Couplings | Size in | Max. OD in(mm) | Min length in(mm) | Grade | ||
NU | EU | NU | EU | |||
23/8 | 2.875(73.03) | 3.063(77.80) | 41/4(107.95) | 47/8(123.83) |
J55 N80 L80 |
|
27/8 | 3.500(88.90) | 3.668(93.20) | 51/8(130.18) | 51/4(133.35) | ||
31/2 | 4.250(108.00) | 4.500(114.30) | 55/8(142.88) | 53/4(146.05) | ||
Crossovers | J55,N80,L80 All kinds of crossovers, connections and sub-couplings of grades J55, N80 and L80 |