Mechanical (K-type) joint DI pipe,Ductile iron pipe K type, K type joint push on DI pipes Mechanical (K-type) joint DI pipe DUCTILE ... IRON PIPES: Mechanical (K-type) jointSIZE RANGE: ... can supply K7, K8, K10, K12 if requested.JOINT TYPE:Mechanical (K-type) joint. Please contact us if other joints are required.. ...