Explore our highly integrated industrial-grade compounds, stabilizers, and chemicals engineered for global markets.
Shandong Pulisi Chemical Co., Ltd. was established in 2006 (Stock Code: 307785). The company focuses on petrochemicals, mining chemicals, feed chemicals, and pharmaceutical chemicals. At present, the company has established long-term and stable partnerships with Fortune Global 500 companies such as China National Petroleum Corporation and Saint-Gobain. We always take customer demand as the core orientation and provide tailored solutions to help customers strengthen their market competitiveness.
The company has passed ISO9001:2015 Quality Management System Certification and German BV Certification, and has been awarded multiple honors such as Foreign-Oriented Economic Enterprise, Alibaba Demonstration Base, and Contribution Enterprise. In 2023, the company successfully went public with stock code: 307785.
The company upholds the corporate culture philosophy of "Customer First, Rapid Response; Striving as the Foundation, Efficient Collaboration; Integrity and Uprightness, Agile Adaptation." We focus on providing compliant and high-quality products and supporting services, and are committed to becoming a long-term and stable partner for customers.
Meanwhile, the company has established mature warehousing and distribution systems at key logistics hubs, including Qingdao Port, Tianjin Port, and Xinjiang border ports (Alashankou, Khorgos). We are able to provide flexible supply solutions according to customer needs to ensure timely order delivery. No matter where customers are located, Shandong Pulisi Chemical will safeguard their business development with professional service systems and efficient response capabilities.
We always adhere to the mission of "creating value for customers and making their products better," based on reputation and guaranteed by service. We look forward to strengthening cooperation with partners to create a future together!
(Strict Statement: Shandong pulisi has not established branches outside of Shandong Province. If there is any act of impersonating Shandong Pulisi, our company will reserve the right to pursue legal responsibilities.)
Demonstrating our commitment to quality, environmental responsibility, and international standards.
Honored as a leading chemical supply partner and technology contributor.
Recognized for transparent supply chains and trade stability.
Acknowledged for outstanding growth and logistics excellence.
Polyvinyl Chloride (PVC) is one of the most widely adapted synthetic polymers in the world. It is utilized heavily across structural, municipal, and commercial sectors. Among the various grades of PVC, PVC K67 is widely considered the industry standard for rigid extrusion applications. The "K-Value" (specifically calculated using the Fikentscher equation from dilute solution viscosity measurements) is a direct indicator of the polymer's molecular weight and degree of polymerization.
A K-value of 67 corresponds to a mean polymerization degree of approximately 1000 to 1100. This specific range provides an exceptional balance between melt flow behavior, mechanical tensile strength, and processing window. Below is a comprehensive table detailing the structural and chemical parameters of high-performance PVC K67:
| Property Parameter | Standard Specification (K67 Grade) | Test Reference Method |
|---|---|---|
| K-Value Range | 66.5 – 67.5 | ISO 1628-2 |
| Apparent Density (Bulk) | 0.48 – 0.58 g/cm³ | ISO 60 |
| Volatiles & Moisture Content | ≤ 0.30% | ISO 1269 |
| Plasticizer Absorption (DOP) | 19 – 25 g / 100g resin | ISO 4608 |
| Sieve Residue (>250 μm) | ≤ 2.0% | ISO 4610 |
| Sieve Residue (<63 μm) | ≤ 5.0% | ISO 4610 |
| VCM (Vinyl Chloride Monomer) Residual | ≤ 1.0 ppm | ISO 6401 (GC Method) |
| Thermal Stability (180°C) | ≥ 20 minutes (Congo Red) | ISO 182-1 |
The production of PVC K67 predominantly relies on the Suspension Polymerization Process. In this dynamic batch system, vinyl chloride monomer (VCM) is dispersed in demineralized water using protective colloids (such as polyvinyl alcohol and cellulose ether variants) under high-pressure, nitrogen-purged reactor vessels.
Oil-soluble free radical initiators (typically peroxydicarbonates or peresters like EHP or NPP) are added to kickstart the reaction. The temperature of the reactor is maintained precisely between 53°C and 58°C to yield a K-value of 67. Heat control is highly critical because the reaction is highly exothermic. Advanced reactor systems utilize automated jacket cooling and reflux condensers to maintain isothermal conditions. Once VCM conversion reaches approximately 80–85%, the reaction is terminated with inhibitors to prevent structural branching. The slurry is then stripped of excess VCM, centrifuged to remove water, and dried in fluid-bed dryers to achieve a moisture level below 0.3%.
Analyzing current global demand, regional consumption patterns, and supply dynamics.
PVC K67 serves as the primary backbone of the modern construction and civil infrastructure sectors. In North America and Europe, the demand is driven by sustainable municipal replacements of aging ductile iron water pipelines and trans-continental gas lines. In developing regions throughout South Asia, Latin America, and Africa, rapid urbanization requires millions of tons of rigid PVC conduits, wastewater piping, and window profiles.
The supply dynamic of PVC K67 is closely linked to upstream petrochemical markets, chlorine gas availability, and electricity costs. Because PVC is 57% chlorine by weight (derived from industrial salt electrolysis), manufacturing regions with low electricity costs and reliable petrochemical supply chains hold a massive global competitive advantage. China, as the world's largest producer of PVC, leverages both the calcium carbide process and the ethylene process to ensure continuous, high-volume production even during global energy fluctuations.
