Approximate weight of a Lap Joint Stub End can be calculated based on its its wall thickness, length and lap diameter. Please note that actual weight of a lap joint stub end from a particular manufacturer may vary depending on manufacturing process. Dimensional standards like ASME B16.9 do not provide weights of butt welding fittings. 

Approximate weight of a Lap Joint Stub End as per ASME B16.9 can be calculated as per following formula  :

Where :

1. W = Weight of Lap Joint Stub End in Kg.
2. OD = Outside diameter of barrel (mm)
3. F = Length of barrel (mm)
4. t = Wall Thickness (mm)
5. G = Diameter of Lap(mm)

LJSE Size	1/2 3/4 1 1-1/4 1-1/2 2 2-1/2 3 3-1/2 4 5 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48
Pattern	Long Pattern Short Pattern
Wall Thickness	mm Inch