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Precision Plastic Welding Solutions

Trusted by professionals worldwide — Dowelding (WELPING) delivers high-performance HDPE butt fusion, electrofusion, and extrusion welding equipment with over 17 years of industry leadership.

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17+
Years in Industry
60+
Countries Served
1000+
Machines Shipped Annually

Built to Last — Over 17 Years in the Poly Pipe Industry

Since its founding in 2005, Dowelding has been a pioneer in the design, manufacturing, and export of HDPE pipe welding equipment and accessories. With a global footprint and a reputation for durability and precision, we serve clients across construction, water supply, gas distribution, and industrial sectors.

In 2021, our founder Mr. Pan launched the WELPING brand to elevate the standard in plastic welding technology — focusing on innovation, quality, and unmatched customer support.

  • Expertise in HDPE, PP, and PE pipe systems
  • Full range from 20mm to 1600mm capacity
  • OEM/ODM support with fast delivery
  • Dedicated technical service and training
Learn more about WELPING
Welding Machine in Factory

Our Product Range

High-performance plastic welding machines engineered for reliability, precision, and ease of use in field and industrial environments.

90MM to 315MM HDPE Hydraulic Butt Fusion Machine

90MM to 315MM HDPE Hydraulic Butt Fusion Machine

Heavy-duty hydraulic system for precise alignment and consistent weld quality in medium to large diameter HDPE pipes.

  • Range: 90–315mm
  • Type: Hydraulic Butt Fusion
  • Application: Water/Gas pipelines
315MM to 630MM Hydraulic Butt Welder Machine

315MM to 630MM Hydraulic Butt Welder Machine

Industrial-grade fusion machine with automatic pressure control and data logging for compliance and traceability.

  • Range: 315–630mm
  • Pressure: 22 MPa max
  • Features: Data logger, auto clamp
WP315Q Gas Piping Automatic Butt Fusion Welding Machine

WP315Q Automatic Butt Fusion Welder

Fully automatic system designed for gas pipeline installations with safety interlocks and digital process control.

  • Automation: Full auto cycle
  • Standards: ISO 21307 compliant
  • Use: Gas distribution networks
20MM to 1200MM Electrofusion Welding Machine

20MM to 1200MM Electrofusion Welder

Versatile electrofusion unit with wide diameter compatibility and intelligent voltage regulation for consistent joint integrity.

  • Range: 20–1200mm
  • Power: 36V DC output
  • Portability: Lightweight & rugged
Booster-EX3 Weldy Plastic Extrusion Welder

Booster-EX3 Plastic Extrusion Welder

High-output extrusion welder for structural repairs, tank linings, and large-diameter pipe joining with adjustable temperature control.

  • Type: Extrusion Welding
  • Temp Range: 200–300°C
  • Use: Repairs, fabrication
WELDY Mini Welder GEO2 Handheld Extrusion Welder

WELDY Mini Welder GEO2

Compact handheld extrusion welder ideal for tight spaces and on-site repairs. Ergonomic design with quick heat-up.

  • Weight: 2.1 kg
  • Heating Time: <60 sec
  • Application: Field repairs
WP1600A Plastic Pipe Butt Fusion Welding Machine

WP1600A Butt Fusion Machine

Ultra-heavy-duty machine for 1000–1600mm HDPE pipes. Designed for large-scale infrastructure and municipal projects.

  • Max Diameter: 1600mm
  • Frame: Reinforced steel
  • Use: Municipal water systems
Electrofusion Coupling Fittings

Electrofusion Pipe Fittings

Complete range of EF couplings, elbows, tees, reducers, and caps for leak-proof, high-strength joints in HDPE systems.

  • Types: Coupling, Elbow, Tee, Cap
  • Diameter: 20–1200mm
  • Standards: ISO 4427, ASTM F714
View All Products on Official Site

Why Choose Dowelding?

Engineered for performance, durability, and customer success.

Built to Last

Robust construction using industrial-grade materials ensures long service life even in harsh environments.

Fast & Efficient

Optimized heating and cooling cycles reduce downtime and increase productivity on-site.

Full Technical Support

From setup to maintenance, our team provides training, manuals, and remote assistance.

Global Reach

Serving over 60 countries with fast shipping, local agents, and multilingual support.

17+
Years of Industry Experience
1000+
Machines Exported Annually
60+
Countries Served

Frequently Asked Questions

What types of pipes can your machines weld?

Our equipment is designed for HDPE, MDPE, PP, and other polyolefin pipes used in water, gas, and industrial applications.

Do you offer OEM/ODM services?

Yes, we provide customized solutions including branding, packaging, and technical modifications based on client requirements.

What is the delivery time for standard machines?

Standard models are typically shipped within 7–15 days after order confirmation. Custom units may take 20–30 days.

Do you provide training and technical support?

Yes, we offer comprehensive training videos, user manuals, and direct technical support via email and WhatsApp.

Are spare parts available?

Yes, all critical components including heating plates, clamps, and control units are available for purchase and fast delivery.

Get in Touch

Reach out for product inquiries, technical support, or partnership opportunities.

Phone / WhatsApp
+86-18989878778
Email (Sales Manager)
[email protected]
Office Address
Room 301, Building B, Xiaoshan Chamber of Commerce Building, No. 185 Jincheng Road, Xiaoshan District, Hangzhou, China
Factory
Puyang Town, Xiaoshan District, Hangzhou, China
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