Overview of DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe

The DIN 30676 Coal Tar Epoxy (CTE) Coated Spiral Weld Pipe is a high-performance steel pipe designed for water transmission, wastewater systems, oil & gas pipelines, and industrial applications. The coal tar epoxy (CTE) coating provides exceptional corrosion resistance, chemical protection, and mechanical strength, making it ideal for underground pipelines, marine environments, and high-moisture applications.

Key Features of DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe

✔ Spiral Submerged Arc Welded (SSAW) steel pipe
✔ DIN 30676-compliant coal tar epoxy (CTE) coating
✔ High resistance to corrosion, impact, and soil stress
✔ Available in diameters from 6 inches to 144 inches (150mm to 3658mm)
✔ Complies with DIN 30676, API 5L, ASTM A252, and GB/T9711 standards
✔ Superior performance in harsh environmental conditions

This guide will cover manufacturing processes, applications, price trends, suppliers, and quality standards for DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes.

Top DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe Manufacturers in 2025

Selecting a reliable manufacturer ensures high-quality materials, precise coating applications, and compliance with DIN 30676 standards. Below are some of the leading manufacturers of DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes:

1. Cangzhou Spiral Steel Pipes Group Co., Ltd

✔ 27 years of experience in steel pipe manufacturing
✔ 13 production lines for Φ219–Φ3500mm spiral welded pipes
✔ Annual production capacity: 400,000 tons
✔ ISO 9001, API 5L, ASTM-certified DIN 30676 Coal Tar Epoxy Coated Pipes
✔ Custom coatings for water, oil & gas, and industrial pipelines

2. EUROPIPE (Germany)

A leading European manufacturer of large-diameter spiral welded pipes, specializing in DIN 30676 coatings for oil & gas transmission.

3. Jindal SAW Ltd (India)

Provides high-performance spiral pipes with DIN 30676 coal tar epoxy coatings for water transmission, oil & gas, and industrial applications.

4. Nippon Steel (Japan)

A global leader in high-strength, corrosion-resistant spiral welded pipes for marine, water, and industrial applications.

5. Tenaris (Italy)

Manufactures premium-quality spiral welded pipes with DIN 30676 coal tar epoxy coatings for onshore and offshore pipeline projects.

Each of these manufacturers ensures strict compliance with DIN 30676 standards, guaranteeing high durability and corrosion resistance.

DIN 30676 Coal Tar Epoxy Coated Pipe vs Other Coated Spiral Weld Pipes

Choosing the right coating type depends on project requirements, cost, and durability. Below is a comparison between DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe and other coated pipes:

Feature	DIN 30676 Coal Tar Epoxy Coated Pipe	DIN 30670 PE Coated Pipe	AWWA C214 3LPE Coated Pipe
Coating Type	Coal Tar Epoxy (CTE)	Polyethylene (PE)	Three-layer Polyethylene (3LPE)
Corrosion Resistance	Very High	High	Very High
Mechanical Protection	High	High	Very High
Best Use Case	Underground pipelines, water transmission	Underground pipelines, oil & gas transmission	High-pressure and offshore applications
Lifespan	50+ years	50+ years	50+ years
Temperature Resistance	Up to 100°C	Up to 85°C	Up to 85°C
Cost	Moderate	Slightly higher	Higher

Why Choose DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe?

✔ Excellent corrosion and soil stress resistance
✔ Long-lasting protection in buried and marine environments
✔ Cost-effective alternative for water and oil & gas transmission

DIN 30676 Spiral Weld Pipe Price Per Ton in 2025

The price of DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes varies based on factors such as pipe diameter, wall thickness, steel grade, and coating thickness. Below is an estimated pricing chart for 2025:

Wall Thickness (mm)	Steel Grade	Price Per Ton (USD)
6 – 10 mm	API 5L X42 – X65	4,500−4,500 – 4,500−6,500
12 – 18 mm	API 5L X65 – X70	5,800−5,800 – 5,800−7,800
20 – 40 mm	API 5L X70 – X80	7,000−7,000 – 7,000−10,000

Factors Affecting Price:

✔ Pipe Diameter & Wall Thickness – Larger and thicker pipes require more material.
✔ Coating Type – Coal tar epoxy coating thickness impacts cost.
✔ Bulk Orders – Large quantity orders receive better pricing.

Cangzhou Spiral Steel Pipes Group offers high-quality DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes at competitive prices.

DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe Manufacturing Process & Quality Control

How Are DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes Manufactured?

The manufacturing process of DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes follows strict DIN, API 5L, ASTM A252, and GB/T9711 standards to ensure high durability, corrosion resistance, and mechanical protection. Below is a step-by-step breakdown of the production process:

1. Raw Material Selection

• High-quality steel coils (API 5L, ASTM A252, GB/T9711) are carefully selected to meet chemical and mechanical composition requirements.
• The steel undergoes chemical and mechanical testing to verify yield strength, tensile strength, and impact resistance.

2. Pipe Forming & Spiral Welding

• The steel plates are rolled into a spiral shape using advanced forming machines.
• The edges are submerged arc welded (SAW) using double-sided automatic welding to ensure defect-free, high-strength weld seams.
• This welding method ensures full penetration and structural stability, making it ideal for water transmission, oil & gas, and industrial applications.

3. Hydrostatic Pressure Testing

• Each pipe undergoes high-pressure hydrostatic testing to verify leak-proof and structural reliability.

4. Ultrasonic & Radiographic Testing

• Non-destructive testing (NDT) is performed to detect internal or external defects in the weld seam.
• Ultrasonic, X-ray, and magnetic particle testing are conducted based on pipe grade and project requirements.

5. Surface Preparation

• The pipe surface is thoroughly cleaned by sandblasting or shot blasting to remove rust, scale, and contaminants.
• Proper surface preparation ensures better adhesion of the coal tar epoxy coating.

6. Coal Tar Epoxy (CTE) Coating Application (DIN 30676)

• Preheating: The pipe is preheated to the required temperature to ensure proper adhesion of the epoxy.
• Primer Application: A primer layer is applied to enhance the bond between the steel surface and the coal tar epoxy.
• Coal Tar Epoxy Layer Application:
  • A thick layer of coal tar epoxy is applied using spray or dip-coating methods.
  • The coating is evenly distributed to provide full surface coverage.
  • The thickness is controlled based on project specifications.
• Curing Process: The coated pipe is heated to a specific temperature to allow the epoxy to cure and harden, forming a durable protective layer.

7. Beveling & Cutting

• Pipes are cut into required lengths using automated machinery.
• The pipe ends are beveled for easy welding and connection.

8. Final Inspection & Packaging

• Pipes are marked, inspected, and bundled according to customer requirements.
• Each pipe is labeled with batch numbers, specifications, and manufacturer details for full traceability.

Why DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes Are Preferred?

✔ Designed for high-pressure water and oil & gas pipeline systems
✔ Manufactured with advanced welding and coating processes
✔ High resistance to corrosion, abrasion, and environmental stress
✔ Long-lasting protection in buried and marine environments

Cangzhou Spiral Steel Pipes Group Co., Ltd follows strict quality control procedures to ensure high-performance DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes.

DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipe Applications & Industry Uses

Where Are DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes Used?

DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes are widely used in municipal water infrastructure, oil & gas pipelines, industrial projects, and marine environments.

Industry	Application	Why DIN 30676 Spiral Weld Pipe?
Water Transmission	Municipal water supply, potable water pipelines	Leak-proof, corrosion-resistant, and long service life
Wastewater Systems	Sewage treatment plants, drainage pipelines	High-strength, durable, and resistant to chemical exposure
Industrial Pipelines	Power plants, chemical processing, and desalination plants	Handles high pressures and corrosive environments
Oil & Gas	Crude oil, natural gas transmission pipelines	Superior chemical resistance and long lifespan
Marine & Offshore	Coastal water transmission systems, offshore desalination plants	Resistant to seawater and extreme marine conditions

Why DIN 30676 Spiral Weld Pipes Are Ideal for Underground & Marine Applications?

✔ High resistance to chemical corrosion and environmental exposure
✔ Available in large diameters for municipal and industrial projects
✔ Cost-effective solution for long-distance transmission pipelines

Cangzhou Spiral Steel Pipes Group supplies customized DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes for municipal water supply, oil & gas pipelines, industrial applications, and marine projects.

Final Thoughts

For high-quality DIN 30676 Coal Tar Epoxy Coated Spiral Weld Pipes, Cangzhou Spiral Steel Pipes Group Co., Ltd is your best choice in 2025!

Need a quote or more technical details? Contact Cangzhou Spiral Steel Pipes Group today!