welding procedure
welding procedure
(OP)
Hello friends, please confirm what i understand as per QW- 424
If my PQR IS P4 TO P8 on BASE of this PQR CAN I Qualified to make WPS P4 TO P1, P4 TO P8 , P4 TO P3.
AS PER QW-424 BASE METALS USED FOR PROCEDURE
Base Metal(s) Used for Procedure Qualification ---- Base Metals Qualified
One metal from a P-Number to any metal from any other P- Number ----- Any metal assigned the first P-Number to any metal assigned the second P-Number.
please confirm
regards
stanly
If my PQR IS P4 TO P8 on BASE of this PQR CAN I Qualified to make WPS P4 TO P1, P4 TO P8 , P4 TO P3.
AS PER QW-424 BASE METALS USED FOR PROCEDURE
Base Metal(s) Used for Procedure Qualification ---- Base Metals Qualified
One metal from a P-Number to any metal from any other P- Number ----- Any metal assigned the first P-Number to any metal assigned the second P-Number.
please confirm
regards
stanly





RE: welding procedure
RE: welding procedure
RE: welding procedure
STANLY
RE: welding procedure
QW-424 IS
One metal from a P-Number to any metal from any other P- Number ----- QUALIFIES -Any metal assigned the first P-Number to any metal assigned the second P-Number.
SO i can interpreted
if my PQR IS P4 TO P8 on base of this PQR WILL Support to make WPS -- P4 TO P1, P4 TO P8 , P4 TO P3.
stanly.
RE: welding procedure
QW-403.12 A change from a base metal listed under one P‐Number of Table QW/QB-422 to a base metal listed under another P‐Number. When joints are made between
two base metals that have different P‐Numbers,requalification is required even though the two base metals have been independently qualified using the same
procedure. When the melt‐in technique is used for joining P‐No. 1, P‐No. 3, P‐No. 4, and P‐No. 5A, a procedure qualification test with one P‐Number metal shall also qualify for that P‐Number metal welded to each of the lower
P‐Number metals, but not vice versa.
The above does not apply to P-No 8 base material. It really is self explanatory.
RE: welding procedure
thanks metengr
so it means i have to do separate(PQR) welded coupon for p4 to p8 , do again bend and tensile testing & THEN GO FOR WPS.
COMPLETE NEW PQR WITH WPS (P4 TO P8).
REGARDS
stanly
RE: welding procedure
Get someone who understands the ASME IX code to help you - this forum is not here to help people who do not have a clue what they are doing !
You already have a P4 to P8 PQR based on your first post so why would you do it again ?
RE: welding procedure
this form is to ask & transfer your knowledge.
if you don't want to interfere nicely, please don't interfere.
don't try make engineering forms name bad.
please don't use any other language which heart somebody.
i know i realize mistake but nobody perfect that's why we are here.
have a nice day.
stanly
RE: welding procedure
RE: welding procedure
it was my typo mistake when i was replying to metengr
i was mean p4 to p4 which qualify for welding P4 to P3 and P4 to P1.
thanks.
stanly
RE: welding procedure
With all due respect how does a P4 to P8 or a P4 to P4 qualify to weld P3 or P1 ?
QW 403.12 quoted by metengr is applicable to Plasma Arc welding only,
Regards,
Shane
RE: welding procedure
Base Metal(s) Used for
Procedure Qualification
Coupon
One metal from P‐No. 4 to any
metal from P‐No. 4
Base Metals Qualified
Any P‐No. 4 metal to any metal
assigned P‐No. 4, 3, or 1
RE: welding procedure