Introduction to ASTM A139 Spiral Pipe

ASTM A139 spiral pipe is a welded steel pipe designed for low- and medium-pressure applications, including water transmission, structural support, and industrial systems. Manufactured using the spiral submerged arc welding (SSAW) process, ASTM A139 pipes offer high strength, durability, and cost-effectiveness, making them a preferred choice for large-diameter pipelines.

Unlike other steel pipe standards such as ASTM A53 or API 5L, ASTM A139 is primarily used for non-critical applications where high-pressure resistance is not required. It is widely used in municipal water pipelines, drainage systems, bridge structures, and industrial construction.

Why Choose ASTM A139 Spiral Pipe?

✔ Ideal for low- and medium-pressure applications
✔ Cost-effective alternative to seamless pipes
✔ Large-diameter availability for infrastructure projects
✔ Easy to weld and fabricate
✔ Available in multiple coatings for corrosion resistance

In this guide, we will cover ASTM A139 spiral pipe specifications, pricing, manufacturing process, key suppliers, and comparisons with other steel pipe standards.

ASTM A139 Spiral Pipe Specifications & Standards

ASTM A139 spiral pipes must meet strict chemical, mechanical, and dimensional requirements to ensure high performance and reliability.

Chemical Composition Requirements

Element	Maximum Percentage (%)
Carbon (C)	0.30
Manganese (Mn)	1.4
Phosphorus (P)	0.035
Sulfur (S)	0.035

Mechanical Properties

Property	Grade A	Grade B	Grade C	Grade D	Grade E
Yield Strength (MPa)	≥ 205	≥ 240	≥ 260	≥ 315	≥ 350
Tensile Strength (MPa)	330 – 455	415 – 550	435 – 570	485 – 620	520 – 690
Elongation (%)	≥ 22	≥ 20	≥ 18	≥ 16	≥ 14

Dimensional Specifications

✔ Diameter Range: Φ219mm – Φ3500mm
✔ Wall Thickness: 4mm – 25mm
✔ Pipe Length: 6m, 9m, 12m, or customized
✔ End Finish: Plain end, beveled end, or flanged

Cangzhou Spiral Steel Pipes Group manufactures high-quality ASTM A139 spiral pipes that comply with international standards.

ASTM A139 Spiral Pipe vs. ASTM A53 & A252: Key Differences

ASTM A139 is commonly used for structural and water transmission applications, whereas ASTM A53 and ASTM A252 serve higher-pressure and piling applications.

Feature	ASTM A139	ASTM A53	ASTM A252
Application	Water pipelines, structural support	Low-pressure oil & gas, mechanical systems	Steel pipe piles for foundations
Material	Carbon steel	Carbon steel	Carbon steel
Manufacturing Process	Welded (ERW & SSAW)	Seamless & welded	Welded (SSAW & LSAW)
Strength	Medium	Medium-High	High
Cost	More affordable	Higher due to pressure requirements	Higher due to structural strength

Which One Should You Choose?

✔ For low-to-medium pressure water pipelines → ASTM A139 is the best choice
✔ For low-pressure oil & gas applications → ASTM A53 is more suitable
✔ For structural piling and foundations → ASTM A252 is recommended

Cangzhou Spiral Steel Pipes Group manufactures various steel pipe grades to meet different project requirements.

ASTM A139 Spiral Pipe Price Per Ton (2025)

The price of ASTM A139 spiral pipes depends on factors like diameter, wall thickness, steel grade, and coatings. Below is an estimated wholesale price per ton for 2025:

Wall Thickness (mm)	Price Per Ton (USD)
4 – 6 mm	750−750 – 750−1,000
8 – 12 mm	1,000−1,000 – 1,000−1,250
14 – 25 mm	1,200−1,200 – 1,200−1,600

Factors Affecting Pricing

✔ Steel Grade: Higher strength grades (D, E) cost more.
✔ Customization: Coatings, special dimensions, and end finishes increase the price.
✔ Order Quantity: Bulk purchases lower costs per ton.
✔ Shipping Costs: Prices vary depending on destination and freight charges.

Cangzhou Spiral Steel Pipes Group offers competitive pricing for bulk ASTM A139 spiral pipe orders.

ASTM A139 Spiral Pipe Coating & Corrosion Protection

Why Is Coating Important for ASTM A139 Spiral Pipes?

ASTM A139 spiral pipes are often used in water transmission, drainage systems, and structural applications. These pipes may be exposed to corrosive environments, moisture, extreme temperatures, and chemical exposure, making protective coatings essential for long-term performance.

