Plastic pipe with locking integral end connection

摘要: Plastic, such as polyolefin, pipe having a locking integral end connection. The is fabricated with male and female connections in order that the may be press-fitted together interior exterior forming flush uninterrupted surface. One or more radial ribs grooves are formed on of connection while registering series an interfitting axially extending wedge shaped configuration to provide engagement resist any tendency for separation. Interfitting corners rounded distribute stress minimize damage when ends fitted together. bevelled pressed engage by slight resiliency polyolefin construction permit expansion contraction interfit respective two ends. A reinforcing sleeve used over coupling additional strength. wall thicknesses width particularly dimensioned inserted complete lock position without premature engagement.