OM-267357 Page 15
5-5. Clamp Assembly Height Limits By Weld Position (GMAW/FCAW)
Position Height* Max. Coupon Length* Notes
2F
Table 36 in. (0.91 m) 24 in. (610 mm)
3F
Minimum 4 ft. 9 in. (1.45 m) 12 in. (305 mm) Height measured from top of coupon.
Average 5 ft. 2 in. (1.57 m) 12 in. (305 mm) Height measured from top of coupon.
Maximum 6 ft. 8 in. (2.03 m) 14 in. (356 mm) Height measured from top of coupon.
4F
Minimum 4 ft. 9 in. (1.45 m) 18+ in. (457+ mm) Height measured from clamp pad.
Average 6 ft. (1.83 m) 18+ in. (457+ mm) Height measured from clamp pad.
Maximum 6 ft. 8 in. (2.03 m) 18+ in. (457+ mm) Height measured from clamp pad.
1G
Table 36 in. (0.91 m) 24 in. (610 mm)
2G
Minimum 4 ft. 5 in. (1.35 m) 8 in. (203 mm) Height measured from joint.
Average 5 ft. 2 in. (1.57 m) 12 in. (305 mm) Height measured from joint.
Maximum 6 ft. 8 in. (2.03 m) 18+ in. (457+ mm) Height measured from joint.
3G
Minimum 4 ft. 5 in. (1.35 m) 8 in. (203 mm) Height measured from top of coupon.
Average 5 ft. 2 in. (1.57 m) 10 in. (254 mm) Height measured from top of coupon.
Maximum 6 ft. 8 in. (2.03 m) 14 in. (356 mm) Height measured from top of coupon.
4G
Minimum 5 ft. 6 in. (1.68 m) 8 in. (203 mm) Height measured from clamp pad. Longer coupons block
tracking of gun at this height.
Average 6 ft. (1.83 m) 18+ in. (457+ mm) Height measured from clamp pad.
Maximum 6 ft. 8 in. (2.03 m) 18+ in. (457+ mm) Height measured from clamp pad.
*All measurements are approximations. Specific values may vary based on coupon positioning and gun technique. Minimum coupon lengths
are 1 inch (25 mm).
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