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PVC Compound for Pipe Fittings

Application-led rigid PVC compound directions for injection-molded drainage, pressure and related fittings, developed around your part geometry, processing conditions and target performance.

This page does not represent a single public grade. The material direction and final specification are confirmed after reviewing the finished fitting, molding process, destination market and validation requirements.

  • Material Direction:Rigid PVC compound pellets
  • Processing Method:Injection molding
  • Finished Products:Drainage fittings, pressure fittings and related molded components
  • Specification Basis:Confirmed by application review and sample validation
Applications

Finished-Product Applications

The material direction is selected according to part geometry, service conditions, processing method and the requirements that apply to the finished fitting.

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Drainage Fittings

For elbows, tees, couplings and related non-pressure drainage components. Flow, surface quality, impact performance and dimensional control are reviewed around the actual mold and fitting geometry.

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Pressure Fittings

For fittings that require a higher mechanical-performance direction. Pressure rating, destination-market requirements and finished-part validation must be confirmed before a material is recommended.

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Valve and Molded Components

For selected valve bodies and related injection-molded components where flow, surface finish, rigidity and dimensional stability must be balanced.

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Custom Molded Fittings

For non-standard geometries or existing production challenges. Please share a drawing, product photo, current material data and molding conditions for review.

Typical Property Window

Data for Initial Formulation Screening

Finished Product Typical Property Screening Range Unit
Drainage Fittings Density 1.36-1.53 g/cm³
Shore Hardness 70-77 Shore D
Elongation at Break 5-50 %
Tensile Strength 40-55 MPa
Density 1.36-1.43 g/cm³
Shore Hardness 70-77 Shore D
Elongation at Break 50-150 %
Tensile Strength 48-55 MPa
Ball Valve Components Density 1.36-1.42 g/cm³
Shore Hardness 78-81 Shore D
Elongation at Break 100-180 %
Tensile Strength 48-56 MPa
Values are typical screening ranges based on current internal
product information. Final limits, test methods and acceptance
criteria must be confirmed after application review and sample validation.
Production Challenges

How We Address Common Molding Challenges

Material, tooling and processing conditions must be reviewed together. A formulation change is recommended only after the likely cause and validation target are understood.

Incomplete filling or unstable flow may result from an unsuitable material flow profile, processing temperature, injection pressure, or mold design.

We review the material grade together with the molding conditions and part geometry. Where necessary, flow behavior and formulation can be adjusted through sampling and validation to achieve more stable filling performance.

Brittle cracking or insufficient impact strength can be related to formulation balance, processing conditions, wall thickness, stress concentration, or service temperature.

We evaluate the application requirements and failure conditions before recommending material adjustments. Sample testing is then used to verify impact performance and processing stability before production.

Discoloration, burning, or black specks may occur when the material experiences excessive heat, long residence time, contamination, or unsuitable processing conditions.

Our team reviews temperature settings, residence time, screw and barrel conditions, and material handling. Material thermal stability can also be evaluated and optimized when required.

Warpage and dimensional variation can be influenced by material shrinkage, uneven cooling, part geometry, mold design, and processing parameters.

We assess these factors together rather than treating dimensional issues as a material problem alone. Trial results are used to refine the material and processing window for improved dimensional consistency.

Consistent material behavior is important when a validated formulation moves from sampling into repeat production.

Raw material control, formulation management, production parameters, and quality inspection are monitored to reduce batch-to-batch variation. Key specifications can be confirmed during application development and maintained as reference criteria for subsequent orders.

Performance Options

Performance Directions Available for Review

The options shown below are evaluated only where they are relevant to the finished product, process and destination-market requirement.

Flow & Mold Filling

Adjusted around part geometry, wall thickness and molding conditions.

Impact / Rigidity Balance

Reviewed according to the finished fitting and validation target.

Thermal Processing Stability

Developed around the actual residence time and processing window.

Surface & Color Appearance

Color, gloss and visible surface requirements can be reviewed from an approved reference.

Dimensional Control

Property direction is evaluated together with mold design, cooling and tolerance requirements.

Project-Specific Documentation

Declarations or reports are confirmed according to the product, market and agreed test scope.

Processing & Sampling

Processing Fit and Information Needed Before Sampling

Material, tooling and processing conditions must be reviewed together. A formulation change is recommended only after the likely cause and validation target are understood.

Processing Fit

  • Primary Process: Injection molding
  • Material Form: Pellets
  • Product Geometry: Fitting type, wall thickness, gate and critical dimensions must be reviewed
  • Starting Conditions: Provided after the material direction and machine information are confirmed
  • Handling Guidance: Confirmed for the selected material; do not publish one drying or temperature rule for all PVC compounds

Processing Fit

  • Finished product, drawing or clear product photos
  • Molding machine type, screw information and clamping force where available
  • Mold structure, gate design and wall thickness
  • Current material data and processing conditions
  • Target properties, standards and destination market
  • Current defect, production problem or improvement target
  • Expected annual demand and project schedule
01 Requirement Review
02 Material Direction
03 Sample Development & Testing
04 Customer Line Trial
05 Specification & Production Transfer
Supplier Qualification

Quality and Documentation for Supplier Review

Management-system certificates and project documents should be shown with their actual scope, product relevance and validity.

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Management Systems

ISO 9001 / ISO 14001 / ISO 45001 certificate copies, displayed with issuer, scope and validity.

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Product Information

Project-specific TDS and SDS after the material direction is confirmed.

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Batch Documentation

COA, agreed inspection results, lot identification, retained sample and traceability records where included in the approved supply process.

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Compliance Evidence

Declarations or third-party reports only when they match the relevant product, sample, date, destination market and test scope.

Request Qualification Documents
Data Sector

Application Development and Supply Capability

Technical review, sampling and controlled production are connected within one supplier workflow.

30%+

Employees in R&D

8

Sample Lines

26

PVC Compounding Lines

3,600 T/Month

PVC Compound Capacity

FAQ

Frequently Asked Questions

Management-system certificates and project documents should be shown with their actual scope, product relevance and validity.

No. This page describes an application-led material direction rather than a single fixed grade. The final formulation and specification are confirmed based on the finished product, processing equipment, target properties, applicable standards, and sample validation results.

This material direction can be developed for a range of rigid PVC injection-molded fittings and components, including drainage fittings, connectors, elbows, tees, couplings, valve components, and other molded parts.

The appropriate formulation depends on part geometry, wall thickness, processing conditions, mechanical requirements, and the intended application.

Potentially, yes. Materials intended for drinking-water contact require additional review of the target market, applicable standards, formulation restrictions, and required testing or certification.

Please provide the destination market and relevant compliance requirements before sampling so that the material direction can be evaluated accordingly.

Depending on the application, the formulation can be evaluated for properties such as flow behavior, impact performance, hardness, tensile strength, elongation, dimensional stability, color, and processing stability.

Adjustments are made against defined application targets and should be confirmed through sample testing and production trials.

To prepare a suitable sample direction, we typically need the finished product type, drawings or product photos, molding machine information, mold and gate details, current processing conditions, target properties, applicable standards, destination market, and any existing production problems.

Providing information about the current material or reference sample can also help accelerate the evaluation process.

Minimum order quantity depends on the formulation, color, raw material requirements, and production arrangement. Standard or previously developed formulations may have different requirements from newly customized compounds.

Please contact us with your application and estimated demand so we can confirm the appropriate MOQ.

Available documentation may include product specifications, technical data, test information, SDS, COA, and other supporting documents depending on the formulation and application.

If specific compliance reports, declarations, or certificates are required for your market, please identify them during the application review so availability can be confirmed before sampling or production.

Contact Us

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