What is the shrink ratio of the heat shrink tube?

The standard shrink ratio is 2:1.

How does the manufacturer ensure quality?

Quality is ensured through pre-production samples, final inspections before shipment, and adherence to ISO9001 and IATF16949 standards.

PVC Battery Wraps for 18650 Cell Pack

Name: PVC Battery Wraps for 18650 Cell Pack
Brand: Shanghai Wellco International Limited
SKU: 2028773112

Shanghai, ChinaShanghai Wellco International Limited

US$0.10

100-999 Meters

US$0.05

1,000+ Meters

Sample price:US$0.01/piece.Request sample

Product profile

Customization

Available

Application

Insulators

Color

Black, Red, Yellow, Blue, Green

Model NO.

W-SPVC

Material

PVC

Maximum Voltage

<10KV

Thermal Rating

A 105

Rated Voltage

600V

Shrink Ratio

2:1

Tensile Strength

10.4MPa

Operating Temperature

-15~105c

Type

Insulation Sleeve & Tube

Chemistry

Organic Insulation

Certification

ISO9001

Brand

Wellco

Transport Package

Standard Package

Origin

China

Production Capacity

100000m Per Month

Key features

Multi-Color Options: Available in Black, Red, Yellow, Blue, and Green for diverse application needs.

High Insulation Performance: Features breakdown voltage >15 Kv/mm and tensile strength >=10.4MPa.

Customization Available: Other sizes and colors can be available upon request for specific requirements.

Versatile Applications: Ideal for battery packs, capacitors, coils, wire connectors, and decorative packaging.

Durable Material: Made of PVC with waterproof, corrosion resistance, and dust-proof properties.

Certified Quality: Products pass UL, RoHS, and REACH standards with ISO9001 certification.

Professional Manufacturer: Over 20 years of experience in R&D and production of special heat shrink tubes.

Company profile

Shanghai Wellco International Limited

Shanghai, China

Business Type: Manufacturer/FactoryExport Year: 2017-05-22 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤2.82h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummarySHANGHAI WELLCO INTERNATIONAL LIMITED is presented as a supplier of heat-shrink and related tubing products, with automotive, electrical, medical, and other product applications. The available information indicates multiple management and product certifications, more than 10 production lines, 21–30 quality-control staff, annual heat-shrink-tube output of 10,000,000 meters, and export sales representing 90% of total sales. It reports off-peak lead times within 15 working days and peak-season fulfillment of one month. Trading records show repeated heat-shrinkable-tubing transactions with RAYCHEMRPG PRIVATE LIMITED and a transaction involving YAZAKI INDIA PRIVATE LIMITED. However, the slices do not provide sufficient evidence to assess after-sales service, financial credibility, product-development innovation, or customization capability. The supplier’s registration information appears in 2025, but the records do not establish the full operating history of the company.

Supplier typeThe supplier is identified as SHANGHAI WELLCO INTERNATIONAL LIMITED and is associated with heat-shrink tubing, cold-shrink tubing, connector gel boxes, automotive shrink products, and related items. Its stated business covers automotive, electrical and electronics, medical, sporting goods, and other sectors, and it has self-operated import/export rights with 90% of sales reportedly from exports.

CertificationsThe basic products are stated to have passed UL, SGS, ISO9001, ISO14001, and IATF16949-related standards or certifications, while the supplier management-system certifications are listed as TS 16949 and ISO 9001. This provides explicit evidence of relevant quality and management certification coverage.

Production capacityThe supplier reports more than 10 production lines, 21–30 quality-control staff, annual heat-shrink-tube output of 10,000,000 meters, off-peak lead time within 15 working days, and peak-season fulfillment within one month. These stated figures explicitly support substantial production capacity and defined fulfillment capability.

Client casesTrade records associate the supplier with YAZAKI INDIA PRIVATE LIMITED and show repeated heat-shrinkable-tubing transactions with RAYCHEMRPG PRIVATE LIMITED across several 2025 records. These named buyer records provide concrete customer evidence, although the slices do not establish order scale, duration of relationships, performance ratings, or references.