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  • Users: Deanlover
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  1. Deanlover

    PREN of TP304/304L in NACE MR0175/ISO 15156-3

    Hi guys, For LNG project, 304/304L welded pipe need comply with the Sour service of NACE MR0175 / ISO 15156-3. In my opinion, generally the hardness test is required for stainless steel pipe in sour service, but the client ask us to provide the PREN and Ni+2Mo in the MTC which is a guidance...
  2. Deanlover

    ASTM A999 Secondary melting

    Hi, I'm from a steel pipe manufacturer in China. And for Clause 3.2 in ASMT A999, I am confused in understanding, the description as below: 3.2 If secondary melting, such as electroslag remelting or vacuum remelting, is used, the heat shall be defined as all of the ingots remelted from a...
  3. Deanlover

    ASTM A358 Product Analysis

    Dear All, I am confused the description about the Product Analysis in ASTM A358, the snapshot is below: analysis shall be made by the manufacturer from the finished pipe of the plate and of the weld deposit. Regarding this description, if only need to check the composition of the base...
  4. Deanlover

    ASTM A358 Out-of-Roundness

    Dear All, I'am confused about the Out-of-Roundness description in ASTM A358. My understanding is following: Out-of-Roundness (ODmax - OD min) ≤ OD*1%, for instance, pipe norminal OD is 168mm, and after measuring, the ODmax is 168.8mm and ODmin is 167.9mm, so the out-of...
  5. Deanlover

    Any reference in ASME about minimum thickness of pipe for impact test

    Dear, Could you have any refernece for ASME stainless steel pipes about minimum thickness requirement for impact test. One EPC asked us to do the impact test for 304L welded pipes with size 219*3.76 and 323*4.57. I check the specification of Shell, Total and DNV, Norsok M630, it specified...
  6. Deanlover

    ASTM A358 CL 1 for OD 6" and below pipe

    Hello, guys, I have a question for small diameter for stainless steel welded pipe for double side welded with filler metal. Many EPCs specify the ASTM A358 CL1 for stainless steel welded pipes in design for all size. For small size, such as OD 6" and below, is there any welding machines which...

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