Welded hydraulic fittings suppliers standards

Welded hydraulic fittings suppliers standards:
1, metal fittings O-ring plane for fluid power and general use of sealing joints (JB / T 966-2005)
2, cone seal welded straight couplings (JB / T 6381.1-2007)
3, cone seal welded straight 55 ° non-sealing ferrule pipe fittings (JB / T 6381.2-2007)
4, Cone seal welded straight 55 ° sealing pipe thread fittings (JB / T 6381.3-2007)
5. Cone seal welded straight 60 ° sealing pipe thread fittings (JB / T 6381.4-2007)
6. Cone seal welded 90 ° elbow (JB / T 6382.1-2007)