S9074-AQ-GIB-010/248 Rev 1
Table 7-6. Welding Procedure Qualification Material Thickness and Diameter Limits 1/, 2/, 4/, 7/, 8/, 9/, 10/, 11/, 12/, 14/
Test Material Thickness (T)
Thickness Qualified
Pipe 3/, 13/, 14/, 15/
Less than 0.058 inch
T to 2T
0.058 inch to 2T 6/
0.058 inch, up to and including 3/8 inch
0.120 inch to 1.0 inch or 2T, whichever is greater 6/
Greater than 3/8 inch
Other 3/, 5/, 15/
1/8 inch and less
T or 0.058 inch, whichever is less, to 2T
Greater than 1/8 inch but less than 3/4 inch
1/8 inch to 2T
3/4 inch and greater but less than 3 inches
3/16 inch to 2T
3 inches, up to and including 6 inches
3/16 inch to 8 inches
Greater than 6 inches
3/16 inch to 1.33T
Stud Welding Base Material (each stud diameter requires qualification; see 4-4.4 )
T ≥ d/2 (d=stud base diameter)
d/2 to unlimited
Aluminum:
T< d/2
T to unlimited
T ≥ d/3
d/3 to unlimited
Materials except aluminum:
T< d/3
T to unlimited
NOTES:
1/ When qualifying pipe using plate test assemblies, the test material thickness and qualified thickness limits specified for pipe shall govern. When qualifying plate using pipe test assemblies, the test material thickness and qualified thickness limits specified for plate shall govern. 2/ T is nominal thickness. For clarification, the thickness limits (T) are as follows: (a) Butt joint: T is the nominal thickness of the pipe or plate. For materials of different thicknesses, T is the nominal thickness of the thinner member. (b) Fillet and socket joint: For sockets, T is the thickness of the pipe wall; see footnote 6. For fillets, see footnote 10. (c) Full penetration tee joint: T is the thickness of the web member. (d) Pipe boss and partial penetration tee or butt joint: T is the depth of the groove. If the weld from the second side overlaps that of the first side, T is the thickness of the web member or the butt joint member. (e) Hull penetration: T is the thickness of the hull plate. (f) Weld deposited pads, and repairs/build-up: T is the depth of the weld deposit; however, there is no lower thickness limit. (g) For weld cladding and hardfacing, separate qualification limits shall apply for base metal thickness and weld thickness; minimum and maximum qualified thicknesses for each shall be per figure 7-4 for cladding and figure 7-6 for hardfacing. Also, see footnote 14 for cylindrical product diameter.
(Footnotes continued on next page.)
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