Certificates & Accreditations
Comprehensive international certifications, regularly audited by independent bodies.
Our Certification Commitment: Every WorldLink product is manufactured and tested in accordance with internationally recognized standards. Our certificates are issued by accredited independent bodies and can be verified on request before you place an order.
Our Certifications
ISO 9001:2025
Quality management system certified and audited by SGS for all HDPE and PVC products.
ISO 4427
PE pipes and fittings for water supply — pressure-rated and long-term performance tested.
ASTM D3035
American standard for PE pipe based on controlled outside diameter and wall thickness.
What Our Certificates Cover
Quality Management
ISO 9001:2025 certified processes covering production, inspection, warehousing and delivery — ensuring consistent quality across every order.
Product Standards
Products tested to ISO 4427, ISO 4437, EN 12201 and ASTM D3035 for water supply, gas distribution, drainage and industrial applications.
Independent Audits
Regular audits by accredited third-party bodies (SGS and others) verify our quality system and product performance year after year.
Documentation Provided With Every Order
Confirms products meet the agreed specifications and standards.
Documents physical and mechanical properties of each production batch.
Pressure test results verifying long-term performance per ISO 1167.
Certifies the use of virgin, approved raw materials.
Need certificates or test reports? We’re happy to share our certificates and batch documentation before you order. Email sales@sdworldlink.com and we’ll reply within 24 hours.
Why Choose WorldLink?
Core values that define our commitment to quality and service
Global Reach
Serving 50+ countries with reliable logistics and timely delivery. Wherever your project is, we deliver.
Custom Solutions
OEM/ODM services with rapid prototyping and full technical support. Tailored solutions for your specific project needs.
ISO-Certified Quality
Manufactured to ISO 4427, ASTM D3035, and international standards. Full traceability from raw material to finished product.
Our Services
Comprehensive support from order to delivery
Global Logistics Support
Reliable shipping with real-time tracking to any destination worldwide.
30 Days Return
Hassle-free returns within 30 days of delivery for quality assurance.
Custom Manufacturing
OEM/ODM services with custom sizes, colors, and packaging available.
Secure Payment
Multiple secure payment options with buyer protection and support.
Our Product Range
Comprehensive HDPE and PVC piping solutions for every application
HDPE Fittings
Complete range of butt fusion, electrofusion, and threaded fittings for gas, water, and industrial piping systems.
HDPE Pipes
High-density polyethylene pipes for water supply, gas distribution, dredging, and industrial applications.
PVC Pipes
Rigid PVC pipes and fittings for drainage, irrigation, sewage, and water supply networks.
Compression Fittings
Mechanical compression fittings for secure, leak-free pipe connections in water and gas systems.
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Fish Farming
HDPE pipes and fittings for aquaculture, fish farming, water circulation, and pond systems.
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Customized Fittings
Custom HDPE high pressure fittings made to your specifications for special piping requirements.
Welding Machine
HDPE butt fusion welding machines and tools for professional pipe installation and joining.
Irrigation Fittings
Complete irrigation solutions for agriculture, landscaping, with drip and sprinkler systems.
Latest News
Company news, industry insights, and product updates from WorldLink
Projects & Case Studies
Real-world applications of WorldLink HDPE piping solutions
Testimonials
What Clients Are Saying
“WorldLink has been our reliable HDPE pipe supplier for over 3 years. Their product quality is consistent, delivery is always on time, and the technical team provides excellent support.”
Zhang Wei — Procurement Manager, Hebei Agricultural Construction
“We ordered DN 500mm HDPE dredging pipes for our sand mining project. The flanged connections were perfect, and the floaters worked exactly as specified. Highly recommended.”
Li Ming — Project Director, Yangtze River Dredging Co.
“As a distributor, we appreciate WorldLink’s wide product range and competitive pricing. Their PVC pipes and fittings have helped us expand our irrigation product line significantly.”
Ahmed Hassan — CEO, Middle East Pipeline Supply
“The quality and consistency of WorldLink’s HDPE fittings have been outstanding across multiple projects. Their technical support team is always responsive and helpful.”
