PVC Pipe Shredder and PVC Scrap Grinder Machine

PVC starts to degrade at much lower temperatures than PE or PP. When friction in a fast cutting chamber heats it past its stability limit, the material discolours (white pipe regrind turning yellow or brown is the classic symptom), loses mechanical properties, and releases hydrogen chloride, a corrosive gas that is bad for operators and eats the machine’s own steel. A slow-speed shredder like the S3-600, with its 80 rpm rotor, cuts with torque rather than speed, so very little frictional heat enters the material. The regrind stays white and saleable.

Raj Electricals does not build extrusion machines, and we do not rank or name other manufacturers. When you compare extruder suppliers, ask for references from plants making your product, check the service and spares support near you, and ask how the line handles start-ups and die changes, because that decides how much scrap you will make. We build the machines for the scrap side of an extrusion plant: the PVC pipe shredder and the PVC scrap grinder that turn start-up lumps, purge, pipe trims and off-spec lengths back into regrind your own line can reuse. Send us your scrap estimate and we will size the right one.

They are pre-cut into sections that fit the S3-600’s 600 × 1000 mm side-feeding hopper. Most plants use a circular saw or band saw station beside the shredder. Cutting is quick on PVC and lets the shredder work at its rated 300–500 kg/hr instead of fighting awkward lengths. Fittings, profiles and extrusion lumps usually go in without pre-cutting. If most of your volume is long pipe, plan the saw station into your layout from day one.

It depends on your output requirement. If your buyer accepts coarse shred, common when selling to a larger recycler who does their own granulation, the S3-600 alone is enough. If you sell direct to extruders or reuse the material in-house, you need uniform granules, which means adding an RE-series grinder as a second stage. Thin-wall PVC items in small volumes can sometimes go straight to a grinder, but thick-wall pipe should always see the single shaft shredder first.

Rigid PVC, especially filled uPVC, generates fine dust during granulation. Practical measures: keep blades sharp (dull blades rub and powder the material instead of cutting it), screen the regrind so fines are separated from the saleable fraction, give the grinder area ventilation or a dust collection point, and provide operators with masks. The slow primary shredding stage itself produces little dust. It is the high-speed granulation step that needs the housekeeping.

We quote every machine to the job, so there is no list price. The price follows the model and its capacity, the motor, your material (pipe sizes, how thick the walls are, filler content), the options you add, such as a cyclone blower, a conveyor or a control panel, and how the scrap is fed and discharged. A grinder on its own costs less than a shredder and grinder line, so tell us whether your scrap needs both. Our guide to plastic shredding machine price explains each factor. Send us your material and daily volume and we will size the machine and quote it.

Yes, and with PVC we recommend it. Send or bring representative samples (your thickest pipe, your fittings, your extrusion lumps) and we will arrange a trial, so you can check throughput and output size on your actual material, not a figure on paper. Contact us to arrange one.