Hot Plate Welding · Secondary Operations

Hot Plate Welding

Using advanced hot plate welding technology, we create robust, leak-proof plastic assemblies for automotive applications. The process combines controlled heat and pressure to achieve reliable weld strength, making it ideal for our duct sub-assembly products. Every production batch is validated through air-pressure leak testing, ensuring dependable performance and OEM-quality standards.

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Hot Plate Welding at YJ Polytec
2010 Since · Sunguvarchatram
3Welding Lines
2Assembly Lines
6Leak-Test Lines
IATF 16949Certified
What We Make

Inside the Hot Plate Welding division

Cover & Duct Assemblies

Cover & Duct Assemblies

Plastic covers and duct assemblies joined by controlled hot-plate welding for consistent, sealed joints.

Air-Pressure Leak Testing

Air-Pressure Leak Testing

6 leak-test lines verify every welded assembly by air-pressure measurement before dispatch.

Specifications

Capabilities at a glance

Welding Lines
3 hot plate welding lines
Assembly Lines
2 dedicated assembly lines
Typical Parts
Cover & duct assemblies
Leak Testing
6 lines · air-pressure measurement
Quality
In-process inspection · IATF 16949
Integration
Fed directly from injection moulding
Key Features

Built for OEM expectations

3 Welding + 2 Assembly LinesDedicated capacity for cover and duct sub-assemblies.
Air-Pressure Leak Test6 lines confirm a sealed joint on every part.
Integrated With MouldingParts flow straight from injection to welding — shorter lead times.

Parts & Applications

Cover Assemblies Duct Assemblies Sealed Sub-Assemblies Leak-Tested Parts
Our Divisions

Explore the rest of YJ Polytec

Injection Moulding
Since 2010

Injection Moulding

Precision-engineered plastic components for automotive and Samsung Electronics OEM — duct assemblies, sun visors, interior parts, refrigerator and home-appliance parts — backed by moulding, welding, leak-testing and quality control.

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Wire Harness
Since 2023

Wire Harness

Reliable, high-performance wiring harness solutions for the automotive industry — complex assemblies for Hyundai, Kia and next-generation EV platforms, IATF 16949 certified and Hyundai SQ Mark approved.

Explore division
Vibration Welding
Since 2010

Vibration Welding

Vibration welding for robust, leak-proof plastic assemblies — frictional heat at the joint for superior strength and durability, ideal for inlet and adaptor assemblies.

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Air Cleaner Assembly
Since 2010

Air Cleaner Assembly

Complete automotive air cleaner units — from precision-moulded housings to fully assembled air-intake systems with filter and seal assembly, ready for vehicle installation.

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CNC Bending Process
Since 2023

CNC Bending Process

Advanced CNC bending technology producing precision-formed metal components with exceptional accuracy — complex geometries and tight tolerances for automotive applications.

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Pleating & Paper Cutting
Since 2023

Pleating & Paper Cutting

Advanced paper cutting and pleating technology for high-performance filter elements — precise dimensions and uniform pleat geometry that maximise filtration area and airflow.

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Tool Room
Since 2010

Tool Room

An in-house tool room for mould fabrication, repair and scheduled maintenance — keeping tooling, quality and lead times firmly under our own control across the injection floor.

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Have a Hot Plate Welding requirement?

Send us your drawing or specification — we'll come back with a clear, honest plan.

Get a Quote +91 97907 67089