H2S service API 16C Chiksan Swivel Joint Swivel Joint is a mental pipe adapter installed with roller bearings based on the introduced technology from FMC and our technical innovation. The swivel joints with size ranging from 1â?? to 4â?? and rated working pressure rang of 25-140MPa (3626 PSI-20 000PSI) are available. Various models of swivel joints and relevant repair kits for normal temperature, low temperature and sour gas (H2S) condition can be provided. Long Radius Swivel Joints 10,20,30,50,60,80,100 types for option; Short Radius Swivel Joints 10,20,30,40,50,60,70,80 types for option.