Overview

Q235B Spiral Weld Pipe is a high-strength, low-carbon steel pipe widely used in construction, water transmission, piling, and oil & gas transportation. It is manufactured through submerged arc welding (SAW) in a spiral formation, ensuring high durability, flexibility, and cost-effectiveness.

Key Features

✔ Made from Q235B steel, known for excellent weldability and strength
✔ Spiral welding process enhances structural integrity
✔ Suitable for water pipelines, piling, structural applications, and oil & gas transport
✔ Available in large diameters and various thicknesses
✔ Can be coated for corrosion resistance in harsh environments
✔ Complies with GB/T9711, API 5L, ASTM A252, and other international standards

This guide will cover everything about Q235B Spiral Weld Pipes, including manufacturing processes, specifications, applications, price trends, and suppliers.

Top Q235B Spiral Weld Pipe Manufacturers in 2025

Choosing a trusted manufacturer ensures high-quality materials, precision welding, and compliance with global standards. Below are some of the leading Q235B Spiral Weld Pipe manufacturers:

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 Q235B spiral welded pipes
✔ Custom coatings: 3LPE, FBE, and Epoxy Coal Tar

2. Baosteel Group (China)

A leading steel producer specializing in high-strength Q235B spiral welded pipes for various applications.

3. Tianjin Steel Pipe Co. (China)

A major supplier of Q235B spiral welded pipes for construction, piling, and pipeline projects.

4. Jindal SAW Ltd (India)

Provides high-performance Q235B spiral pipes for infrastructure development and industrial applications.

5. Nippon Steel (Japan)

A global leader in high-strength, corrosion-resistant spiral welded pipes for marine, oil & gas, and structural uses.

Each of these manufacturers ensures strict compliance with industry standards, guaranteeing high durability and performance.

Q235B Spiral Weld Pipe vs Other Steel Pipes

Selecting the right pipe type depends on application, cost, and durability. Below is a comparison between Q235B Spiral Weld Pipe and other steel pipes:

Feature	Q235B Spiral Weld Pipe	Seamless Steel Pipe	ERW Steel Pipe	LSAW Steel Pipe
Manufacturing Process	Submerged Arc Welding (SAW)	No welding (extruded from billets)	Electric Resistance Welding (ERW)	Longitudinal Submerged Arc Welding (LSAW)
Strength	High	Very High	Medium-High	Very High
Diameter Range	Medium to Large	Small to Medium	Small to Medium	Medium to Large
Wall Thickness	Medium to Thick	Thin to Medium	Thin to Medium	Medium to Thick
Cost	Cost-effective	Expensive	Affordable	Higher than Spiral Weld
Best Use Case	Water transmission, piling, oil & gas, structural applications	High-pressure pipelines, precision applications	Water, gas, and structural pipelines	Oil & gas pipelines, pressure applications

Why Choose Q235B Spiral Weld Pipe?

✔ Best for water transmission, piling, and structural applications
✔ Complies with GB/T9711, API 5L, and ASTM A252 standards
✔ Available in large diameters and customizable thicknesses
✔ Durable and cost-effective compared to seamless pipes

Q235B Spiral Weld Pipe Price Per Ton in 2025

The price of Q235B Spiral Weld Pipes varies based on factors such as pipe diameter, wall thickness, steel grade, and coatings. Below is an estimated pricing chart for 2025:

Pipe Diameter (mm)	Wall Thickness (mm)	Steel Grade	Price Per Ton (USD)
219 – 600	6 – 10	Q235B	900−900 – 900−1,400
610 – 1200	8 – 14	Q235B	1,300−1,300 – 1,300−1,900
1220 – 1800	10 – 18	Q235B	1,800−1,800 – 1,800−2,600
2000 – 3500	12 – 25	Q235B	2,500−2,500 – 2,500−3,500

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.

Cangzhou Spiral Steel Pipes Group offers high-quality Q235B Spiral Weld Pipes at competitive prices.

Q235B Spiral Weld Pipe Manufacturing Process & Quality Control

How Are Q235B Spiral Weld Pipes Manufactured?

The manufacturing process of Q235B Spiral Weld Pipes involves several key steps to ensure high durability, strength, and precision. Below is a step-by-step breakdown of how these pipes are produced:

1. Raw Material Selection

• High-quality Q235B hot-rolled steel coils are selected based on GB/T9711, API 5L, or ASTM A252 standards.
• The steel undergoes chemical composition analysis to ensure uniform mechanical properties such as yield strength and tensile strength.

2. Pipe Forming & Spiral Welding

• The steel plate is formed into a spiral shape using specialized rolling machines.
• The edges are submerged arc welded (SAW) to create a continuous, high-strength weld seam.
• The welding process ensures full penetration and defect-free welds.

3. Heat Treatment & Strength Testing

• Pipes undergo heat treatment to improve tensile strength and load-bearing capacity.
• Each pipe is tested for bending strength, impact resistance, and structural integrity.

4. Hydrostatic Pressure Testing

• Each pipe undergoes high-pressure water testing to verify leak-proof and structural performance.

5. 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 used based on pipe grade and project requirements.

