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A790 Duplex & Super Duplex Seamless Pipe
A790 Duplex & Super Duplex Seamless Pipe
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Duplex and Superduplex Stainless Steel pipes are manufactured to ASTM A790 (Seamless) and ASTM A928 Class 1 (Welded/EFW)
Available in grades Duplex UNS S31803/32205 and UNS SS32750
Dimensions according to ASME/ANSI B36.10 and B36.19
ASTM A928 Class 1 only available from 8” onwards (Only in Duplex UNS S31803/32205 SCH10S and SCH40S)
Fixed lengths of 6 metres for Seamless except for certain sizes. Fixed lengths of 5.8 metres for Welded
Weights are based on theoretical calculations. Actual weight may vary.
● IN STOCK
Schedule - Nominal Bore
Size
A790 Seamless
Weight
Inch (NPS)
mm (DN)
O.D.
W.T.
I.D
UNS S31803 / S32205
UNS S32750
kg/m
S10 S
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
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
S40 S/STD
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
26.64
●
●
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
S80 S/XS
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
75
7.01
58.98
●
●
8.81
3
80
88.9
7.62
73.66
●
●
11.52
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
14
350
355.6
19.05
317.50
●
158.10
S160
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
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
8
200
219.1
22.23
174.64
107.92
A790 Duplex & Super Duplex Seamless Pipe
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