Large diameter plastic coated sewage pipe

Large Diameter Plastic-Coated Sewage Pipe

Product Overview:
The large diameter plastic-coated sewage pipe is designed to meet the demands of modern sewage and drainage systems, combining the structural strength of steel with the corrosion resistance of plastic. It provides a long-lasting, low-maintenance solution for the safe and efficient transport of wastewater and industrial effluents in large-volume applications.

Key Features:
This pipe features a steel body internally and/or externally coated with a chemically resistant plastic layer such as polyethylene (PE), epoxy resin, or polyvinyl chloride (PVC). The coating prevents corrosion caused by acidic and alkaline media, while also improving hydraulic performance with a smooth, non-stick interior surface that reduces clogging and sediment buildup.

Mechanical and Physical Properties:
The steel core delivers high compressive strength, impact resistance, and load-bearing capacity—essential for large-diameter underground pipelines. The plastic coating ensures excellent sealing, resistance to chemical erosion, and reduced friction for improved flow rates.

Applications:

• Municipal and industrial sewage pipelines

• Wastewater treatment plant discharge systems

• Stormwater drainage systems

• Chemical and mining industry waste transport

• Underground pipelines requiring corrosion resistance and large flow capacity

Advantages:

• High strength-to-weight ratio suitable for large-scale installations

• Outstanding corrosion resistance against sewage and aggressive fluids

• Smooth internal surface reduces flow resistance and blockage

• Long service life with low maintenance requirements

• Suitable for trenchless and traditional buried installations

• Available in a range of diameters and coating types

Quality Assurance:
Each pipe undergoes rigorous quality control including surface preparation, coating uniformity inspection, adhesion testing, hydraulic testing, and resistance to chemical corrosion. Products conform to national standards for plastic-lined steel pipes used in drainage and wastewater systems.