What does national standard joint jb/t6381.2-92 mean?
Apply to oil, gas as medium, pipe system in the cone sealing welded straight through 55 degrees non sealing pipe thread pipe joint. Nominal pressure PN is less than or equal to 31.5MPa, the working temperature of -25 DEG ~+80 deg.
The current version is: JB/T, 6381.2-2007, cone welded, straight through, 55 degrees, non hermetic, pipe, threaded, pipe joint. The type, size and technical specifications of the taper sealing welded straight through 55 degree non sealing pipe thread pipe joint are specified.
JB/T, 6381.2-92, cone welded, straight through tubular, threaded, pipe couplings, machinery, industry standards, have been repealed,
