As a reliable Seamless Pipe Supplier from china, Our specialized ASME SA 161 Grade C Carbon Steel Seamless Tube is a high-quality low-carbon Carbon Steel Seamless Tube. Designed specifically for high-temperature and high-pressure environments, it represents a typical High Temperature Carbon Steel Pipe widely used in heaters, boilers, and refinery equipment. Its seamless construction ensures uniform strength, offering superior reliability and safety in demanding conditions compared to ERW Steel Pipe (Electric Resistance Welded pipe).
ASME SA 161 Grade C material contains 0.10-0.20% carbon and 0.30-0.80% manganese, also known as low-carbon steel pipes or mild steel pipes. It offers excellent cost-effectiveness and is easy to form through operations like bending and flanging. While its hardness is lower than high-carbon steel in its natural state, surface hardness can be effectively increased through carburizing processes to meet specific wear resistance requirements.
ASME SA 161 Grade C Seamless vs. ERW Steel Pipe
When choosing between Carbon Steel Seamless Tube and ERW Steel Pipe, the key lies in understanding your application requirements:
SA 161 Grade C Seamless Steel Pipe: With no weld seam, it exhibits superior fatigue and corrosion resistance under high-temperature, high-pressure, and cyclic loading conditions. Its uniform wall thickness and material structure make it the ideal choice for critical applications such as heater tubes and high-pressure pipelines.
ERW Steel Pipe: Typically offers lower cost and faster production cycles, making it suitable for non-critical, ambient temperature fluid transmission applications with lower pressure requirements (such as water, air, and low-pressure steam).
As an experienced supplier, Yuan Steel Pipe provides both high-quality seamless steel pipes and ERW steel pipes. Our engineering team will recommend the most economical and reliable solution based on your specific project parameters.
Chemical Properties
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
| 0.10-0.20 | max0.25 | 0.30-0.80 | 0.035 | 0.035 | - | - | - | - | - |
Mechanical Properties
| Yield Strength | Tensile Strength | Elongation A5 min | |||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 324 | - | 47 | 35 | ||
Specifications & Range
Standards: ASME SA 161 / ASTM A161
Pipe Type: Seamless (Hot-finished / Cold-finished)
Size Range:
Outside Diameter: 6.00 mm to 228.6 mm (0.236" to 9")
Wall Thickness: 0.85 mm to 40 mm (0.033" to 1.575"), with minimum wall thickness ≥ 0.220" (5.59 mm) per standard
Length: Single Random, Double Random, or Custom-cut up to 27 meters
Schedule Available: Sch 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XS, XXS, STD
Pipe Ends: Plain End, Beveled End, Threaded with Plastic Caps
This specification covers minimum-wall-thickness, seamless, hot-finished and cold-finished, low-carbon and carbon-molybdenum steel still tubes, for use in carrying fluids at elevated temperatures and pressures in various types of heaters, in which the tubes may be subjected to furnace temperature higher than that of the contained fluid.
This specification covers tubes 2 to 9 in. (50.8 to 228.6 mm), inclusive in outside diameter and over 0.220 in. (5.59 mm) in minimum wall thickness.
Where butt welding is used to obtain lengths longer than single lengths normally produced in the mill, Specification A 422 shall cover the requirements for butt welds.
The values stated in inch-pound units are to be regarded as the standard. The values in parentheses are for information only.
Advantages of ASME SA 161 Grade C Carbon Steel Seamless Tube
The advantages of ASME SA 161 Grade C Carbon Steel Seamless Tube are its high strength and uniform structure due to the absence of a weld seam, which makes it reliable for high-pressure and high-temperature applications. It offers superior corrosion resistance and uniform strength around its entire circumference, eliminating the risk of failure at a weld. Additionally, it is suitable for general-purpose industrial applications and can be manufactured with thick or thin walls to suit specific needs for strength or weight.
The seamless construction means there is no weld seam, providing uniform strength and pressure resistance all around the pipe's circumference.
Its robust, homogeneous structure makes it suitable for critical applications that involve elevated temperatures and pressures, such as in heaters and boilers.
The lack of a seam eliminates a potential weak point where welded tubes could fail, making it a more reliable choice for demanding environments.
These seamless steel tubes can be used in various applications, including oil and gas, petrochemicals, and power generation.
The seamless steel tubes can be manufactured with either thick or thin walls to meet specific application requirements, offering a balance between high-strength needs and light weight.
ASME SA 161 Grade C Carbon Steel Seamless Tube is suitable for forming operations like bending and flanging.
1. Customized Technical Solutions
We offer comprehensive customization including OD, WT, and length adjustments, supplemented with specialized end finishing and anti-corrosion coatings. This technical flexibility makes our line pipe ideal for various project specifications.
2. Rigorous Quality Assurance
Implementing strict quality control from material selection to final inspection, each ASME SA161 Grade C Seamless tubes undergoes multiple NDT tests, guaranteeing consistent compliance with industry standards and project requirements.
3. Professional Technical Support
Our engineering team provides end-to-end technical services, from product selection to installation guidance, ensuring optimal performance of every ASME SA161 Grade C Seamless Pipe in your operations.
4. Proven Product Excellence
Our ASME SA161 Grade C seamless steel tubes strictly complies with SA161 carbon seamless steel pipes standards, delivering superior strength and pressure capacity while maintaining excellent toughness in low-temperature environments. The enhanced corrosion resistance ensures reliable performance even in demanding service conditions.
5. Optimized Cost Efficiency
Through vertical integration and streamlined supply chain management, we maintain competitive pricing while ensuring product quality, providing clients with superior value line pipe solutions.
These ASTM A161/ ASME SA161 carbon seamless steel pipes are used in various application industry like Carrying Fluids At High Pressure Under High Temperatures In Heaters, Condensers, Heat Exchangers, Boilers, Etc. engineering applications in automotive industry, Heat Transfer Equipments Like Sugar Mills, Petrochemical Industry, Construction & Cement Industries & Steel Plants Too.
These are available in different size, specification & thickness as per the clients requirements.
| Standard | SA161 Tubes & A161 Tubes |
| Range | straight lengths up to 27.00 Meters with Outside Diameter ranging from 6.00mm to 8O.00mm and thickness ranging from 0.85mm to 6mm. |
| Length | Double Random & Required Length, Single Random, & Custom Size Available |
| Pipes & Tubes End | Plain End, Beveled End, Treaded Protected With Plastic Caps |
| Schedule | 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XS, XXS, STD |
| Type | Seamless SA161 & A161 Pipes & Tubes, High Carbon, Low Carbon |
Hainan Yuan Steel Pipe Supply Chain Co.,Ltd is one of the leading ASME SA161 Grade C seamless steel tubes distributors.
If you want to buy or import best high-quality ASME SA161 Grade C Seamless Pipe, please kindly feel free to contact us.
