Nominal Pipe SizeOutside Diameter at Welding End (OD)Overall Length (F)Outside Diameter of Lap (G)Thickness of Lap (T)Fillet Radius of Lap (R)Wall Thickness (t)
1/2 to 2.1/2+1.6 -0.81.6+0 -0.76+1.5 -0+0 -0.76Not less than 87.5% of Nominal Wall Thickness
3 to 3.1/21.61.6+0 -0.76+1.5 -0+0 -0.76
41.61.6+0 -0.76+1.5 -0+0 -0.76
5 to 8+2.29 –1.61.6+0 -0.76+1.5 -0+0 -1.6
10 to 18+4.06 –3.052+0 -1.6+1.5 -0+0 -1.6
20 to 24+6.35 –4.832+0 -1.6+1.5 -0+0 -1.6