... 1-2m5.Joints including socket and spigot,male and female,plain or other types6.High capacity: around 60 pcs dailyAdvantages ... structure of pipe wall well-distributed,high compressive strength2.With a lower grade of concrete,to make a high quality pipe3. ... socket and spigot,male and femalePlain,socket and spigot,male and female Plain,socket and spigot,male and female Plain,socket and spigot,male and ...