... with multi-cavities and one mould with multi-channels,stable and effient production 1. muti-hole pipe mould structure uses advanced technology of multi-cavity, multi-flow ... lasting stability.2.usages: threading tubes,water-supply pipe, draining pipe, gas pipe, telecommunications pipe, land warming pipe, etc.3. types: stent style and co ... 32,φ40,φ50,φ65---φ630 and so on.5. material: PVC, PE, PPR, etc.