Ca/Zn Stabilizer for Drainage Fittings – TS-6203

Normal-Grade Stabilization for Large-Diameter PVC Drainage Fittings (OD ≥ 200 mm)

Drainage fittings operate in a different world than pressure systems. They are large, thick, often heavily filled, and expected to last underground for decades without drama. The challenge is not extreme pressure — it is thermal stability during processing, dimensional integrity, and long-term durability at a controlled cost.

TS-6203 is a normal-grade calcium/zinc stabilizer, developed specifically for PVC drainage fittings with outer diameters ≥ 200 mm. It is designed to provide reliable heat stabilization during extrusion or molding, while supporting stable processing and acceptable mechanical performance for non-pressure drainage applications.

This stabilizer focuses on practical performance, making it ideal for manufacturers producing large drainage fittings where consistency, compliance, and cost balance are key.

Built for Large Drainage Fittings

Large drainage fittings introduce their own processing realities:

• Thick walls and long heating cycles

• Extended melt residence time

• Increased risk of core degradation

• High filler formulations for cost efficiency

TS-6203 is formulated to handle these conditions without unnecessary complexity. It delivers sufficient thermal protection to prevent degradation during processing, while maintaining stable fusion behavior and consistent surface quality.

Typical applications include:

• Large drainage elbows and bends

• Couplings and sockets

• Tee and Y fittings

• Inspection chambers and connectors

• Large OD drainage accessories

Normal-Grade Formulation, Practical Performance

TS-6203 is positioned as a normal-grade stabilizer, meaning:

• Balanced cost-to-performance ratio

• Reliable stabilization without premium additives

• Suitable for standard drainage requirements

It is not designed for high-pressure or highly stressed fittings — and it doesn’t pretend to be. Instead, it does its job quietly and consistently, supporting mass production of drainage fittings that meet functional and regulatory expectations.

Optimized Dosage for Thick-Wall Drainage Parts

Recommended dosage: 5.0 – 6.0 PHR

This dosage range ensures:

• Adequate heat stability for large cross-sections

• Uniform stabilization through the fitting wall

• Controlled processing without excessive cost

At this level, TS-6203 helps prevent discoloration, degradation, and processing instability during long production cycles.

Processing Stability and Clean Operation

TS-6203 supports:

• Stable fusion behavior

• Predictable melt flow

• Low tendency toward plate-out

• Acceptable surface finish for drainage fittings

These characteristics help manufacturers maintain production efficiency and reduce scrap, especially when producing oversized fittings.

Compatibility with Filled PVC Compounds

Drainage fittings often use medium to high filler content. TS-6203 is compatible with:

• Calcium carbonate (CaCO₃)

• Standard lubricants

• Common processing aids

This allows easy integration into existing formulations without major adjustments.

Environmental and Regulatory Alignment

TS-6203 meets modern environmental requirements:

• Lead-free

• Heavy-metal free

• RoHS compliant

• REACH compliant

It supports safer production and wider market acceptance without increasing formulation complexity.

Typical Applications

• PVC drainage fittings

• Large OD (≥ 200 mm) drainage components

• Sewer and wastewater fittings

• Underground drainage systems

• Building and municipal drainage networks