Plastic Injection Parts

This page is deliberately titled Parts. Plastic injection at Runpeng exists to complete assemblies — the enclosure that closes an extruded housing, the case that carries a mechanism, the cap, cover or logo'd component that a metal part needs. The range evidences that role: ABS/PP injection parts, a plastic injection moulded part line, and custom plastic parts including parts with logos. Plastic injection machines sit on the factory's equipment list alongside the casting and machining lines.

Buyers whose products are entirely plastic, at consumer scale, will find dedicated plastics factories elsewhere; buyers whose products are metal assemblies with plastic components find something rarer here — the plastic parts designed against the real metal parts they must fit, moulded in the same plant, inspected under the same quality system.

ABS and PP are the named materials. ABS covers the enclosure and case families — the range includes a plastic enclosure product (filed under its enclosure name) and a custom plastic game case — where rigidity and finish matter. PP serves flexible, cost-sensitive components. Custom plastic parts with logos evidence the branding work buyers ask for: a logo moulded in, not stuck on.

As with every page on this site, the claim stops where the evidence stops: these material families and product types are what the range names, and parts are quoted per drawing within them.

A plastic enclosure that must close over a die cast base or an extruded housing is a fit problem before it is a moulding problem. Producing both sides in one factory means the moulding is sampled against the actual metal parts, shut-lines and screw bosses verified on real counterparts. Changes iterate in days inside one plant instead of in weeks between two suppliers' shipping departments. If your assembly mixes materials, send the whole set of drawings — the review is organised for exactly that.

Injection parts programmes stay healthy on two habits. First, sample against the real mating parts: a plastic enclosure proves itself on the actual metal housing it closes over, not on a bench alone, and in this factory those metal counterparts are frequently produced in the next division. Second, freeze colour, logo and surface expectations at first article — moulded appearance is a tooling-and-process outcome, and aligning it after production begins is slower and dearer than aligning it at sampling.

Buyers transferring an existing part should say so at enquiry. A part with an existing mould, a part needing a new mould, and a part being re-specified from a sample are three different projects with three different first steps, and the review will name which one you have before quoting anything.