TUBING CROSS-OVER Standard:API 5CT&5B Tubing Crossover is used in conventional and thermal oil extraction work to connect tube or facilities of different diameter and thread. Our company can supply tubing crossover of different specification and types as per API 5CT standards according to customer\'s request. size: 1.9\" EU*2-3/8\" NU 2-3/8\" NU*2-3/8\"EU 2-7/8\"NU*2-7/8\"EU 3-1/2\"NU *3-1/2\"EU 2-3/8\" NU* 2-7/8\" NU 2-7/8\" NU*3-1/2\" NU 2-3/8\" EU*2-7/8\" EU 2-7/8\" EU*3-1/2\" EU 2-3/8\" EU*2-7/8\" NU 2-7/8\" EU*3-1/2\" NU 3-1/2\" EU*4-1/2\" NU 3-1/2\" EU*4-1/2\" EU connection: Pin*Pin, Pin*Box, Box*Box