ASTM A178 is a specification for electric resistance welded carbon steel tubes that are used for high-temperature service, mainly in construction boilers. These welded pipes are manufactured using a process called electric resistance welding (ERW), which involves heating the edges of the steel strip and joining them together under pressure.
ASTM A178 welded pipes are made from carbon steel, providing excellent strength and durability. The specification covers tubes with various dimensions and thicknesses, ensuring suitability for different boiler applications. The standard specifies that these tubes should be cold-formed and subjected to heat treatment after welding to achieve the necessary mechanical properties and structural integrity.
| Element | Composition (%) |
|---|---|
| Carbon | 0.06-0.18 |
| Manganese | 0.27-0.63 |
| Phosphorus | 0.035 (max) |
| Sulfur | 0.035 (max) |
| Silicon | 0.10 (max) |
| Property | Value |
|---|---|
| Tensile Strength(MPa) | 325(min) |
| Yield Strength(MPa) | 180(min) |
| Elongation (%) | 35(min) |
| Hardness (HRB) | 70(max) |
ASTM A178 welded pipes are available in different steel grades, including Grade A, Grade C, and Grade D. These grades are defined based on the chemical composition and mechanical properties of the tubes.
The primary application of ASTM A178 welded pipes is in construction boilers, where they serve as heat exchanger tubes. These tubes efficiently transfer heat from the combustion process to the water or steam, ensuring optimum boiler performance. They are also used in various industrial applications where high-temperature resistance and durability are crucial.
While ASTM A178 tubes are specifically designed for construction boilers, there are alternative grades that can be used depending on specific requirements. Some possible alternatives include ASTM A179, ASTM A192, and ASTM A210 tubes. These grades offer similar properties and can be suitable replacements based on the application and operating conditions.
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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