Grace HDPE pipe extrusion line

Grace HDPE pipe extrusion lines are configured around pipe diameter, wall thickness, output and downstream requirements. The platform combines extrusion, control, die head, calibration, haul-off and cutting into one coordinated system for pipe producers seeking dependable production across a broad range of specifications.

Line configuration

40 L/D single-screw extruder

The 40 L/D single-screw extruder is configured for HDPE and PP pipe production where stable melt quality matters. Its screw and process-control design is intended to support consistent wall thickness, pressure stability and controlled melt temperature for large-diameter and thick-wall pipe applications.

PLC control system

A clear operator interface brings together the main production values, including speed, temperature and pressure. The control concept supports practical recipe management, day-to-day process monitoring and coordinated operation of the line, helping operators work from one consistent production view.

Die head

The die-head flow path is designed to promote even wall-thickness distribution while maintaining a controlled melt-temperature profile. The double-split support concept is engineered to reduce material use compared with a single-split arrangement while supporting sound pipe mechanical performance.

Vacuum tank

The vacuum and spray tank is designed around stable calibration and practical cooling control. Adjustable spray nozzles enlarge the cooling area, while automatic water management supports routine operation. Central vacuum and heat-exchange configurations are available where the project calls for them.

Haul-off

The haul-off unit can be configured with a single drive or independently driven caterpillars. Servo synchronization, high-grip rubber blocks and an anti-stretch chain design are intended to give the pipe controlled traction while helping protect pipe geometry through the downstream process.

Chip-free cutting

For larger pipe dimensions, the chip-free cutter provides a controlled downstream cutting option within this HDPE pipe-line platform. Recipe-based operation and real-time cutting-data visibility help keep the final process station aligned with the selected pipe specification.

Engineering an HDPE pipe line around the complete production duty

An HDPE pipe line is defined from the resin, pipe schedule and operating duty as one system. Diameter alone does not determine the extruder, die, cooling length, haul-off or cutting arrangement; each station has to remain balanced with the selected wall thickness, output objective and site conditions.

• Pipe schedule and material route: the technical starting point is the complete OD x SDR or wall-thickness schedule, resin grade, single- or multi-layer structure and target application.
• Extrusion and die head: the 40 L/D extrusion platform and die-head arrangement are matched to the selected PE or PP material, diameter range, wall schedule and required layer structure. Co-extrusion, stripe and marking arrangements are reviewed as part of the complete product definition.
• Sizing, cooling and factory layout: vacuum sizing and multi-stage cooling are calculated around wall thickness, operating rate, inlet-water conditions and the usable factory length. Cooling capacity is a line-level engineering decision, not an accessory chosen after the extruder.
• Traction, cutting and handling: haul-off track arrangement, contact length, cutting method, pipe support and handling are selected around pipe weight, line speed, required surface protection and the finished-pipe specification.

Information for a technical proposal

• Resin grade, intended application and single- or multi-layer pipe structure
• Complete OD x SDR or wall-thickness schedule, including all required sizes
• Target rate for key sizes, number of outlets and production pattern
• Marking, stripe, co-extrusion, cutting length, handling and packing requirements
• Factory effective length, cooling-water temperature and flow, electrical supply and site constraints
• Required standards, quality-control points, automation and service expectations

The published configuration data is a representative planning guide, not a universal promise. Final output, energy use, cooling length, tooling, quality criteria and contractual performance are confirmed only through project-specific technical review and FAT criteria.

Typical outputs are preliminary platform-selection values, not unconditional contractual guarantees. Final stable line output must be verified against resin grade, pipe diameter and SDR or wall thickness, die throughput, cooling-water conditions, available cooling length, haul-off capacity and cutting cycle.