Products / PVC Additives / Calcium-Zinc Stabilizers
Ca Stabilizers for Pipe & Fitting
One-pack calcium-based stabilizer systems for extruded PVC pipe and injection-moulded fittings — formulated for excellent processing performance, strong initial and long-term whiteness, and stability against yellowing under UV and heat.
Extruded pipe
Extruded Pipe — CV-CZ-6811 Series
One-pack systems for drainage pipe, wiring conduit, and pressure water-supply pipe — built for excellent processing performance, strong initial whiteness, and long-term stability without turning red.
- Processing performance — excellent extrusion behaviour, consistent output
- Initial whiteness — excellent initial whiteness and colour stability
- Long-term stability — does not turn red with age or UV exposure
- One-pack format — simplified dosing, fewer raw materials to manage
| Application | Model | Appearance | Long-Term Thermal Stability | PHR | Characteristics |
|---|---|---|---|---|---|
| National standard drainage pipe | CV-CZ-6811F8 | White powder/Granules | ★★★★ | 2.8–3.5 | Good whiteness, strong versatility, suitable for formulations with 20–100 parts of CaCO₃ |
| National standard drainage pipe | CV-CZ-6811F8-1 | White powder/Granules | ★★★★ | 2.8–3.5 | Compared with CV-CZ-6811F8, more outstanding stability, suitable for 15–100 parts of CaCO₃ |
| Non-standard drainage pipe | CV-CZ-6811F7 | White powder/Granules | ★★★★ | 3.5–4.5 | Suitable for 50–200 PHR of CaCO₃ |
| Wiring conduit | CV-CZ-6811F | White powder/Granules | ★★★★ | 3.2–3.5 | Good whiteness, less precipitation |
| Water supply pipe | CV-CZ-6811 | White powder/Granules | ★★★★★ | 2.5–3.0 | Good whiteness and excellent stability |
National standard drainage pipe — reference formula (phr)
| PVC-5 Resin | Precipitated / Heavy CaCO₃ | Stabilizer (CV-CZ-6811F8) | TiO₂ | PE Wax | Stearic Acid |
|---|---|---|---|---|---|
| 100 | 25 | 3.0 | 1.4 | 0.3 | 0.2 |
National standard wiring conduit — reference formula (phr)
| PVC-5 Resin | Precipitated CaCO₃ | CPE | Stabilizer (CV-CZ-6811F) | TiO₂ | PE Wax | Stearic Acid |
|---|---|---|---|---|---|---|
| 100 | 33 | 8.0 | 3.2–3.5 | 1.0 | 1.0 | 0.2 |
National standard water supply pipe — reference formula (phr)
| PVC-5 Resin | Precipitated CaCO₃ | MBS | ACR | Stabilizer (CV-CZ-6811) | TiO₂ | PE Wax |
|---|---|---|---|---|---|---|
| 100 | 5 | 0.4 | 0.2 | 3.0 | 1.5 | 0.3 |
Pipe fitting
Pipe Fitting — HT6821 Series
One-pack systems for injection-moulded drainage and water-supply pipe fittings and junction boxes, including low-CaCO₃ organotin-replacement grades — built for excellent whiteness, flow, and weatherability without turning red.
- Processing performance — excellent flow for injection moulding
- Initial whiteness & stability — excellent initial whiteness and colour stability
- Weatherability — excellent late-stage stability, does not turn red
- One-pack format — simplified custom dosing
| Application | Model | Appearance | Long-Term Thermal Stability | PHR | Characteristics |
|---|---|---|---|---|---|
| Drainage pipe fitting, junction box | CV-CZ-6821A | White powder/Granules | ★★★ | 4.8–5.0 | Suitable for 20–40 PHR CaCO₃ pipe fittings and junction boxes, excellent fluidity |
| Powder injection moulding | CV-CZ-6821E | White powder/Granules | ★★★★ | 4.8–5.0 | Suitable for injection moulding of 20–25 PHR CaCO₃ powder, no need for granulation |
| Drainage pipe fitting, junction box | CV-CZ-6821B1 | White powder/Granules | ★★★ | 4.0–4.5 | Suitable for 20–75 PHR CaCO₃ pipe fittings and junction boxes, excellent whiteness |
| Water supply pipe fitting | CV-CZ-6821B8 | White powder/Granules | ★★★★★ | 4.5–5.0 | Suitable for a wide range of CaCO₃, including 5–8 parts; excellent flowability and whiteness, high cost performance |
| Water supply pipe fitting | CV-CZ-6821E9-5 | White powder/Granules | ★★★★★ | 5.5–5.6 | Suitable for various CaCO₃ proportions, mainly <8 PHR; good fluidity and whiteness, replaces organotin (16–110mm fittings) |
| Water supply pipe fitting | CV-CZ-6821E11D | White powder/Granules | ★★★★★ | 6.0–6.2 | Suitable for various CaCO₃ proportions, mainly <8 PHR; good fluidity and whiteness, replaces organotin (16–250mm fittings) |
| Water supply pipe fitting | CV-CZ-6821E11G | White powder/Granules | ★★★★★ | 6.0–6.2 | Suitable for coloured water pipe fittings <8 parts CaCO₃, replaces organotin (16–400mm fittings) |
Coloured pipe fitting & junction box — reference formula (phr)
| PVC-8 Resin | Active Nano CaCO₃ | Stabilizer (CV-CZ-6821A) | ACR | PE Wax | Monoglyceride | Plasticizer | Colour powder |
|---|---|---|---|---|---|---|---|
| 100 | 15–30 | 4.8 | 2.0 | 0.3–0.6 | 1.0–1.5 | 1.5 | Appropriate amount |
National standard drainage pipe fitting — reference formula (phr)
| PVC-8 Resin | Active Nano CaCO₃ | Stabilizer (CV-CZ-6821B1) | ACR | PE Wax | Monoglyceride | TiO₂ |
|---|---|---|---|---|---|---|
| 100 | 25 | 4.5 | 1.6 | 0.4–0.6 | 1.2 | 1.6 |
National standard water supply pipe fitting — reference formula (phr)
| PVC-8 Resin | Precipitated CaCO₃ | Stabilizer (CV-CZ-6821E9-5) | ACR | AC-316A | PE Wax | TiO₂ |
|---|---|---|---|---|---|---|
| 100 | 5.0–8.0 | 5.5 | 2.5 | 0.1 | 0.1–0.2 | 1.6–2.0 |
Compliance
Tested and certified
Both series have passed SGS testing and meet the latest RoHS and REACH standards, with a lot-level Certificate of Analysis on every shipment.
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Available grades
Every grade above is published with its dosage, specification, packing and documentation.