ASTM A789/A789M Duplex Steel Seamless Tube Manufacturer
ASTM A789 / A789M Standard Specification
Standard: ASTMA789M/789
Material/Steel Grade: S31803, S32205, S32750
Application: Seamless Duplex Stainless Steel Tubing for General Service
Size: OD: 19.0~60.5mm WT: 1.2~5.0mm
Finish: Mill
Standard: ASTM A789M/789
Material/Steel Grade: S31803, S32205, S32750
Application: Seamless Duplex Stainless Steel Tubing for General Service
Size: OD: 19.0~60.5mm WT: 1.2~5.0mm
Finish: Mill
ASTMA789 /A789M Covers Grades of nominal wall thickness, stainless steel tubing for services requiring
general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels
are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
What Is ASTM A789 / A789M Standard Seamless Pipe?
ASTM A789/A789M standard seamless pipe is a stainless steel pipe that complies with ASTM (American Society for Testing and Materials) A789/A789M standard specifications and is mainly used for transportation pipelines under general service conditions. These pipes are usually made of austenitic-ferritic duplex stainless steel, which has good corrosion resistance and certain mechanical strength and is suitable for various industrial fields such as chemical, petroleum, natural gas, and pharmaceuticals.
ASTM A789/A789M VS ASTM A790/A790M
ASTM A789/A789M:
- This standard covers the manufacturing requirements for stainless steel and other austenitic stainless steel straight and spiral seam pipes.
- Pipes are typically used under general service conditions and are suitable for general corrosive environments and low or high-temperature service.
ASTM A790/A790M:
- This standard covers the manufacturing requirements for duplex (austenitic-ferritic) stainless steel seamless and welded pipe.
- Pipes are usually used in high-temperature, high-pressure, or corrosive environments with higher corrosion resistance and mechanical strength.
The key differences are the type of material and application area of the pipe. ASTM A789/A789M generally covers austenitic stainless steels and applications under general service conditions, while ASTM A790/A790M covers duplex stainless steels and more severe service environments and requirements. The choice of which standard to use depends on the specific project’s needs, including required pipe material properties, working environment conditions, and budget, among other factors. You can contact us directly to answer your questions.
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