Welded pipe joints suitable medium: oil, water, gas and other non-corrosive or corrosive media welded seal fittings, with requirements for more flexible steel pipe specifications, pipe welding and after having a solid connection, good sealing performance. 
It has been widely used in oil refining, chemicals, light industry, textile, defense, metallurgy, aviation, shipping and other systems; also applies to a variety of mechanical engineering, machine tools and other hydraulic transmission pipeline. When the bite type pipe joint production can not meet the needs, as well as corrosion strong case can be considered a priority. Welded pipe joints manufacturing standards
1,the 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 pipe thread 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)