... inner diam.:150--1000mm pipe connection:flat mouth ,bell mouth,tongue-and-groove nonreinfroc we supply a full line of concrete ... :1mpipe inner diam.:150--1000mmpe connection:flat mouth ,bell mouth,tongue-and -groove moth typeFeature:1- high efficiency : 10--15 sections ... /h)18-2213-16 Note:nonreinfroced concrete pipes1-Concrete pipe making machine and pipe mould of all specifications. LJC type pipe ...