Tired of barrels failing in just 3 months when processing high-calcium PVC? PIPLL has the solution.

Today's PVC extrusion lines are pushed to the limit by high-filler additives, leading to accelerated wear on barrels and compromised productivity. PIPLL offers the definitive solution—our SKD11 Internal Liner Sleeve Barrel is built to transform these challenges into competitive advantages.

Featuring high-hardness SKD11 material, the PIPLL SKD11 Internal Liner Sleeve barrel provides superior anti-abrasion performance and durability against high pressure. It guarantees stable, high-volume output for high-filler PVC applications, directly translating into lower replacement costs, longer equipment life, and uninterrupted production. Choose PIPLL to turn the complexity of high-filler processing into reliable, profitable operations.

PIPLL SKD11 Internal Liner Sleeve Barrel: Maximizing Efficiency in High-Filler PVC Production

14 Years Proven Solution for High-Filler PVC Extrusion

For over 14 years, PIPLL has been a pioneer in developing and manufacturing SKD internal liner sleeve barrels specifically engineered to solve the most pressing wear challenges in high-filler PVC extrusion.  PIPLL as one of the earliest manufacturers to introduce this technology to the global market in 2012, PIPLL have refined our process through thousands of real-world applications across conical and parallel twin-screw extruders.

Back in 2012, the PVC and WPC industries underwent a transformation as calcium carbonate CaCO₃ filler levels surged from 50% to an unprecedented 350%. Traditional nitrided barrels failed in as little as 3 months under these extreme abrasive conditions, while full-alloy barrels were prohibitively expensive for most expanding manufacturers.  PIPLL responded by conducting extensive comparative testing between SKD11 and SKD61 alloys, ultimately selecting SKD11 for its unbeatable combination of extreme wear resistance and cost-effectiveness.

Today, PIPLL SKD11 internal liner sleeve barrels deliver 1.5-2 times longer service life than standard nitrided or conventional alloy barrels when processing high-filler PVC compounds. PIPLL precision-engineered design features hardened SKD11 alloy sleeves embedded within a robust steel body, creating a composite structure that withstands the severe abrasion caused by 200-350% calcium carbonate(CaCO₃) loading.

PIPLL Exclusive Advantages

· Mastered Core Technologies: Proprietary quenching processes and precision CNC grinding ensure perfect fit between the figure-8 shaped internal sleeve and barrel body, eliminating any risk of loosening

· Full Range of Configurations: Available in one-zone, two-zone, three-zone, and full-length designs to meet diverse production requirements

· Global Field-Proven Performance: Trusted by manufacturers in Turkiye, Southeast Asia, Eastern Europe, and the Middle East for reliable operation in the harshest conditions