Plastic pipes and profiles may require sizing before entering a mill. Its length, thickness and geometry determine the feeding. When studying blades for crushing pipes, it is advisable to first define whether the equipment should pre-shred bulky pieces or directly produce the required final size.
Input and composition measurements
Record diameter or section, thickness, length and polymer. Identify reinforcements, accessories and mixed materials. A thin-walled hollow piece does not represent the same load as a compact block. The machine must accept the geometry of the waste through the intended feeding system. Do not manually force materials that form bridges or become retained in the hopper.
One or two reduction stages
ZERMA documents demanding granulation applications and configurations that combine crusher and mill. A second stage can be useful when the volumetric input and output size require different functions. The specific need is validated through tests: not all waste requires two pieces of equipment, nor can any mill replace pre-shredding.
Control output and consumption
Compare size distribution, fines ratio and useful production. Record power interruptions and motor load with available means. If the input changes section, the result may also change even if the cutting edge maintains its state. Separate data by waste family so maintenance decisions make sense.
Identify the blades of the installed model
Provide make, model, serial number and rotor and stator references. Include plans and photographs of the accommodations. Length is not enough to validate a blade: hole position, angles, thickness and mounting influence compatibility. Also check the condition of the screen and discharge before concluding that the entire capacity limit is on the edge.

Frequently asked question
Should the pipe always be crushed before granulating?
It depends on the input dimension, the machine and the output quality required. Compare the complete solution using a representative test.
Documentation and related reading
Technical reference: ZERMA: granulation and applications. The practical observations in this guide must be compared with the documentation of the installed equipment.
Expand information with our related technical guide and consult the Sharp industrial spare parts.
Consult a blade or spare part
Send us your query with brand, model, reference and photographs to study the piece and prepare a quote. For tools in service, also see tool options. sharpening and repair.