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  1. millimeters

    Plug welding hole at the end of pin

    Material is A36 and the tapered side of the pin is fillet welded on the distribution gas pipeline to abandon the service (100 psi max) using an in-service welding procedure. The sketch is not to scale. I am not considering plugging 1/4x20 threaded hole on top of the pin an in-service weld.
  2. millimeters

    Plug welding hole at the end of pin

    Thanks!
  3. millimeters

    Plug welding hole at the end of pin

    Hello all Can I apply ASME B&PV sec IX procedure (6010 & 7018) to fill up 1/4" hole at the end of 1/5" pin? Kind of plugging the hole to prevent corrosion. Sketch of pin is attached. Thanks! https://res.cloudinary.com/engineering-com/image/upload/v1607390772/tips/Pin_Sketch_-_Copy_tb6han.pdf
  4. millimeters

    compressed air piping system design

    What if pressure go up to 30 psi?
  5. millimeters

    compressed air piping system design

    Hi, I was wondering what is the design standard for the equipment an piping system if pressure is below 15 psi? This a pneumatic system for launching golf ball. Thanks
  6. millimeters

    weld rejection/repair rate at mill

    Hi, Any idea on long seam weld rejection or repair rate at mill for Submerged-Arc welded steel pipes (NPS 36 heavy wall like 19.1 mm)? Thanks
  7. millimeters

    ASTM A572 Gr 60 plate

    Thanks! it helped alot
  8. millimeters

    ASTM A572 Gr 60 plate

    I am looking for ASTM A 572 Gr 60 or 65 plate with wall thickness of 0.875" or higher and CE>0.39% or any equivalent material. I will appreciate any help.
  9. millimeters

    welding pipe

    Hello all, We have following two welding procedure to butt weld API X52 NPS20 X 12.4 mm pipe. My first option would be procedure#1; however, is there any issue welding with procedure#2? Thanks for your inputs. #1 root E6010 hot, fill and cap E7010 #2 root E6010 hot E8010 fill and cap E8018
  10. millimeters

    lamination scan before cathodic welding

    Your comments much appreciated!
  11. millimeters

    lamination scan before cathodic welding

    Does lamination scan require prior to cathodic(cad) welding on pipe? Please let me know why?
  12. millimeters

    station piping

    Thanks
  13. millimeters

    station piping

    Hi, I am looking for some information regarding the pipe fabrication methods. Is there any preference regarding SMLS (Seamless) v ERW (Electric Resistance Welded) v DSAW (Double Submerged Arc Welded) for station piping with MAOP of 650 to 900 psi? Cheers
  14. millimeters

    Storing Low Hydrogen Electrods

    Hi, I would like to know how long LH electrods can expose to atomosphier without baking or redrying. Do we need to rebake LH electrodes in 350C if the welder turns off the portable oven ,which was in 130C, for 1-2 hours (let's say for break)? Thanks
  15. millimeters

    ASME BPVC sec IX welding procedure

    I appreciate your thoughts on this. We need a ASME sec IX welding procedure to cover welding P1G1,2,3 to P1G1,2,3. I want to cover up to 1 inch wall thickness. Proven impact property ir required. I noticed companies are using two PQR welding dual rated 516 Gr60/70 to group 3 plate in 0.249 and...
  16. millimeters

    Corrosion in HAZ

    SJones, Does API 579-1 covers gas transmision pipelines?
  17. millimeters

    Corrosion in HAZ

    Thank you sir.
  18. millimeters

    Corrosion in HAZ

    Hi, I appreciate any input on this. Two corroded area reported on NPS 36 9.5mm wall. Pipe is X65-448 gr. Corrosions do not meet our criteria to repair (RPR is > 1) based on general corrosion. I wanted to get your thoughts on the close proximity of these features to the welds. They do not...
  19. millimeters

    welding pre-straint pipe

    thanks littleinch. we were told by consultant that this amount of tensile strain might be close to tensile strain capacity depends on the size of flaw in girth welded area and they agree to weld a reinforcement sleeve. Pipe is 414 grade, 30"OD X 9.5 mm.
  20. millimeters

    welding pre-straint pipe

    Thanks Racookpe, analyzing data by FEA reveals that we have deformation and axial strain is less than %1 and close to tensile strain capacity. Deformation caused compression in top and tension in bottom. Deformation located in girth welded area but it passed the inspection and no defect...

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