TABLE I
REINFORCEMENT OF GIRTH AND LONGITUDINAL BUTT WELDS
____________________________________________________________________________
Maximum Thickness of Reinforcement
for Design Temperature
_________________________________________
Greater than
Less Than
750oF
350oF-750oF
350oF
Thickness of Base Metal,
_________
___________
_______
inches
inch
inch
inch
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Up to 1/8, incl.
1/16
3/32
3/16
Over 1/8 to 3/16, incl.
1/16
1/8
3/16
Over 3/16 to 1/2, incl.
1/16
5/32
3/16
Over 1/2 to 1, incl.
3/32
3/16
3/16
Over 1 to 2, incl.
1/8
1/4
1/4
Over 2
5/32
The greater of 1/4
in. or 1/8 times the
width of the weld in
inches.
NOTES:
1. For double welded butt joints, this limitation on reinforcement given
above shall apply separately to both inside and outside surfaces of the joint.
2. For single welded butt joints, the reinforcement limits given above
shall apply to the outside surface of the joint only.
3. The thickness of weld reinforcement shall be based on the thickness of
the thinner of the materials being joined.
4. The weld reinforcement thicknesses shall be determined from the higher
of the abutting surfaces involved.
5. Weld reinforcement may be removed if so desired.
___________________________________________________________________________
(2)
ASME B31.3, conform to Table II.
TABLE II
_________________________________________________________________________
Wall Thickness, mm
Height, mm
_________________________________________________________________________
Less than or equal to 6.40
Less than or equal to 1.60
Greater than 6.40, is less
Less than or equal to 3.20
than or equal to 12.70
Greater than 12.70, is less
Less than or equal to 4.00
than or equal to 25.40
Greater than 25.40
Less than or equal to 4.80
NOTES:
1. Wall thickness is the nominal wall thickness of the thinner of
components joined by butt weld.
2. Height: For "Normal Service" and "Severe Cyclic" conditions, use
thelisted value. For "Category D Fluid Service," use twice the listed value.
Measure from surfaces of adjacent components. The lesser of the two
measurements, in any plane through the weld, shall not exceed the applicable
value at right. Weld metal shall merge smoothly into component surfaces.
__________________________________________________________________________
SECTION 15216N
Page 18
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