Our sleeves are drilled from 1050 filled material, processed according to the desired hole diameter, and heat treated with nitration technique and ground according to the shaft diameter.

Our company provides plastic and rubber extrusion machine manufacturers and companies using these machines with blow molding machines, profile, pipe, paneling, PS sheet, film, compound granule (PVC-PE- PS- ABS- PC- Nylon), recycling granule, produces specially designed screws for PVC cable machines.

The material selection of the screw and sleeve is very important both in the injection process and in the extrusion process. Choosing the right material not only extends the life of the screw and sleeve, but also directly affects the performance of the machine. SMT GROUP chooses screw-barrel materials from steels that are resistant to abrasion and corrosion of plastics.

SMT GROUP manufactures high quality wear and corrosion resistant screw-barrels for extrusion machines. For this reason, our company strives to be as transparent as possible while shipping its products to its customers. It delivers the certificates of the steel used in manufacturing, the documents showing from which companies and on what date it was supplied to its customers, together with the product.