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A312 A790
A312
  • Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
  • (이음매 없는/있는 오스테나이트계 스텐레스 스틸 파이프에 관한 규정)
  • ASTM A312
  • ●Designation : A 312/A 312M-09
  • ●Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
  • Pipe Schedule List JIS G3459 / KS D3576, D 3588 / ANSI B36.10, B36.19
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외경 MM SCH 5S SCH 10S SCH 10 SCH 20S SCH 20 SCH 30 SCH 40S STD SCH 40 SCH 80S SCH XS SCH 80 SCH 160 SCH XXS
6A 10.50 1.00 1.20   1.50         1.70     2.40    
1/8" 10.29   1.24 1.24     1.45 1.73 1.73 1.73 2.41 2.41 2.41    
8A 13.80 1.20 1.65   2.00   .     2.20     3.00    
1/4" 13.72   1.65 1.65     1.85 2.24 2.24 2.24 3.02 3.02 3.02    
10A 17.30 1.20 1.65   2.00         2.30     3.20    
3/8" 17.15   1.65 1.65     1.85 2.31 2.31 2.31 3.20 3.20 3.20    
15A 21.70 1.65 2.10   2.50         2.80     3.70 4.70  
1/2" 21.34 1.65 2.11 2.11     2.41 2.77 2.77 2.77 3.73 3.73 3.73 4.78 7.47
20A 27.20 1.65 2.10   2.50         2.90     3.90 5.50  
3/4" 26.67 1.65 2.11 2.11     2.41 2.87 2.87 2.87 3.91 3.91 3.91 5.56 7.82
25A 34.00 1.65 2.80   3.00         3.40     4.50 6.40  
1" 33.40 1.65 2.77 2.77     2.90 3.38 3.38 3.38 4.55 4.55 4.55 6.35 9.09
32A 42.70 1.65 2.80   3.00         3.60     4.90 6.40  
1-1/4" 42.16 1.65 2.77 2.77     2.97 3.56 3.56 3.56 4.85 4.85 4.85 6.35 9.70
40A 48.60 1.65 2.80   3.00         3.70     5.10 7.10  
1-1/2" 48.26 1.65 2.77 2.77     3.18 3.68 3.68 3.68 5.08 5.08 5.08 7.14 10.15
50A 60.50 1.65 2.80   3.50         3.90     5.50 8.70  
2" 60.33 1.65 2.77 2.77     3.18 3.91 3.91 3.91 5.54 5.54 5.54 8.74 11.07
65A 76.30 2.10 3.00   3.50         5.20     7.00 9.50  
2-1/2" 73.03 2.11 3.05 3.05     4.78 5.16 5.16 5.16 7.01 7.01 7.01 9.53 14.02
80A 89.10 2.10 3.00   4.00         5.50     7.60 11.10  
3" 88.90 2.11 3.05 3.05     4.78 5.49 5.49 5.49 7.62 7.62 7.62 11.13 15.24
90A 101.60 2.10 3.00   4.00         5.70     8.10 12.70  
3-1/2" 101.60 2.11 3.05 3.05     4.78 5.74 5.74 5.74 8.08 8.08 8.08    
100A 114.30 2.10 3.00   4.00         6.00     8.60 13.50  
4" 114.30 2.11 3.05 3.05     4.78 6.02 6.02 6.02 8.56 8.56 8.56 13.49 17.12
125A 139.80 2.80 3.40   5.00         6.60     9.50 15.90  
5" 141.30 2.77 3.40 3.40       6.55 6.55 6.55 9.53 9.53 9.53 15.88 19.05
150A 165.20 2.80 3.40   5.00         7.10     11.00 18.20  
6" 168.28 2.77 3.40 3.40      7.11 7.11 7.11 10.97 10.97 10.97 18.26 21.95
200A 216.30 2.80 4.00   6.50         8.20     12.70 23.00  
8" 219.08 2.77 3.76 3.76   6.35 7.04 8.18 8.18 8.18 12.70 12.70 12.70 23.01 22.23
250A 267.40 3.40 4.00   6.50         9.30     15.10 28.60  
10" 273.05 3.40 4.19 4.19   6.35 7.80 9.27 9.27 9.27 12.70 12.70 15.09 28.58 25.40
300A 318.50 4.00 4.50   6.50         10.30     17.40 33.30  
12" 323.85 3.96 4.57 4.57   6.35 8.38 9.53 9.53 10.31 12.70 12.70 17.48 33.32 25.40
350A 355.60                 11.10     19.00 35.70  
14" 355.60 3.96 4.78 6.35   7.92 9.53   9.53 11.13   12.70 19.05 35.71  
400A 406.40                 12.70     21.40 40.50  
16" 406.40 4.19 4.78 6.35   7.92 9.53   9.53 12.70   12.70 21.44 40.49  
450A 457.20                 14.30     23.80 45.20  
18" 457.20 4.19 4.78 6.35   7.92 11.13   9.53 14.27   12.70 23.83 45.24  
500A 508.00                 15.10     26.20 50.00  
20" 508.00 4.78 5.54 6.35   9.53 12.70   9.53 15.09   12.70 26.19 50.01  
550A 609.60                 15.90     28.60 54.00  
22" 609.60 4.78 5.54 6.35   9.53 12.70   9.53     12.70 28.58 53.98  
600A 609.60                 17.50     31.00 59.50  
24" 609.60 5.54 6.35 6.35   9.53 14.27   9.53 17.48   12.70 30.96 59.54  
650A 660.40                 18.90     34.00 64.20  
26" 660.40   7.92 7.92   12.70     9.53     12.70      
  • 허용공차
  • A312-09 / A999 / A999M-04a
Permitted Variation in Wall Thickness(두께 허용공차)
Tolerance % from Nominal
NPS Designator Over Under
1/8 to 2-1/2 incl., all t/D rations 20 12.5
3 to 18 incl., t/D up to 5% incl. 22.5 12.5
Permissible Variations in Outside Diameter (외경 허용공차)
NPS Permitted Variation in Outside Diameter
Designator
Over Under
in. mm in. mm
1/8-1-1/2, incl 1/64(0.015) 0.4 1/32(0.031) 0.8
Over 1-1/2 to 4, incl 1/32(0.031) 0.8 1/32(0.031) 0.8
Over 4 to 8, incl 1/12(0.062) 1.6 1/32(0.031) 0.8
Over 8 to 18, incl 3/32(0.093) 2.4 1/32(0.031) 0.8
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