Stainless steel welded tubes are used in various industries and must meet specific standards. Two commonly referenced standards are ASTM A270 and JIS G3447, which outline the requirements for sanitary tubing in different regions and industries.
ASTM A270
ASTM A270 is a standard for seamless and welded austenitic stainless steel sanitary tubing. It is widely used in the dairy, food, pharmaceutical, and biotechnology industries. Key requirements include:
Chemical Composition: Specifies the material’s composition.
Mechanical Properties: Covers tensile strength, yield strength, and elongation.
Dimensions and Tolerances: Includes outside diameter, wall thickness, and length.
Surface Finish: Specifies roughness and cleaning standards.
Nondestructive Testing: Requires tests such as eddy current or hydrostatic.
Heat Treatment: Details requirements if applicable.
Packaging and Marking: Provides guidelines for labeling and packing.
JIS G3447
JIS G3447 is a Japanese industrial standard for stainless steel sanitary pipes. It is used in the food, beverage, and pharmaceutical industries. Key requirements include:
Chemical Composition: Defines the material’s chemical makeup.
Mechanical Properties: Specifies tensile strength, yield strength, and elongation.
Dimensions and Tolerances: Includes outside diameter, wall thickness, and length.
Surface Finish: Requires specific roughness and cleaning standards.
Nondestructive Testing: Mandates tests such as eddy current or hydrostatic.
Heat Treatment: Specifies requirements if necessary.
Packaging and Marking: Outlines labeling and packing rules.
ASTM A270 JIS G3447 Specification
Standard: ASTM A270 JIS G3447
Material/Steel Grade: TP304, TP304L, TP316L, SUS304TBS
Application: Sanitary Tubes
Size: OD: 25.4~165.2mm WT: 0.8~3.05mm
Finish: Mill,220/320/400/600 Grit
Remark
(1)Marking： Product Spec. for ASTM A249/A270, JIS G3447/G3463, CNS 6668/7383, AS 1528.1
(2)＊：Product Spec. for ASTM A269
Key Differences
While both standards are used for sanitary applications, their use varies by region:
ASTM A270: Predominantly used in the United States and internationally recognized.
JIS G3447: Primarily applied in Japan, with some variations compared to ASTM A270.
Both standards ensure high-quality stainless steel tubes suitable for sanitary use, tailored to the needs of specific industries and regions.
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