PVC Resin SG8 (K55-59)

K-Value: 55-59 (Average Degree of Polymerization：650-740)

Bastone PVC Resin SG8 is a high-quality suspension polyvinyl chloride resin ideal for soft and semi-rigid PVC products. With excellent flowability and processing characteristics, SG8 is perfect for flexible films, artificial leather, cable insulation, and medical tubing. Available in both industrial and food-grade specifications from leading Chinese manufacturers, including XINFA, TIANYE, and DAGU.

As an authorized distributor, we ensure competitive pricing, rigorous quality control, and fast delivery from our strategically located warehouses in major port cities. Our expert team provides technical support to help you select the right grade for your specific application.

Description

PVC Resin SG8 is a suspension-grade polyvinyl chloride resin with a viscosity number ranging from 86 to 73 mL/g and a K value of 59-55. This versatile thermoplastic resin serves as the fundamental material for manufacturing a wide range of PVC products. With its balanced molecular weight and excellent processing characteristics, SG8 provides optimal flowability and moldability for various industrial applications. The resin exhibits superior purity with controlled levels of volatiles, residual vinyl chloride monomer, and impurities, ensuring consistent performance in demanding production environments. Available in both industrial and food-grade specifications, PVC Resin SG8 meets stringent quality standards for safety and reliability.

Bastone offers competitive pricing as the authorized distributor of China's leading PVC resin manufacturers including XINFA, TIANYE, and DAGU. Our long-term partnerships with major petrochemical producers enable us to provide both ethylene-based and carbide-based PVC at the most attractive market rates without compromising quality. Beyond competitive pricing, we deliver exceptional service through our expert teams who assist you in selecting the most suitable grade for your specific application. Our additional quality control process sets us apart—we personally inspect and verify every batch before shipment, ensuring the resin meets all specified parameters including viscosity, purity, whiteness, and residual monomer content. With strategically located warehouses in major seaport cities and our own professional logistics company, we guarantee fast turnaround times and reliable delivery schedules. Our years of experience serving the PVC industry mean you receive not just a product, but a complete solution backed by technical expertise and responsive customer support.

PVC Resin SG8 is widely used in manufacturing various soft and semi-rigid PVC products including flexible films, calendered sheets, coated fabrics, artificial leather, cable insulation, medical tubing, inflatable toys, garden hoses, and general-purpose extrusion profiles. Its moderate viscosity makes it particularly suitable for applications requiring good melt flow and easy processing. The resin's excellent plasticizer absorption capacity and compatibility with various additives allow manufacturers to formulate products with desired flexibility, durability, and performance characteristics. Both industrial-grade and food-grade SG8 are available to meet specific regulatory requirements for different end-use applications.

As a well-established authorized distributor with years of experience in the PVC industry, Bastone has built a reputation for reliability and excellence. We have maintained long-term, stable relationships with major Chinese petrochemical producers, successfully distributing premium PVC resins both domestically and internationally. Our comprehensive understanding of the market, combined with our robust logistics infrastructure and commitment to quality assurance, makes us your ideal partner for all PVC resin requirements. Whether you need SG3, SG5, SG8, or SG9 grades, Bastone stands by your side throughout the entire procurement process, ensuring you receive the right product at the right price with the fastest possible delivery. Trust Bastone as your go-to source for all PVC needs.

PVC Resin Grade Comparison (Premium Grade)

Specification	SG3	SG5	SG7	SG8
Viscosity Number (mL/g)	135-127	118-107	95-87	86-73
K Value	72-71	68-66	62-60	59-55
Average Polymerization Degree	1370-1251	1135-981	845-741	740-650
Impurity Particles (pcs) ≤	16	16	20	20
Volatile Content (incl. water) (%) ≤	0.30	0.40	0.40	0.40
Apparent Density (g/mL) ≥	0.45	0.48	0.50	0.50
Sieve Residue 250μm (%) ≤	2.0	2.0	2.0	2.0
Sieve Residue 63μm (%) ≤	8.0	8.0	8.0	8.0
Sieve Pass Through 63μm (%) ≥	95	95	95	95
Fish Eyes (pcs/400cm²) ≤	20	20	30	30
Plasticizer Absorption (g/100g resin) ≥	26	19	12	12
Whiteness (160℃, 10min) (%) ≥	78	78	75	75
Water Extract Conductivity [µS/(cm·g)] ≤	5	5	-	-
Residual VCM - Industrial (µg/g) ≤	5	5	5	5
Residual VCM - Food Grade (µg/g) ≤	5	5	5	5
1,1-Dichloroethane - Food Grade (mg/kg) ≤	150	150	150	150

Factory and Activities

Why Choose Our PVC Resin-SG8?

Competitive Pricing with No Compromise

As an authorized distributor for China's top PVC manufacturers—XINFA, TIANYE, and DAGU—we leverage our strong partnerships to offer you factory-direct pricing. Our bulk purchasing power and established relationships mean lower costs for your business without sacrificing material quality.

We understand that material costs directly impact your bottom line, which is why we work hard to provide the best value proposition in the market while maintaining the highest product standards.

Split-screen comparison showing two identical clear liquid samples in laboratory beakers, with Stone TXIB and Eastman TXIB labels

Modern quality control laboratory with technician analyzing TXIB samples using advanced testing equipment

Premium Quality Standards

Every batch of our PVC Resin SG8 undergoes rigorous testing to ensure it meets international quality benchmarks. We verify critical parameters including viscosity levels, particle purity, moisture content, and residual monomer limits before any product leaves our facility.

Our double-layer quality inspection system means your materials arrive exactly as specified, eliminating production delays and material waste. This commitment to excellence ensures your manufacturing processes run smoothly with consistent, predictable results every time.

Risk-Free Sample Testing

We're confident in our product quality, which is why we offer complimentary samples of PVC Resin SG8 for your evaluation. Test our material in your actual production environment before committing to bulk orders.

This allows you to verify compatibility with your existing formulations, assess processing characteristics, and confirm that our resin meets your exact requirements. Request your free sample today and experience the Bastone difference firsthand.

Lightning-Fast Delivery Network

Time is money in manufacturing. Our strategically positioned warehouses in major Chinese seaport cities, combined with our dedicated logistics company, ensure your orders ship within 24-48 hours of confirmation.

Whether you need a single container or multiple shipments, our efficient supply chain minimizes your waiting time and keeps your production line moving. We understand urgent deadlines and have built our entire distribution system around rapid response times.