AWWA C210 Standard Internal Epoxy Coated LSAW Pipe 24 Inch for Waste Water

Engineered to withstand the aggressive chemical and physical demands of municipal and industrial effluent networks, this AWWA C210 Standard Internal Epoxy Coated LSAW Pipe is the premier choice for heavy-duty wastewater transmission. Utilizing a large 24-inch nominal diameter (609.6mm OD) Longitudinal Submerged Arc Welded (LSAW) steel base, the pipe provides superior structural strength and uniform geometry to handle high external soil overburdens and internal operating pressures.
The interior of the pipe is lined with a high-build, chemical-resistant liquid epoxy in strict compliance with the AWWA C210 standard. This specialized lining creates a smooth, impermeable barrier that prevents corrosion from biogenic sulfuric acid, hydrogen sulfide gas, and corrosive industrial chemicals. Simultaneously, the heavy-duty coating resists wear from suspended solids, sand, and organic silt, ensuring long-term, low-maintenance operations in subterranean sewer force mains and drainage systems.

Features & Advantages

Elite Biogenic Acid Protection: Provides a thick, chemically cross-linked thermosetting barrier that successfully resists hydrogen sulfide (H2S) and sulfuric acid generated by anaerobic bacteria in stagnant sewage.

Superior Abrasion Resistance: Specially formulated to withstand the constant mechanical wear and friction from sand, gravel, and solid debris carried in municipal and industrial wastewater streams.

High-Strength LSAW Base Pipe: Straight-seam submerged arc welded steel offers outstanding ring stiffness and precise dimensional tolerances, making it ideal for deep burial under heavy traffic roadways.

Anti-Clogging Smooth Interior: The glass-smooth internal liquid epoxy finish prevents organic slime adhesion, eliminates mineral scaling, and reduces friction loss to optimize gravity flow and pumping efficiency.

Technical Specifications

Specification Item	Detailed Description
Product Name	AWWA C210 Internal Epoxy Lined LSAW Steel Pipe
Lining Standard	AWWA C210 (Liquid-epoxy coatings and linings for steel water pipe)
Base Pipe Standard	API 5L Grade B, X42, X52, ASTM A252 (Longitudinal Welded Line Pipe)
Manufacturing Process	LSAW (Longitudinal Submerged Arc Welding - JCOE process)
Nominal Pipe Size (NPS)	24 Inch (DN600)
Outer Diameter (OD)	24.00 inches (609.6 mm)
Wall Thickness (WT)	Typical 9.53 mm (0.375 inches) or Schedule 40 (14.27 mm / 0.562 inches)
Internal Lining Type	High-build, two-part liquid epoxy
Coating Thickness	Minimum 400 microns (16 mils) Dry Film Thickness (DFT) for heavy wastewater environments
Pipe Ends	Beveled ends (30°~35°) with factory bare steel cutbacks for field joint welding
Standard Length	11.8m, 12.0m, or customized as per container transport limits

Product Applications

Municipal Wastewater Mains: Heavy-duty gravity sewer lines and pressurized sewer force mains.

Industrial Effluent Transmission: Underground routing of process chemical waste, factory discharges, and acidic runoffs.

Wastewater Treatment Plants (WWTP): High-capacity internal process piping, sludge lines, and effluent outfall pipelines.

Sewer Siphons & Drainage Crossings: Subterranean sewer lines routed under rivers, railways, or highway networks.

Rigorous Quality Control & Manufacturing Process

Our 24-inch LSAW wastewater pipes undergo an uncompromising quality control and coating process:

LSAW JCOE Manufacturing: High-grade steel plates are cold-formed and welded inside and out. The straight weld seam is verified with 100% Ultrasonic Testing (UT) and Radiographic (X-ray) inspection to ensure zero defects.

Internal Surface Prep to SA 2.5: The steel interior undergoes aggressive abrasive shot blasting to SA 2.5 cleanliness, creating a near-white metal finish with a precise micro-roughness profile essential for chemical bonding.

High-Build Liquid Epoxy Spraying: Automated internal spray booms apply multi-pass liquid epoxy coating to the rotating pipe. This ensures uniform coverage and achieves the target Dry Film Thickness (DFT) of at least 400 microns.

Dielectric Integrity Testing: Following controlled curing, 100% dry film thickness checks and high-voltage Holiday testing are executed to guarantee a completely pinhole-free internal barrier.

Frequently Asked Questions (FAQ)

Q1: Why is the AWWA C210 standard specified for wastewater pipelines?

A: While AWWA C210 originated as a drinking water pipeline standard, its strict guidelines for high-build liquid epoxy are ideal for wastewater. The standard mandates rigorous adhesion, chemical resistance, and thickness testing, resulting in a thick, durable 400-micron barrier that provides excellent protection against biochemical attack and municipal sewer wear.

Q2: What is the benefit of LSAW over ERW or spiral welded pipes for 24-inch wastewater lines?

A: LSAW (Longitudinal Submerged Arc Welded) pipes have only a single straight weld seam and undergo cold expansion during manufacturing. This provides exceptional dimensional roundness, uniform wall thickness, and low residual stress. This structural integrity is critical for heavy-load subterranean sewage networks subjected to deep burial and heavy road traffic.

Q3: How does the internal liquid epoxy protect the steel pipe from biogenic sulfuric acid?

A: Wastewater generates hydrogen sulfide (H2S) gas, which is converted to sulfuric acid by sulfur-oxidizing bacteria on the pipe walls. This acid quickly destroys bare steel and concrete. Our AWWA C210 compliant liquid epoxy forms a highly cross-linked, chemically inert polymer barrier that prevents the acid from reaching the steel substrate, ensuring complete isolation.

Q4: How do you weld and protect the joints in the field?

A: The pipes are delivered with precision-beveled ends and standard factory bare steel cutbacks (50mm–100mm). After field butt-welding and weld inspection, the joint area is thoroughly cleaned. Specialized joint-coating technicians apply a matching high-build liquid epoxy directly to the inner weld seam to restore continuous, seamless internal protection.