The complete guide for X42 SSAW steel pipe

X42 SSAW (Spiral Submerged Arc Welded) steel pipe is a high-strength, low-alloy pipeline product manufactured in accordance with API 5L X42 standards, which owns excellent mechanical properties and structural performance, making it an ideal choice for oil and gas transmission, water transportation, and foundation piling. Here is a complete guide for X42 SSAW steel pipe.

Union Steel Industry Co., Ltd is professional SSAW steel pipe manufacturer, for more details, please contact:sales@union-steels.com

Key Features of X42 SSAW Steel Pipe

API 5L X42 grade: Engineered for the safe and efficient transport of high-pressure fluids

Spiral SAW welding process: Enhances load-bearing capacity and structural flexibility

Wide application range: Perfect for oil & gas pipelines, water mains, and piling in construction projects

Large-diameter availability: Supplied in various diameters and wall thicknesses to suit different project needs

Optional protective coatings: Can be coated internally and externally to resist corrosion in harsh environments

Standard compliance: Meets specifications of API 5L, GB/T 9711, ASTM A252, and other recognized standards

X42 SSAW Steel Pipe vs Other Steel Pipe Types

Choosing the most suitable pipe depends on your project's specific requirements for performance, budget, and longevity. Here's how X42 SSAW steel pipe compares with other commonly used steel pipes:

Why Choose X42 SSAW Steel Pipe?

Enhanced Strength and Toughness
Offers superior yield strength and impact resistance compared to API 5L Grade B (GRB), ensuring reliability in demanding environments.

Optimized for High-Pressure Transport
Ideal for transporting oil, gas, and water under high pressure across long distances.

Meets International Standards
Fully compliant with API 5L, GB/T 9711, and ASTM A252 specifications, ensuring global applicability and performance assurance.

Flexible Dimensions for Project Needs
Available in large diameters with customizable wall thicknesses to suit diverse engineering and infrastructure requirements.

X42 Spiral Welded Pipe Price Per Ton In 2025

The price of X42 Spiral Welded Pipes varies based on factors such as pipe diameter, wall thickness, steel grade, and coatings. Below is an estimated pricing chart for 2025:

Factors Affecting Price:

 Pipe Diameter & Wall Thickness – Larger and thicker pipes require more material.
 Coating Type – 3LPE, FBE, and other coatings increase costs.
 Bulk Orders – Large quantity orders receive better pricing.

X42 SSAW Steel Pipe Manufacturing Process & Quality Control

The manufacturing of X42 SSAW (Spiral Submerged Arc Welded) steel pipes strictly adheres to API 5L standards, ensuring superior durability, strength, and reliability. Below is a step-by-step overview of the production and quality control process:

1. Raw Material Selection

Premium API 5L X42-grade hot-rolled steel coils are selected, compliant with API 5L, GB/T 9711, or ASTM A252 standards.
Each coil undergoes chemical composition analysis to confirm consistent mechanical properties, such as yield strength and tensile strength.

2. Pipe Forming & Spiral Welding

The steel coil is continuously formed into a spiral shape using advanced forming machines.
Submerged arc welding (SAW) is applied along the seam to ensure full weld penetration, resulting in a strong, defect-free weld suitable for high-pressure pipelines.

3. Heat Treatment & Mechanical Testing

Pipes are heat-treated to enhance strength, toughness, and structural integrity.
Mechanical tests, including bending, impact, and load-bearing assessments, are conducted on each batch.

4. Hydrostatic Pressure Testing

Each pipe undergoes hydrostatic testing under high pressure to confirm its ability to withstand internal pressure without leaking or deforming.

5. Non-Destructive Testing (NDT)

Ultrasonic, radiographic (X-ray), and magnetic particle inspections are performed based on the pipe grade and application.
These tests detect internal and surface defects in the weld seam and pipe body.

6. Cutting & End Preparation

Pipes are precision-cut to specified lengths and beveled at the ends to facilitate field welding and installation.

7. Coating & Corrosion Protection

Various anti-corrosion coatings are available, including 3LPE, FBE, epoxy coal tar, and polyurethane, to extend the service life in harsh environments like marine or underground installations.

8. Final Inspection & Packaging

Each pipe is inspected, labeled, and bundled according to customer specifications.
Markings include batch numbers, specifications, and manufacturer information for full traceability and quality assurance.

Why X42 SSAW Steel Pipe Is Preferred

Engineered for high-pressure oil & gas transmission systems

Produced using advanced SAW welding and heat treatment technologies

Excellent resistance to bending, compression, and environmental stress

Customizable anti-corrosion coatings for harsh service conditions

Union Steel Industry Co., Ltd. implements strict quality control protocols to ensure every X42 SSAW steel pipe delivers consistent, high-performance results.

Applications of X42 SSAW Steel Pipe

X42 Spiral Weld Pipes are widely used in energy, infrastructure, and construction projects that require high-strength, durable pipes.

X42 Spiral Weld Pipe Coating & Anti-Corrosion Treatment

To ensure long-lasting performance, X42 Spiral Weld Pipes can be coated with various anti-corrosion treatments.