you share some informaition.
  13. Nhan NguyenHong

    welding Material

    Thanks you so much!
  14. Nhan NguyenHong

    welding Material

    Could you help me understand about differences between electrode E9015-B91-H4 and E901-B91-H4R ? The suffixes "R" is the mean moisture test in Table 11 Section II Part C AWS 5.5 I have a lot of E9015-B91-H4 on the Product label butt MTR shows E9015-B91-H4R. How to E9015-B91-H4 can be used...
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