Fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof

BLOWING HEAD, METHOD FOR PRODUCING A BLOWN FILM AND BLOWN FILM INSTALLATION

Flexible tube and production apparatus therefor

Nozzle for extruding a preform tube

Method for continuously manufacturing composite hollow structure

Fracturing liquid delivery hose for recovery of shale oil and gas, and manufacturing method and co-extrusion mold thereof

Multi-layered fuel tubing

Extrusion parison head for discontinuous foaming

Method of multi-deflector balancing and strengthening

Multi-layered fuel tubing

Method of tubular microlayer and multi-component co-extrusion via deflector perturbation

Manufacturing method and apparatus for FRP bar using rotational nozzle, and nozzle for such apparatus

Concentric co-extrusion die for extruding a multilayer thermoplastic film

Film blowing head

Method and apparatus for forming high strength products