China PP Pipe Extrusion Line Manufacturer & Precision Product Systems

For Polypropylene (PP-R, PP-H, PP-RCT), we engineer custom single screws with an L/D ratio between 33:1 and 38:1. This ensures full plasticization and homogenous melt temperature without inducing severe shear heating. The barrier screw geometry, combined with Maddock shear and pin-mixing sections, guarantees uniform color masterbatch dispersion and bubble-free melt density.

We integrate spiral distributor die heads with internal heating mandrels that eliminate weld lines. Downstream, our vacuum calibration tanks are equipped with high-precision stainless steel sizing sleeves, electronic water-ring vacuum pumps, multi-angle spray manifolds, and real-time closed-loop laser gauge feedback tied to our servo puller systems.

Standard turnkey systems range from 60 to 90 days manufacturing time, depending on customization complexity. Prior to dispatch, clients are invited to our Haian facility for material FAT testing. For international deployment, our Global Service team handles on-site mechanical anchoring, electrical commissioning, and technician operational training backed by 24/7 remote IoT diagnostics.

Yes, through modular barrel and screw engineering. While PP and PE share similar rheological profiles, PA requires higher processing temperatures and different compression parameters. We supply modular screw units and temperature profile programs via our PLC memory storage, allowing operators to execute fast changeovers with minimal resin purge scrap.