A671 Carbon Steel EFW pipe

A671 carbon steel EFW (Electric Fusion Welded) pipe is an electric welded carbon steel pipe that meets ASTM A671 standards. A wide range of grades are available, such as ASTM A671 CC60/ CC65/ CC70 / CD80. Here one-stop service for A671 steel pipes. Large inventory, own production line, support a variety of testing and customized services. Our steel pipes have been successfully exported to more than 60 countries.

A671 carbon steel EFW pipe is a seamless or welded pipe made by joining carbon steel sheets through an arc welding process. The ASTM A671 standard specifies the requirements for manufacturing high-temperature and normal-temperature electric welded carbon steel pipes, which are suitable for high-temperature applications that transport liquids, gases, and solids.

Wall ThicknessSchedule 20 To Schedule XXS
Outer Diameter12-64 inch
Length6m,12m, or customized
Custom SizeAvailable

Gnee has a large inventory of A671 carbon steel EFW pipes, which allows to meet customers’ needs and deliver products in a timely manner. This avoids delays in project progress due to shortages. Our inventory management system is highly precise, ensuring inventory accuracy and real-time updates. Whether it is mass production or individual customized needs, Gnee can provide quick responses, which brings convenience and confidence to customers.

7 days for stock goods/ within 30-50 days / depending on your order quantity

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D.

  • Bundles
  • Wooden Boxes
  • Crates
  • Packaging as customer’s requirements

Available, welcome to consult

A) Full Service: Pre, In, After
B) 15+ Years Exp.Global Export
C) 365 Days Always Online
D) Large-scale Reserve
E) Diversified Logistics Solution

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ASTM A671 Carbon Steel EFW pipe
  • Provide wide sizes from small to large, for example 12mm, 15mm,18mm and more. Also can be customized according to customer requirements.
  • Provide abundant grades: ASTM A671 CC60/ CC65/ CC70 / CD80 etc.

Gnee have a wide range sizes, such as 5 inch /6 inch /2 inch and more for you to choose.


With excellent mechanical properties of A671 carbon steel EFW pipe, it is widely used in the following:

  • Oil and Gas Industry
  • Chemical Industry
  • Power Plant
  • Nuclear Power Industry
  • Other Industrial Area

A671 carbon steel EFW pipe grades: ASTM A671 CC60/ ASTM A671 CC65/ASTM A671 CC70 and more grades waiting for you to choose.

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Specifications Of ASTM A671 Carbon Steel EFW pipe
SpecificationSteel gradeChemical compositionRemarks
Pipes for pressure service
ASTM A671, A672
ProductsSteel GradeBASE METAL MECHANICAL COMPOSITIONWelding point tensile strength (N/mm2)Remarks
Yield point (N/mm2)Tensile Stregth (N/mm2)Test PiecesElongation (%)
Pipes for pressure service ASTM A671, A672-/A45-/165-/310~450-/30-/310~450A671/A672
Why Choose Gnee ASTM A671 Carbon Steel EFW pipe?
Gnee’s ASTM A671 carbon steel EFW pipe is distinguished by its superior quality, performance, and compliance with strict industry standards. At Gnee, we prioritize customer satisfaction and strive to meet our customers’ needs and exceed their expectations. Our ASTM A671 carbon steel EFW pipes are manufactured using high-quality materials and advanced production techniques. We employ stringent quality control measures to ensure that each pipe meets the highest industry standards. The result is a durable and reliable product that provides long-lasting performance.

In addition, our ASTM A671 carbon steel EFW pipe has been successfully exported to more than 60 countries such as Vietnam, Malaysia, Indonesia, Pakistan, UAE, and South Korea, etc. Many regular customers visit our company and factory and make multiple orders.

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What Services Does Gnee Provide?

Gnee can provide the following measurement services for ASTM A671 carbon steel EFW pipes:

1. Dimensional measurement: Measure the dimensional parameters such as length, width, and thickness by measuring instruments to ensure the pipe is qualified and meets the design requirements.
2. Surface measurement: Measure parameters such as flatness, unevenness, and surface roughness of the A671 carbon steel EFW pipe surface to help ensure that the quality and surface state of the pipe meet the requirements.
3. Thickness measurement: Use a thickness measuring instrument to accurately measure the thickness of the ASTM A671 carbon steel EFW pipe to ensure that it meets the design requirements.
4. Material measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the product to ensure that the quality and performance meet the requirements.
5. Bending and Deformation Measurements:The degree of bending and deformation of the steel pipe is measured and monitored by using tools such as bending measuring instruments and displacement sensors to ensure that it is within the allowable range.

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Gnee can customize the size and shape of steel pipes for your project according to specific project needs. The custom design of the ASTM A671 carbon steel EFW pipe is carried out by a professional engineer and design team. Based on the requirements and constraints of the project, they will use calculation and simulation tools, combined with experience and technical knowledge, to optimize the steel pipe design to meet the specific needs of your engineering.

● According to the strength requirements of structural design, adjust the thickness, width, and length of ASTM A671 carbon steel EFW pipes.
● The shape of the steel pipe can be designed according to the characteristics of the project.
● If you consider the convenience of installation and maintenance, we can also add openings for easy operation in the design for areas that require frequent maintenance.

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Purchasing Gnee ASTM A671 carbon steel EFW pipe can provide the following deep processing services. We can customize according to the specific needs of customers to meet the requirements.

Cutting service: ASTM A671 carbon steel EFW pipe can be custom cut to obtain the desired shape and size according to the needs of customers. For example, flame cutting, plasma cutting, laser cutting, etc., can cut steel pipes into required blocks, special-shaped parts.
Bending and forming:A671 carbon steel EFW pipes are bent and formed by stress application and appropriate processes to obtain the desired shape.
Welding service: ASTM A671 carbon steel EFW pipes can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Turning and machining of holes: Turning and machining of holes in ASTM A671 carbon steel EFW pipes by using machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface treatment: In order to improve the corrosion resistance and aesthetics of the steel pipe, surface treatment can be carried out. This includes methods such as spraying, hot-dip galvanizing, electroplating, etc. to add a protective layer and provide corrosion resistance.

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Gnee ASTM A671 carbon steel EFW pipes can provide the following testing services through third-party testing agencies. These third-party testing services can provide independent, objective verification that pipes comply with relevant standards and regulations.

Material chemical composition analysis: Through chemical composition analysis, determine whether the composition of the steel pipe meets the standard requirements.
Mechanical performance test: Mechanical performance test includes tensile test, impact test, bending test, etc., which determine whether the mechanical properties such as strength, toughness and ductility of products meet the specified requirements.
Metallographic testing: Through metallographic testing, check the structure, grain size, non-metallic inclusions, etc. of ASTM A671 carbon steel EFW pipes to evaluate their quality and performance.
Corrosion performance test: Through the corrosion performance test, evaluate the corrosion resistance of ASTM A671 carbon steel EFW pipes, including salt spray corrosion resistance, chemical corrosion resistance, etc.
Hardness test: Hardness test is used to measure the hardness of ASTM A671 carbon steel EFW pipe, and its strength and wear resistance can be evaluated according to the hardness value.
Ultrasonic flaw detection: Ultrasonic flaw detection is used to detect internal defects of pipes, such as cracks, pores, inclusions, etc.

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