ASTM A270 / A270M – 15: Standard Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing
ASTM A270 / A270M – 15
Standard Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing
1. Scope
1.1 This specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.
1.2 This specification covers tubes in sizes up to and including 12 in. [300 mm] in outside diameter.
1.3 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.4 Optional supplementary requirements are provided, and when one or more of these are desired, each shall be so stated in the order.
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ASTM A249/A269/A270, JIS G3447/G3463, CNS 6668/7383 |
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Standard/Item |
Outside Diameter |
Thickness |
Length |
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ASTM A249 |
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O.D .<< p=””> |
25mm |
+0.10mm |
, -0.11mm |
±10% |
O.D. < 50.8mm +3.0mm |
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25mm ≦ |
O.D. ≦ |
40mm |
± 0.15mm |
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-0mm |
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40mm << p=””> |
O.D. << p=””> |
50mm |
±0.20mm |
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O.D. ≧ 50.8mm +5.0mm |
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50mm ≦ |
O.D. << p=””> |
65mm |
±0.25mm |
|
-0mm |
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65mm ≦ |
O.D. << p=””> |
75mm |
±0.30mm |
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75mm ≦ |
O.D. ≦ |
100mm |
±0.38mm |
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100mm << p=””> |
O.D. ≦ |
200mm |
+0.38mm |
, -0.64mm |
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200mm << p=””> |
O.D. ≦ |
225mm |
+0.38mm |
, -1.14mm |
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ASTM A269 |
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O.D. << p=””> |
38.1mm |
±0.13mm |
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O.D. < 12.7mm ±15% |
O.D. < 38.1mm +3.2mm |
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38.1mm ≦ |
O.D. << p=””> |
88.9mm |
±0.25mm |
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O.D. ≧ 12.7mm ±10% |
-0mm |
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88.9mm ≦ |
O.D. << p=””> |
139.7mm |
±0.38mm |
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O.D. ≧ 38.1mm +4.8mm |
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139.7mm ≦ |
O.D. << p=””> |
203.2mm |
±0.76mm |
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|
-0mm |
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ASTM A270 |
|
O.D. ≦ |
25mm |
±0.13mm |
|
±12.5% |
O.D. ≦ 100mm +3mm |
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|
25mm << p=””> |
O.D. ≦ |
50mm |
±0.20mm |
|
-0mm |
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50mm << p=””> |
O.D. ≦ |
75mm |
±0.25mm |
|
O.D. > 100mm +5mm |
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75mm << p=””> |
O.D. << p=””> |
140mm |
±0.38mm |
|
-0mm |
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CNS 6668 |
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O.D. ≦ |
25.4mm |
± 0.15mm |
|
±10% |
+10mm |
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JIS G3447 |
25.4mm << p=””> |
O.D. ≦ |
31.8mm |
± 0.16mm |
|
-0mm |
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31.8mm << p=””> |
O.D. ≦ |
38.1mm |
± 0.19mm |
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38.1mm << p=””> |
O.D. ≦ |
76.3mm |
± 0.25mm |
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76.3mm << p=””> |
O.D. ≦ |
89.1mm |
± 0.30mm |
, -0.40mm |
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89.1mm << p=””> |
O.D. ≦ |
101.6mm |
± 0.35mm |
, -0.40mm |
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101.6mm << p=””> |
O.D. ≦ |
114.3mm |
± 0.40mm |
, -0.60mm |
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114.3mm << p=””> |
O.D. ≦ |
139.8mm |
± 0.40mm |
, -0.80mm |
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139.8mm << p=””> |
O.D. ≦ |
165.2mm |
± 0.40mm |
, -1.20mm |
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JIS G3463 |
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O.D. << p=””> |
60mm |
±0.25mm |
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O.D. < 40mm |
t < 2mm +0.4mm |
O.D. ≦ 50mm + 7mm |
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60mm ≦ |
O.D. << p=””> |
80mm |
±0.30mm |
|
-0.0mm |
– 0mm |
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80mm ≦ |
O.D. << p=””> |
100mm |
±0.40mm |
|
t ≧ 2mm +20% |
O.D. > 50mm +10mm |
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100mm ≦ |
O.D. << p=””> |
120mm |
+0.40mm |
, -0.60mm |
-0mm |
-0mm |
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120mm ≦ |
O.D. << p=””> |
160mm |
+0.40mm |
, -0.80mm |
O.D.≧ 40mm |
22% |
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160mm ≦ |
O.D. << p=””> |
200mm |
+0.40mm |
, -1.20mm |
-0mm |
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200mm ≦ |
O.D. |
|
+0.40mm |
, -1.60mm |
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