164 CIVIL WORKS GUIDELINES FOR MICRO-HYDROPOWER IN NEPAL
Steel Industries P. Ltd.
G.P.O Box 4129. Kanlipath, Jamal.Kaihmandu. Napal. Tel: 977-1-253047, 228389. 243452, 252475. 252850,
Fax: 977-1-220612 Factory : Simra. Bara. Tel: 977-53-20075, 20078, 20170. Fax: 977-53-20160
GALVANISED AND BLACK STEEL PIPES FOR ORDINARY USES IN WATER, GAS AIR & STEAM LINES
TVPE
CLASS
LIGHT’
‘A’
NOMINAL
BORE
MM INCH
15 1/2
20 3/4
25 1
32 11/4
40 11/2
50 2
65 21/2
80 3
100 4
WALL
APPOX OD
THICKNESS
MM MM
2.00
2.35
2.65
2.65
2.90
2.90
3.25
3.25
3.65
21.30
26.90
33.70
42.40
48.30
60.30
76.20
88.90
114.30
WEIGHT OF
BLACK PIPE PLAIN END
KG/M
MTR/M.1
0.92
1.41
2.01
2.58
3.25
4.11
5.80
6.81
9.89
1050
709
498
388
308
243
172
147
101
WEIGHT OF GALVANISED PIPE
THREADED & SOCKETED
KG/M
MTR/M.T
1.01
1.48
2.11
2.72
3.41
4.33
6.11
7.21
10.49
990
676
474
355
281
222
156
133
91
MEDIUM
‘B’
15
20
25
32
40
50
65
80
100
125
150
1/2 2.65
3/4 2.65
1 3.25
11/4 3.25
11/2 3.25
2 3.65
21/2 3.65
3 4.05
4 4.50
5 4.85
6 4.85
21.30
26.90
33.70
42.40
48.30
60.30
76.20
88.90
114.30
139.70
165.10
1.22
1.58
2.44
3.14
3.61
5.10
•.51
8.47
12.10
16.20
19.20
820
633
410
318
277
196
154
118
83
62
52
1.28
1.65
2.54
3.27
3.77
5.32
6.82
8.87
12.69
16.95
20.00
781
606
394
292
254
179
140
107
75
55
47
HEAVY
‘c’
20
25
32
40
50
65
80
100
125
150
200
200
3/4 3.25
26.90 1.90
526
1.97
508
1 405
3370 297
336
3.07
326
11/4 4.05
42.40 3.84
260
3.97
239
11/2 4.05
48.30 4.43
226
459 207
2 4.50
21/2 4.50
3 4.85
4 5.40
60.30
76.20
88.90
114.30
6.17
7.90
10.10
14.40
162
127
99
69
6.39
8.21
10.52
15.44
148
115
90
63
5 5.40
139.70 17.80
56
18.52
51
6 5.40
165.10 21.20
47
22.22
42
200mm GALVANISED AND BLACK STEEL PIPES (Detailed specification on request)
8 5.20
8 6.00
219.10
219.10
27.71
31.82
36
31
29.20
33.20
32
28
Notes:
1) Tensile Strength: Tensile strength for water tubes when tested from strips, cut out from selected tubes shall be more than 320 n/mm2.
2) Tolerances: a) Thickness:
Light tubes: {+} not limited, (-) 8% max. Medium & Heavy pipes: (+) not limited, (-) 10% max.
b) Weight:
Single tubes: (+) 10%, (-) 8%.
c) Length:
Unless otherwise specified 4 to 7 meters.
3) Pipes of higher tensile strength and bigger diameter can also be manufactured as per request.
A JOINT VENTURE BETWEEN