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...
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...
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
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...
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...
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
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.
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...
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...
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...
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...
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.
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.
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...
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...
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.
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...
