Chlorinated Polyvinyl Chloride CPVC Resin Manufacture

CPVC resin is a polymer material obtained from chlorination modification with polyvinyl chloride (PVC) resin. VIA Chemical CPVC resin can be classified as extrusion grade and injection grade according to the K-value of PVC and chlorine content.

CPVC Resin Product Types 

VIA Chemical provides various kinds of CPVC resin with different molecular weights, polymerization degree, and chlorine content, and meets most manufacturing requirements for pipes, fittings, plates, and other structural materials in terms of vacating temperature, corrosion resistance, and flame retardation. We produce customized CPVC resin according to the customers’ requirements.




Extrusion Grade J-700

Injection Grade Z-500

Chlorine Content




30 Mesh Sieving Rate≥



Volatile Content≤



Vicat softening Temperature ≥


Thermal Decomposition Temperature ≥


Tensile Strength≥



Bulk Density >



Specific Gravity>



K Value


61 <60~63 for Extrusion(RM:K 65)>

55<53~55 for Injection(RM:K 57/60)>

*The above specifications are provided for reference only. Products could be produced per client’s requirements.

Chlorinated Polyvinyl Chloride CPVC Resin Properties  

Vicat softening point (VST) is approximately 40 °C higher than that of PVC. CPVC is among the polymers that can be used in high temperature and pressure for extended periods of time.

CPVC is not only resistant to chemical corrosion in room temperature but also has good acid and alkali resistance at even high temperatures, which makes it superior to PVC and other resin and be able to a good replacement for traditional materials in terms of handling corrosive substances.

Tensile strength is 50% higher than that of PVC, and increases by one time than that of PP and ABS resin.

CPVC shows excellent flame resistance and good self-extinguishing characteristic.

The heat conductivity of CPVC is as low as 0.105 KW/ (mk). The heat-resistant pipes made of CPVC could minimize heat loss. Thus, heat-insulating layers are on longer needed.

Polyolefin materials, such as PP/PE, decompose upon contact with residual chlorine in water. However, CPVC resists residual chlorine and no crack and leak can be observed.

Bacteria cannot easily breed due to CPVC pipes resist residual chlorine in water and its inner wall is smooth.

Manufacturing CPVC-finished products is the same with PVC products, which is easy and convenient.

CPVC Resin Features and Applications

CPVC Resin Pipe fitting

CPVC meets the requirements for chemical equipment in terms of mechanical strength and resistant to chemical corrosion, thus can be made into a variety of pipes, fittings, valves, and plates used in chemical industries.

CPVC Resin Pipe Water and Drainage

CPVC is heat and corrosion-resistant and resists residual chlorine in water as well; thus, it can be made into pipes and fittings used for hot and warm water supply and drainage system in various industries.

CPVC Resin electronic product packaging

CPVC shows excellent flame retardancy and is thus the preferred choice while producing plastic products with strict fire requirements, including electronic product packaging, architecture decoration, and in transportation facilities.

CPVC Resin Electrical Power Cable

CPVC can be made into High-voltage electrical power cable conduit due to its excellent heat resistance and insulation characteristic.

CPVC Resin Thermoplastics

CPVC is used for thermoplastics to improve its properties, such as heat resistance and flame retardation.

CPVC Resin anti corrosive painting

CPVC can be used to produce anti Corrosive painting and adhesives. Also it can be used as heat preservation materials for hot water pipes and steam pipes.

CPVC Resin Pipe transferring Crude Oil

CPVC pipe has only 1/200 thermal conductivity of that of steel pipe and possesses small friction coefficient, which makes it good at thermal insulation and improving oil flow efficiency when gathering and transferring crude oil.

CPVC Resin commercial applications

Through injection, extrusion, rolling, and pressing, CPVC/PVC alloys can be made into molding pieces, trays, electric appliance parts and shells, commercial machine casings, tubing, communication equipment, and auto parts, among others.

CPVC Resin submarine cable jackets

CPVC can be used to fabricate fishing nets, work clothes, industrial filter clothes, non-inflammable parachutes, and submarine cable jackets after fabric snagging.

CPVC Resin Packing

CPVC Resin Packing and specification

VIA Chemical CPVC product adopts polyethylene bags for internal use and polypropylene bags for external use with a net weight of 25 ± 0.2 kg per bag.

CPVC Resin Storage and transportation

CPVC resin must be stored in a dry and ventilated warehouse with a stack height not exceeding 10 bags. Solarization and damp environments should be avoided and strict precautions should be taken again stress. CPVC is not considered a dangerous cargo.

CPVC Resin Storage and transportation

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