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 قوة عالية ومتانة وفعالية من حيث التكلفةمما يجعلها الخيار المفضل ل 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 لضمان high performance and reliability.

متطلبات التركيب الكيميائي

العنصر	Maximum Percentage (%)
الكربون (C)	0.30
المنجنيز (Mn)	1.4
الفوسفور (P)	0.035
الكبريت (S)	0.035

Mechanical Properties

الممتلكات	Grade A	Grade B	Grade C	Grade D	Grade E
قوة الخضوع (MPa)	≥ 205	≥ 240	≥ 260	≥ 315	≥ 350
قوة الشد (ميجا باسكال)	330 – 455	415 – 550	435 – 570	485 – 620	520 – 690
Elongation (%)	≥ 22	≥ 20	≥ 18	≥ 16	≥ 14

Dimensional Specifications

✔ نطاق القطر: 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.

الميزة	ASTM A139	ASTM A53	ASTM A252
التطبيق	Water pipelines, structural support	Low-pressure oil & gas, mechanical systems	Steel pipe piles for foundations
Material	Carbon steel	Carbon steel	Carbon steel
عملية التصنيع	Welded (ERW & SSAW)	Seamless & welded	Welded (SSAW & LSAW)
القوة	متوسط	Medium-High	عالية
التكلفة	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)

سعر 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:

سُمك الجدار (مم)	سعر الطن (بالدولار الأمريكي)
4 - 6 مم	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.

تقدم مجموعة أنابيب الصلب الحلزونية الحلزونية من تشانجتشو 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

نوع الطلاء	Best For	مقاومة التآكل	Temperature Resistance	المزايا
الإيبوكسي الملتصق بالاندماج (FBE)	خطوط أنابيب المياه والغاز	عالية	Up to 85°C	Strong adhesion, smooth surface, chemical resistance
بولي إيثيلين ثلاثي الطبقات (3LPE)	Underground pipelines	عالية جداً	Up to 85°C	Excellent corrosion protection, high impact resistance
3 طبقات من البولي بروبلين (3LPP)	Offshore pipelines	عالية جداً	Up to 140°C	High impact resistance, superior mechanical strength
Coal Tar Epoxy (CTE)	Marine environments	عالية جداً	Up to 100°C	Cost-effective, effective in high-moisture areas
Galvanized Coating	التطبيقات الهيكلية	معتدل	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

توفر مجموعة أنابيب الصلب الحلزونية الحلزونية من تشانغتشو customized coating solutions لمقابلة 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.)

تشانغتشو الحلزونية الفولاذ Pipes Group provides hassle-free export servicesضمان 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

المنطقة	التطبيقات الرئيسية	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

سؤال	الإجابة
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?

بالنسبة لـ high-quality ASTM A139 spiral pipes, شركة مجموعة تشانغتشو للأنابيب الفولاذية الحلزونية المحدودة هو 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

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