6. Beveling & Cutting

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

7. Coating & Anti-Corrosion Treatment

• Pipes can be coated with 3LPE, FBE, Epoxy Coal Tar, or Polyurethane coatings to enhance corrosion resistance.

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 Q235B Spiral Weld Pipes Are Preferred?

✔ Designed for structural, water transmission, and oil & gas applications
✔ Manufactured with advanced welding and heat treatment processes
✔ High resistance to bending, compression, and environmental exposure
✔ Custom coatings available to extend lifespan in marine and underground conditions

Cangzhou Spiral Steel Pipes Group Co., Ltd follows strict quality control procedures to ensure high-performance Q235B Spiral Weld Pipes.

Q235B Spiral Weld Pipe Applications & Industry Uses

Where Are Q235B Spiral Weld Pipes Used?

Q235B Spiral Weld Pipes are widely used in construction, infrastructure, and oil & gas projects that require high-strength, durable pipes.

Industry	Application	Why Q235B Spiral Weld Pipe?
Water Transmission	Potable water and sewage pipelines	Leak-proof, durable, and safe for drinking water
Structural Applications	Building columns, bridge supports	High-strength, cost-effective, and corrosion-resistant
Oil & Gas Transportation	Crude oil, natural gas, and fuel pipelines	Complies with API 5L standards for high-pressure transport
Pile Foundations	Deep foundation support for bridges and buildings	High load-bearing capacity and seismic resistance
Marine & Offshore	Subsea pipelines, offshore drilling platforms	Resistant to seawater and extreme marine conditions

Why Q235B Spiral Weld Pipes Are Ideal for Structural & Water Transmission Projects?

✔ High resistance to corrosion and environmental exposure
✔ Available in long lengths for pipeline and foundation applications
✔ Can be coated with 3LPE or Epoxy Coal Tar for extended durability

Cangzhou Spiral Steel Pipes Group supplies customized Q235B Spiral Weld Pipes for water projects, structural applications, oil & gas transmission, and deep foundation piling.

Q235B Spiral Weld Pipe Coating & Anti-Corrosion Treatment

To ensure long-lasting performance, Q235B Spiral Weld Pipes can be coated with various anti-corrosion treatments.

Coating Type	Corrosion Resistance	Best Applications
3LPE Coating	Very High	Water pipelines, oil & gas transport
FBE (Fusion Bonded Epoxy) Coating	High	Underground pipelines, structural applications
Epoxy Coal Tar Coating	Excellent	Industrial pipelines & marine piling
Polyurethane Coating	High	Offshore drilling & marine structures

Why Coating is Essential for Q235B Spiral Weld Pipes?

✔ Prevents rust and corrosion in marine and underground environments
✔ Reduces maintenance costs and extends service life
✔ Enhances resistance against chemicals, seawater, and extreme temperatures

Cangzhou Spiral Steel Pipes Group provides custom coating services to meet industry-specific requirements.

Q235B Spiral Weld Pipe Suppliers & Exporters

If you are looking to import Q235B Spiral Weld Pipes, working with a reliable supplier ensures quality, competitive pricing, and timely delivery.

Top Chinese Exporters of Q235B Spiral Weld Pipes

Company Name	Location	Annual Production Capacity
Cangzhou Spiral Steel Pipes Group Co., Ltd	Hebei, China	400,000 tons
Baosteel Group	Shanghai, China	500,000+ tons
Tianjin Steel Pipe Co.	Tianjin, China	300,000 tons

Why Choose Cangzhou Spiral Steel Pipes Group for Q235B Spiral Weld Pipes?

✔ 27 years of experience in steel pipe manufacturing
✔ ISO 9001, API 5L, and ASTM-certified products
✔ 13 production lines, covering diameters from 219mm to 3500mm
✔ Custom coatings and anti-corrosion treatments available
✔ Strong export network to North America, Europe, and Asia

For high-quality Q235B Spiral Weld Pipes, Cangzhou Spiral Steel Pipes Group Co., Ltd is a trusted supplier.

FAQ: Q235B Spiral Weld Pipe

Question	Answer
What is Q235B Spiral Weld Pipe used for?	Used for water pipelines, piling, structural applications, and oil & gas transport.
How does Q235B compare to other steel grades?	Q235B is a cost-effective, high-strength steel with excellent weldability.
What is the lifespan of a Q235B Spiral Weld Pipe?	40-80 years, depending on coating and environmental exposure.
Who is the best supplier?	Cangzhou Spiral Steel Pipes Group Co., Ltd is a leading supplier with ISO & API-certified products.
What is the price per ton in 2025?	Prices range from 900to900 to 900to3,500 per ton, depending on size and steel grade.
Can Q235B Spiral Weld Pipes be used for high-pressure applications?	Yes, but thicker wall pipes are recommended for high-pressure use.
What coatings are available for Q235B Spiral Weld Pipes?	3LPE, FBE, Epoxy Coal Tar, and Polyurethane coatings.
Are Q235B Spiral Weld Pipes suitable for offshore use?	Yes, with proper anti-corrosion coating, they are widely used in marine projects.

Final Thoughts

Q235B Spiral Weld Pipes are essential for water pipelines, piling, structural applications, and oil & gas transmission. They offer high strength, durability, and cost-effectiveness for various industries.

For premium quality Q235B 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!