Variable Diameter Plastic Pipe Injection Mold

We specialize in manufacturing custom variable diameter plastic pipe injection molds for pipe fittings and fluid handling components. As a professional injection mold manufacturer, we design and build molds based on customer drawings or samples with precise cavity geometry.

The HYX029 mold shown supports variable diameter pipe structures with optimized runner systems (hot or cold), ensuring stable filling, reduced material waste, and consistent part quality. Our molds are built for long service life and efficient production.

ISO 9001 certified. Full service from mold design and trial to injection molding production.

Product Parameters

• Material options: high-grade tool steel (S136, P20, H13) or per customer specification
• Process: precision injection mold design, CNC machining of mold components, EDM, polishing and assembly
• Cavity: single or multi-cavity tooling as required
• Runner system: cold runner or hot runner option
• Mold life: 300,000 – 1,000,000 shots depending on steel grade
• Deliverables: DFM report, T1 sample approval, mold trial and production samples

Applications

• Custom tooling for household appliances, consumer electronics and industrial products
• Housings, handles, structural parts and mechanical components in ABS, PP, PC, PA, POM and other engineering plastics
• Small to medium batch production with consistent dimensional accuracy

Product Advantages

• Full in-house mold design and DFM service with free modification suggestions
• Precision machining to ±0.02 mm with polished cavities for high-gloss surfaces
• Experienced engineers support T1 trials and mass production ramp-up
• ISO 9001 certified process with strict quality inspection at every stage

Frequently Asked Questions

What mold steel do you recommend for mass production?

For production runs we commonly use S136 or NAK80 for polished cosmetic surfaces and P20/H13 for general-purpose tooling. Our engineers will recommend the best grade based on your material, volume and surface requirements.

Can you provide mold samples and DFM before tooling starts?

Yes. After receiving your 3D drawing, we provide a free DFM report with gate, parting line and shrinkage suggestions, then deliver T1 samples for approval before mass production.

What is the typical lead time for a custom injection mold?

A standard single-cavity mold is typically completed in 15–30 days depending on complexity, steel availability and cavity count.