Constitutes over 60% of all rigid polymer pipes used in civil engineering, gravity sewers, and pressure systems globally.
Ensures high UV resistance and structural strength for complex architectural window framing systems.
Provides essential flame retardancy and dielectric insulation properties required for commercial wiring networks.
How regional standards and environments dictate PVC K67 optimization and processing.
In the United States and Canada, PVC K67 is highly customized to comply with standards like ASTM D1784 (Cell Class 12454). Municipal pipelines must withstand continuous hydrostatic pressure and resist cracking over a 100-year lifecycle. Processing technicians formulate PVC K67 with high-performance acrylic impact modifiers and calcium-zinc (Ca-Zn) thermal stabilizers to resist degradation at processing temperatures of 190°C to 205°C.
Europe is at the forefront of eliminating lead stabilizers (Pb-free). Consequently, PVC K67 used in EU window profiles must be optimized for multi-component organic stabilizer systems (often based on calcium organic compounds). This requires PVC K67 with highly uniform particle structures to ensure rapid and complete gelation, avoiding micro-voids that could lower impact resistance in cold alpine environments.
In desert climates like the UAE, Saudi Arabia, and Egypt, PVC pipelines are exposed to high ambient temperatures and intense solar radiation. The formulation must include high levels of Titanium Dioxide (TiO₂) and UV absorbers. The thermal stability of the base PVC K67 resin is critical here; any initial structural defects (like allylic chlorine atoms) can trigger rapid degradation during high-shear extrusion in hot climates.
With major infrastructure projects underway in countries like Vietnam, Indonesia, and Brazil, economic efficiency is vital. PVC K67 is often blended with higher ratios of calcium carbonate (CaCO₃) filler. Our K67 resin features a precise void volume structure that accommodates filler loading without sacrificing the tensile strength of the extruded pipe walls.
Why Shandong Pulisi Chemical stands out as a world-class manufacturing and supply partner.
Operating out of Zibo, Shandong Province, Shandong Pulisi Chemical Co., Ltd. (Stock Code: 307785) leverages China's industrial manufacturing capabilities. Since 2006, we have developed a resilient logistics and manufacturing framework designed to address international supply chain disruptions.
Embracing green chemistry, automation, and alternative feedstocks for the next generation of vinyl polymers.
Connect with Shandong Pulisi Chemical at major chemical expos and global distribution points.
Since its establishment in 2006, the company has always adhered to the core corporate philosophy of "industrial, mining, and chemical raw material supply service provider", and is committed to becoming a leading global supplier of chemical raw materials. We adhere to the strategic orientation of "focusing on the development of quality chemical industry", which is not only reflected in our unremitting pursuit of product quality, but also in our continuous investment in technological innovation and service optimization. We are well aware that sustainable development is the source of vitality for enterprises, so the company attaches great importance to environmental protection and social responsibility, striving to promote economic development while safeguarding our shared blue sky and green space. We will continue to uphold our original intention, enhance our research and development capabilities, optimize supply chain management, and further enhance our core competitiveness. We look forward to working together with global partners to create a more brilliant tomorrow in the chemical industry!
Review the core products manufactured and supplied by Shandong Pulisi Chemical.
Essential raw material for chemical synthesis, printing, dyeing, and oilfield applications.
High-density drilling fluid additive designed to stabilize shales and prevent wellbore collapse.
Rapid setting accelerator for concrete, dry mortar, tile adhesives, and construction chemicals.
High-purity chemical reagent used in food processing, pharmaceutical stabilizers, and water treatment.
Industrial mining agent and organic intermediate widely used in copper ore flotation and leather unhairing.
High solubility salt used for dust control, road de-icing, and industrial refrigeration systems.
Acidifier and calcium supplement used in animal feed to promote digestion and reduce diarrhea.
High quality chemical compound for heavy metal precipitation and leather processing.
High-density crystalline granules optimized for easy handling, storage, and reduced dust during manufacturing.
Textile, Printing & Leather
Agrochemicals & Additives
Construction & Coatings
Chemicals For Mining
Chemicals For Oil Drilling
Disinfectants & Solvents
Water Treatment Solutions
Plastic Raw Materials
The global benchmark in product purity, chemical logistics, and comprehensive client care.
Exporting high-demand industrial chemical commodities to more than 100 countries and regions globally.
More than 20+ years of export experience, maintaining cooperative relations with more than 1,000 international companies.
Recognized with ISO Certification, SGS validation, K-REACH European standard compliance, and FAMI-QS Certification.
We always provide reasonable prices based on customization and design requirements.
We maintain large warehousing capacities directly at the major shipping ports, enabling fast transportation.
Efficient and professional sales team offering immediate after-sales service and ongoing formula support.
We maintain long-term, stable relationships with global enterprises, ensuring reliable supply lines.
Expert answers to questions about PVC K67 specifications, applications, and purchasing logistics.
High-purity building block compounds and industrial intermediates to complete your supply chain requirements.
Pulisi