#1 Ring Plunger Set & Machinery Parts Manufacturer in India | Amraiwadi, Ahmedabad, Gujarat
25+

Years of Engineering Experience

In Plastic Processing Machinery Parts Manufacturing

About Rajlaxmi Industries

We "Rajlaxmi Industries" are prominent organization engaged in manufacturing and supplying highly efficient array of Machinery Parts & Plastic Machinery Parts, Ring Plunger Sets (Torpedo Sets), Industrial Nozzles, Screws, Screw Barrels, Injection Heads & Precision Job Works in Ahmedabad, Gujarat, India.

These products are manufactured by our professional team using supreme quality raw material (EN41B, H13, D2, Bimetallic) and advanced CNC multi-axis machining in compliance with international quality standards. Our products are widely used in plastic processing, automotive, packaging, and recycling industries worldwide.

100% Quality Tested
Zero leakage guarantee
Global Export Reach
India, USA, UAE & Worldwide
Rajlaxmi Industries Factory Team & Machinery
Manufacturing Hub
Amraiwadi, Ahmedabad, Gujarat

Our Best Products & Services

Manufactured with supreme quality alloy steel and high-precision CNC machining.

Ring Plunger Set
#1 Flagship Product

Ring Plunger Sets

Specialized Non-Return Valve (NRV) / Torpedo assembly engineered for high-pressure injection molding machines to prevent polymer backflow.

View Details & Specs »
Single Screws
Extrusion & Injection

Precision Screws

Single screws, barrier screws, bimetallic screws, and hardened tool steel screws up to 6,000 mm for high output plasticization.

View Screw Range »
Screw Barrels
Gas Nitrided & Bimetallic

Screw Barrels

Single & bimetallic centrifugally cast barrels with honed inner bore providing unmatched resistance against abrasive filled resins.

View Barrels »
2
Manufacturing Units in India
Ahmedabad, Gujarat
100%
Production Accuracy
CNC calibrated
99%
Manufacturing Speciality
Injection & Extrusion Parts
100%
Client Satisfaction
Global & Pan-India Reach

Our Featured Products

Direct manufacturer pricing with customized specifications.

Ring Plunger Set Torpedo
Ring Plunger Set (Torpedo)

Check ring, torpedo tip, seat, and push rod. Eliminates polymer backflow and ensures accurate shot weights.

Single Screw
Single Extrusion Screw

Deep gas-nitrided EN41B single screw with multi-stage compression flights for film, pipe, and molding.

Single Screw Barrel
Single Screw Barrel

Honed internal bore with high thermal conductivity, pre-drilled for standard thermocouple probes.

Barrier Screw
High Output Barrier Screw

Separate solid and melt channels delivering up to 35% higher throughput with low polymer degradation.

HVOF Tungsten Carbide Screw
HVOF Tungsten Coated Screw

Supersonic thermal spray tungsten carbide layer achieving over 1200 HV (70+ HRC) hardness for extreme wear.

Gas Nitriding Surface Treatment
Gas Nitriding Treatment

Vertical pit furnace case hardening up to 6 meters. 65-70 HRC case depth without bending distortion.

Why Choose Rajlaxmi Industries?

India's most trusted partner for plastic machinery tooling.

Rajlaxmi Industries is known nationwide for the best quality Ring Plunger Sets. Our ring plunger sets are engineered for injection moulding machines to prevent polymer backflow, maintain consistent cushioning, and ensure high shot repeatability.

Manufacturing high quality plastic machinery components to boost production output for our clients while decreasing downtime and mold wear.

We utilize certified EN41B, H13, D2, and Bimetallic alloys tailored to the exact chemical and abrasive properties of your polymers (Glass-filled, FR, PC, Nylon).
Technical Specifications Summary
Primary Product
Ring Plunger Set (Torpedo / NRV Assembly)
Diameter Range
Ø 18 mm to Ø 250 mm (Custom up to 350 mm)
Materials
EN41B, AISI H13, D2, Bimetallic Stellite
Surface Hardness
Gas Nitrided 65 - 70 HRC (950 - 1050 HV)
Manufacturing Plant
Amraiwadi, Ahmedabad, Gujarat, India
Delivery
All India Delivery + Global Export

Our Latest News & Technical Blogs

Industry insights on ring plunger optimization and injection molding performance.

Front Component and Mixtures Ring Plunger Set
Technical Guide

Front Component and Mixtures (Ring Plunger Set)

Detailed guide explaining the mechanical interaction between the torpedo tip, check ring slider, and barrel nozzle during injection forward stroke.

Rajlaxmi Engineering Team Read Full Article »
Ring Plunger Set Maintenance and Optimization
Maintenance

Ring Plunger Set Wear Prevention & Maintenance

Best practices for inspecting check ring clearance, preventing backflow wear, and extending the service life of injection molding front assemblies.

Rajlaxmi Engineering Team Read Full Article »

Visit Our Factory in Ahmedabad

B 19 Vaghjibhai Estate, Opp Amruta High School, Nr Rabari Colony, Amraiwadi, Ahmedabad, Gujarat