Applying a protective coating helps to:
✔ Prevent corrosion and rust formation
✔ Extend the lifespan of the pipeline
✔ Reduce maintenance costs over time
✔ Enhance mechanical and chemical resistance

Common Coating Types for ASTM A139 Spiral Pipes

Coating Type	Best For	Corrosion Resistance	Temperature Resistance	Advantages
Fusion Bonded Epoxy (FBE)	Water & gas pipelines	High	Up to 85°C	Strong adhesion, smooth surface, chemical resistance
3-Layer Polyethylene (3LPE)	Underground pipelines	Very High	Up to 85°C	Excellent corrosion protection, high impact resistance
3-Layer Polypropylene (3LPP)	Offshore pipelines	Very High	Up to 140°C	High impact resistance, superior mechanical strength
Coal Tar Epoxy (CTE)	Marine environments	Very High	Up to 100°C	Cost-effective, effective in high-moisture areas
Galvanized Coating	Structural applications	Moderate	Up to 60°C	Affordable, suitable for general-purpose use

Choosing the Right Coating for Your Project

✔ For underground pipelines → 3LPE or 3LPP is best
✔ For offshore applications → 3LPP or Coal Tar Epoxy works well
✔ For municipal and industrial water pipelines → FBE provides excellent protection

Cangzhou Spiral Steel Pipes Group provides customized coating solutions to meet specific project requirements.

How to Import ASTM A139 Spiral Pipes from China?

Step-by-Step Guide to Importing ASTM A139 Spiral Pipes

✔ Step 1: Choose a Reliable Supplier

• Verify ASTM A139, ISO, and API certifications
• Check production capacity and quality standards
• Request product samples and factory inspections

✔ Step 2: Request a Quotation

• Provide pipe specifications (diameter, thickness, steel grade, coating type)
• Get pricing for FOB, CIF, or EXW terms

✔ Step 3: Negotiate Terms & Finalize Order

• Discuss payment terms (T/T, L/C, etc.)
• Confirm production lead time and delivery schedule

✔ Step 4: Quality Inspection & Testing

• Arrange for third-party inspection (SGS, BV, etc.)
• Ensure compliance with contract specifications

✔ Step 5: Shipping & Customs Clearance

• Work with freight forwarders for smooth logistics
• Submit necessary customs documents (Bill of Lading, Packing List, Commercial Invoice, etc.)

Cangzhou Spiral Steel Pipes Group provides hassle-free export services, ensuring timely delivery worldwide.

Global Market Demand for ASTM A139 Spiral Pipes

Why Are ASTM A139 Spiral Pipes in High Demand?

✔ Growing Infrastructure Development – Demand for municipal water pipelines and industrial drainage systems is rising.
✔ Water Transmission Projects – Governments are investing in large-scale water supply pipelines for cities and rural areas.
✔ Industrial Growth – ASTM A139 pipes are widely used in construction, wastewater treatment, and structural support.
✔ Cost-Effective Alternative – Compared to seamless pipes, spiral welded pipes offer lower costs for large-scale projects.

Top Importing Regions for ASTM A139 Spiral Pipes

Region	Key Applications	Demand (%)
North America (USA, Canada)	Water transmission, industrial piping	35%
Europe (Germany, UK, France)	Infrastructure, industrial projects	22%
Middle East (UAE, Saudi Arabia)	Water desalination, municipal projects	18%
Southeast Asia (India, Indonesia)	Construction, drainage systems	15%
Africa & Latin America	Mining, water supply, energy	10%

Cangzhou Spiral Steel Pipes Group exports high-quality ASTM A139 spiral pipes to over 50 countries worldwide.

Frequently Asked Questions (FAQ) About ASTM A139 Spiral Pipes

Question	Answer
What is ASTM A139 spiral pipe used for?	Water transmission, drainage systems, bridge structures, and industrial applications.
What is the difference between ASTM A139 and A53?	ASTM A139 is used for low-to-medium pressure applications, while ASTM A53 is designed for oil, gas, and mechanical systems.
Can ASTM A139 pipes be custom-coated?	Yes, available coatings include 3LPE, 3LPP, FBE, and Coal Tar Epoxy.
What is the minimum order quantity (MOQ) for ASTM A139 pipes?	MOQ depends on the supplier, but bulk orders (50+ tons) receive better pricing.
How long does it take to manufacture ASTM A139 pipes?	Typically 15-45 days, depending on order size and specifications.
What are the payment terms for importing ASTM A139 pipes?	T/T (Telegraphic Transfer), L/C (Letter of Credit), and D/P (Documents Against Payment) are commonly used.
What sizes are available for ASTM A139 spiral pipes?	Diameters from Φ219mm to Φ3500mm, thicknesses from 4mm to 25mm.
Do ASTM A139 pipes require third-party inspection?	Yes, third-party testing and certification are recommended for ASTM A139 pipes.
Can Cangzhou Spiral Steel Pipes Group export to my country?	Yes, we export to over 50 countries worldwide.

Final Thoughts: Why Choose Cangzhou Spiral Steel Pipes Group for ASTM A139 Spiral Pipes?

For high-quality ASTM A139 spiral pipes, Cangzhou Spiral Steel Pipes Group Co., Ltd is your best supplier in 2025!

✔ 27+ years of experience in SSAW pipe manufacturing
✔ 400,000 tons annual production capacity
✔ Certified by ASTM, API 5L, GB/T, ISO 9001
✔ Custom sizes, coatings, and global shipping
✔ Competitive pricing for bulk orders

📞 Need a bulk quote or technical consultation? Contact Cangzhou Spiral Steel Pipes Group today!