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  1. pipeneer

    Weld a plate in Corten B material

    Thank you Stanweld, I prepared a WPS myself and until Monday shall not know the results of tests on the weld that we made at the workshop for testing, I hope it passes the tests and my worries were mostly about Pre temp. & the Temp. while welding, Voltage, Amps and other parameters but I used...
  2. pipeneer

    Weld a plate in Corten B material

    Thanks metengr I took your advice and have already prepared a WPS (considering the huge difference between the parameters for welding and consumables used for A387 and CortenB,(like Temp,Volt.,Amp.,speed ...etc)it was not so easy, the weld is sent for testing and I just hope that it passes, if...
  3. pipeneer

    Weld a plate in Corten B material

    Hi Folks, Does anybody know if it is possible to weld a plate in Corten B material to anotherv plate in 13CRMO45 material? and if so what WPS could be used. Thanks a lot
  4. pipeneer

    Doubling plate on Corten B & 13CR MO45

    Hi, Can anybody please let me know that what type of material could be used as a DOUBLING PLATE between Corten B (A588) & CR13 MO45? (Corten B is the Boiler side and CRMO is the DB&B Guillotine damper, Since the welding contractor used the wrong WPS to weld together these two different types of...
  5. pipeneer

    Bracing by angle profile

    Hi I need some advise on the following please:I am going to Brace a 5"x2" Nipoflange on a 5" run of pipe using a piece of 60x60x6mm Angle, the top of angle is going to be welded to the lower part of the 2" flange (circumference)and the bottom part to the top of the run, what kind of weld and...
  6. pipeneer

    Gasket Material

    Hi I found out (in addition to your comments)that HARDNESS of the gasket in comparison with the 2 different type of surface material of the flanges, play a significant part when it comes to corrosion and leakage. Thank you
  7. pipeneer

    Gasket Material

    No, the Nipoflange is a standard 2500# RTJ and does not have any perticular weld overlay, if you mean the surface of the flange grooves has been treated. Do you mean the ring might corrode ? Thanks.
  8. pipeneer

    Gasket Material

    Thanks Steve, no the line is not Subsea but it is on a platform at sea !
  9. pipeneer

    Gasket Material

    Hi to All The answer to the following question shall be greatly appreciated: I am trying to install a SSDS (super Duplex)2500# RTJ flanged madular DB&B valve on a Flow Line using a 6"x 2"-2500# RTJ Nipoflange in A350 LF2 material (Flow line is API 5LX52N), now, What type of Gasket is the most...
  10. pipeneer

    Welding End Caps to Reducing Tee

    Thank you all for the suggestions, but since I do not have any flanges in the 24" run of the line, can not go with welding 2 new 24" flanges and blind them for the test, so I guess I just weld the Caps on the Tee, Cross my fingers!!! and after the Hydrotest and cutting away the Caps, weld the...
  11. pipeneer

    Welding End Caps to Reducing Tee

    Hi since I'm not well versed in Welding, my question is Can one weld 24" end caps to run of the 24"x10" Red.tee (Hydrostatic testing)Mat. A234-WPB and cut them away after testing without damaging the bevels on the Tee ? so it could be welded again in the 24" header? As it was mentioned, can I...
  12. pipeneer

    Seal welding on body of the valve

    Hi to All I am in process of installing a DB&B valve (modular) on body of a 20"-900# Valve with the Mat.A350 LCC, the connection is 1" NPTF (plugged drain) that I am going to use, Can I Sealweld the connection afterwards without drasticaly affecting the valve? or destorting the body of the...
  13. pipeneer

    Paint Class for A182P11 pipe& A182 F11 fittings

    Hi to All Can anybody tell me if we need to paint a pipe + fittings made from material type 1.25Cr0.5Mo Steel (P11 & F11)? these shall be installed in a system with DP 132 barg & DT 160 Deg.C, system is Heat Traced electrically and insulated.
  14. pipeneer

    PWHT of Butt Welds

    Thnxs metengr, I'll contact the manufacturer, and believe even your point is valid, if they have componsated for the forces that you mentioned,then keeping the gate closed ! at least mitigates distorsions alot.
  15. pipeneer

    PWHT of Butt Welds

    Hi, I am installing a 6"-900#,BW,FLEXIBLE paralell wedge GATE valve, my questions is while PWH treating of the two BW at the ends of the valve, should we close the wedge completely or let them stay open, my guess is fully closed but any secound opinion would be greatly appreciated. For what it's...
  16. pipeneer

    Gasket type between F316 & PVDF flanges

    Hi to all This is a simple question which I do not know the answer to! so here it comes: What type of gasket is the best choice for bolting a 16 bar PVDF backing flange with a serated face adaptor to the flange of A351 CF8M material buterfly valve (Wafer)?.The system is used in condensate...
  17. pipeneer

    Painting A335 P11 (1.25Cr 0.5Mo STEEL)

    Hi to all A simple question which I do not know the answer to,Does a fabricated spool in A335 P11 grade material which is subjested to Op.Temp.120 Deg C (DP for what it's worth is 132 bar)needs to be painted? and yes what would be it(Aluminium......etc).Thanks in advance.
  18. pipeneer

    Welding of AISI 321 Bellow

    Hi to All I am in the process of changing a metall bellow in AISI 321 material by means of welding it in two places (cut in three pieces due to difficulty installing it in one circular piece, dia.1450 mm)and in place, my question is what would be the best Electrode(material)for this type of...
  19. pipeneer

    Weld Procedure Specification

    Hi Does anyone know to which Standard this WPS belongs to? SFA 4.09-53 Thnx
  20. pipeneer

    Weld Procedure Specification

    Hi Does anyone know to which Standard this WPS belongs to? SFA 4.09-53 Thnx

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