Large caliber reinforced epoxy coal tar anti-corrosion steel pipe

Large Caliber Reinforced Epoxy Coal Tar Anti-Corrosion Steel Pipe

Product Overview:
The large caliber reinforced epoxy coal tar anti-corrosion steel pipe is specifically engineered for heavy-duty, long-distance, and high-volume fluid transportation under corrosive underground or underwater conditions. Combining a robust steel structure with a reinforced epoxy coal tar coating, this pipe offers excellent mechanical strength and long-lasting corrosion resistance, making it ideal for demanding infrastructure and industrial applications.

Key Features:
This pipe is coated with a thick, reinforced blend of epoxy resin and coal tar pitch, forming a dense, impermeable layer that adheres tightly to the steel surface. The reinforcement layer may include glass fiber or additional epoxy thickness to enhance its resistance to mechanical damage and prolonged chemical exposure. The coating provides dual protection—preventing steel corrosion and resisting abrasion from soil and transported media.

Mechanical and Physical Properties:

• Pipe material: High-strength carbon steel (e.g., Q235, Q345, or L-series steel)

• Diameter range: Typically DN400–DN3000 or customized

• Coating thickness: 400–1000 μm depending on specifications

• Bonding strength: Strong adhesion to substrate, reducing risk of peeling or blistering

• Service life: 30+ years in standard buried or submerged environments

Applications:

• Long-distance water transmission pipelines

• Urban and industrial sewage drainage systems

• River and lake-crossing pipelines

• Power plant circulating water systems

• Marine engineering pipelines

• Large-scale industrial fluid transport (oil, chemical wastewater, etc.)

Advantages:

• Excellent corrosion resistance in aggressive soils and chemical environments

• Reinforced structure enhances durability and impact resistance during transport and installation

• Suitable for both buried and submerged conditions

• Reduces maintenance frequency and lifecycle costs

• High-pressure tolerance and long service life

• Customizable diameter, coating thickness, and end connections

Quality Assurance:
All pipes are subject to strict surface preparation (typically sandblasted to Sa2.5), uniform coating application, curing control, and multi-point inspection. Testing includes:

• Coating thickness and hardness verification

• Adhesion and impact resistance testing

• Holiday (pinhole) detection

• Hydraulic pressure testing

• Compliance with SY/T 0447, GB/T 23257, and other relevant standards