Extrusion Screws

Screw from Dia. 25 mm to 200 mm & Length upto 6000mm

BASE MATERIAL: Screws are made from nitroalloy steel (AISI 4340 NITRALLOY 135M), stainless steel (304, 316, 416, 17-4ph), Tool steel & CPM tool steel.

HARDENING & HEAT TREATMENT: Toughening, Tempering, Gas/Ion Nitriding& Additional Bimetallic Coatings can be incorporated. We also do special surface treatment like hard nickel plating, chrome plating & PVD coatings, HVOF Thermalspray & PTA weld overlay, vacuum through hardend screws.

High productive smooth barrier meltpro screw with a mixer This barrier screw has proven its value in more than 30 years of field experience.

High productive groovefed barrier meltpro screw with a mixer Open & closed barrier melt & solid seperated channels based designs screws delivers higher throughput at lower melt temperatures at higher melting efficiency. Has proven its benefits in processing polyolefins, PET, ABS and PLA in various extrusion & blow molding processes.

Screw Barrel Applications

  • Blow molding: HDPE, PP
  • Sheet Plant : Air Bubble, PP, HIPS, PVC, Cast PP
  • Film Plant : PVC, Blown Film (Mono Multi Layer), Tape, lamination
  • Pipe Plant : PVC Pipe, HDPE Pipe, PVC Suction, PVC Soft, PVC
  • Pallet Plant : Recycling, Master Batch, & Filler


  • Increased /Higher Melting Efficiency
  • Improved output/stability
  • Improved mixing in the melt channel
  • Improved physical properties
Extrusion Heat Treatment Wear Resistance Bimetallic Screw Spin Cast Inlay Layer Bimetallic Barrel
Gas Nitrided / Plasma Nitrided PTA Boron (Full Length) Colomony 63 Ni/Cr 1.5mm Layer Boron Inlay Layer 1.5 to 2 mm
PM Tool Steel Vacuum Hardened PTA Tungsten 20 to 50% (Last Zone/Entire) Colomony 63/88/83/705 Tungsten (10 to 35%) Inlay Layer 1.5 to 2 mm
Hard Chrome / Tin Plating HVOF Thermal Spray Coating (88% WC 12 Cobalt) Flight OD and Core PM Tool Steel Vacuum Hardened Throughout Hardened