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A312 Seamless Pipes
A312 Seamless Pipes
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Stainless Steel pipes are manufactured to ASTM A312 (Seamless)
Available in grades 304/304L and 316/316L
Fixed lengths of 6 metres except for certain sizes
Dimensions according to ASME/ANSI B36.10 and B36.19
Weights are based on theoretical calculations. Actual weight may vary.
● IN STOCK
Schedule - Nominal Bore
Size
A312 Seamless
Weight
Inch (NPS)
mm (DN)
O.D.
W.T.
I.D
304/304L
316/316L
kg/m
S10 S
⅛
6
10.3
1.24
7.82
0.28
¼
8
13.7
1.65
10.40
0.48
⅜
10
17.1
1.65
13.80
●
●
0.64
½
15
21.3
2.11
17.08
●
●
1.01
¾
20
26.7
2.11
22.48
●
●
1.31
1
25
33.4
2.77
27.86
●
●
2.13
1¼
32
42.2
2.77
36.66
●
●
2.76
1½
40
48.3
2.77
42.76
●
●
3.17
2
50
60.3
2.77
54.76
●
●
4.01
2½
65
73
3.05
66.90
●
●
5.36
3
80
88.9
3.05
82.80
●
●
6.59
3½
90
101.6
3.05
95.50
●
7.55
4
100
114.3
3.05
108.20
●
●
8.52
5
125
141.3
3.40
134.50
●
●
11.82
6
150
168.3
3.40
161.50
●
●
14.13
8
200
219.1
3.76
211.58
●
●
20.37
10
250
273.1
4.19
264.72
●
●
28.34
12
300
323.9
4.57
314.76
●
●
36.73
14
350
355.6
4.78
346.04
●
42.14
S40 S/STD
⅛
6
10.3
1.73
6.84
●
0.36
¼
8
1.7
2.24
9.22
●
●
0.64
⅜
10
17.1
2.31
12.48
●
●
0.86
½
15
21.3
2.77
15.76
●
●
1.30
¾
20
26.7
2.87
20.96
●
●
1.71
1
25
33.4
3.38
●
●
2.55
1¼
32
42.2
3.56
35.08
●
●
3.46
1½
40
48.3
3.68
40.94
●
●
4.13
2
50
60.3
3.91
52.48
●
●
5.54
2½
65
73
5.16
62.68
●
●
8.81
3
80
88.9
5.49
77.92
●
●
11.52
3½
90
101.6
5.74
90.12
●
●
13.84
4
100
114.3
6.02
102.26
●
●
16.40
5
125
141.3
6.55
128.20
●
●
22.20
6
150
168.3
7.11
154.08
●
●
28.83
8
200
219.1
8.18
202.74
●
●
43.39
10
250
273.1
9.27
254.56
●
●
61.52
12
300
323.9
9.53
304.84
●
●
75.32
S40
12
300
323.9
10.31
303.28
●
79.73
14
350
355.6
11.13
333.34
●
●
94.55
16
400
406.4
12.70
381.00
●
123.30
S80 S/XS
⅛
6
10.3
2.41
5.48
●
0.36
¼
8
13.7
3.02
7.66
●
●
0.64
⅜
10
17.1
3.20
10.70
●
●
0.86
½
15
21.3
3.73
13.84
●
●
1.30
¾
20
26.7
3.91
18.88
●
●
1.71
1
25
33.4
4.55
24.30
●
●
2.55
1¼
32
42.2
4.85
32.50
●
●
3.46
1½
40
48.3
5.08
38.14
●
●
4.13
2
50
60.3
5.54
49.22
●
●
5.54
2½
65
73
7.01
58.98
●
●
8.81
3
80
88.9
7.62
73.66
●
●
11.52
3½
90
101.6
8.08
85.44
●
13.84
4
100
114.3
8.56
97.18
●
●
16.40
5
125
141.3
9.53
122.24
●
●
22.20
6
150
168.3
10.97
146.36
●
●
28.83
8
200
219.1
12.70
193.70
●
●
43.39
10
250
273.1
12.70
247.70
●
●
61.52
12
300
323.9
12.70
298.50
●
●
75.32
S80
10
250
273.1
15.09
242.92
●
96.01
12
300
323.9
17.48
288.94
●
132.08
14
350
355.6
19.05
317.50
●
158.10
16
400
406.4
21.44
363.52
●
203.53
S120
4
100
114.3
11.13
92.04
●
28.32
5
125
141.3
12.70
115.90
●
40.28
6
150
168.3
14.27
139.76
●
54.20
8
200
219.1
18.26
182.58
●
90.44
S160
½
15
21.3
4.78
11.74
●
●
1.95
¾
20
26.7
5.56
15.58
●
●
2.90
1
25
33.4
6.35
20.70
●
●
4.24
1¼
32
42.2
6.35
29.50
●
●
5.61
1½
40
48.3
7.14
34.02
●
●
7.25
2
50
60.3
8.74
42.82
●
●
11.11
2½
65
73
9.53
53.94
●
●
14.92
3
80
88.9
11.13
66.64
●
●
21.35
4
100
114.3
13.49
87.32
●
●
33.54
5
125
141.3
15.88
109.54
●
●
49.11
6
150
168.3
18.26
131.78
●
●
67.56
8
200
219.1
23.01
173.08
●
111.27
SXXS
½
15
21.3
7.47
6.36
●
2.55
¾
20
26.7
7.82
11.06
●
3.64
1
25
33.4
9.09
15.22
●
5.45
1¼
32
42.2
9.70
22.80
●
7.77
1½
40
48.3
10.15
28.00
●
9.56
2
50
60.3
11.07
38.16
●
13.44
2½
65
73
14.02
44.96
●
20.39
3
80
88.9
15.24
58.42
●
27.68
4
100
114.3
17.12
80.06
●
41.03
5
125
141.3
19.05
103.20
●
57.43
6
150
168.3
21.95
124.40
●
79.22
A312 Seamless Pipes
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