Nepal Standard


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Galvanized MS Pipe for water Supply NS 199 : 2046
bkmf $ =@= ! / tflnsf ! sf] ;DaGwdf IS 1239 (I)-1990 sf] bkmf tflnsf
!,@,# cg';f/ /fVg]

Thickness and mass mentioned in tables 1,2,3 are applicable to both blackand galvanized pipes

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bkmf $=@=! !)) dL=dL nfdf] kfOsf] 6'qmfdf h:tf n]kgsf] dfqf kl/If0f
ubf{ 36Ldf #^) u|fd k|lt ju{ dL6/ x'g'kb{5 .
bkmf $=@=$ k|lt !) 6g -Go"gtd _ sf] v]kdf -xn'sf_ ± &=% k|ltzt
k|lt !) 6g -Go"gtd _ sf] v]kdf -uÅf}+ / dWod_ – % k|ltzt
bkmf $=@=^ h:tf n]kgsf] ;d?ktf
(uniformity of coating ) kl/If0f ubf{
kfOknfO{ kfFr k6s;Dd Ps ldg]6sf] lx;fan] lgn] t'yf]
(Copper Sulphate)
sf] emf]ndf 8'afpFbfklg clGtd laGb'df k'Ug' x'Fb}g .


Table 1 Dimensions and Nominal Mass of Steel Tubes – Light
( Clauses 4.2.1)

Nominal Bore (mm)

Outside Diameter

Thickness (mm)

Mass of Tube

Maximum (mm)

Minimum ( mm )

Plain End ( Kg/m)

Screwed & Socketed         ( Kg/M)

(1)

(2)

(3)

(4)

(5)

(6)

6

10.1

9.7

1.8

0.360

0.363

8

13.6

13.2

1.8

0.515

0.519

10

17.1

16.7

1.8

0.670

0.676

15

21.4

21.0

2.0

0.947

0.956

20

26.9

26.4

2.3

1.380

1.390

25

33.8

33.2

2.6

1.980

2.000

32

42.5

41.9

2.6

2.540

2.570

40

48.4

47.8

2.9

3.230

3.270

50

60.2

59.6

2.9

4.080

4.150

65

76.0

75.2

3.2

5.710

5.830

80

88.7

87.9

3.2

6.720

6.890

100

113.9

113.0

3.6

9.750

10.000

 

Table 2 Dimensions and Nominal Mass of Steel Tubes- Medium
(Clauses 4.2.1)

Nominal Bore (mm)

Outside Diameter

Thickness (mm)

Mass of Tube

Maximum (mm)

Minimum ( mm )

Plain End ( Kg/m)

Screwed & Socketed         ( Kg/M)

(1)

(2)

(3)

(4)

(5)

(6)

6

10.6

9.8

2.0

0.404

0.407

8

14.0

13.2

2.3

0.641

0.645

10

17.5

16.7

2.3

0.839

0.845

15

21.8

21.0

2.6

1.210

1.220

20

27.3

26.5

2.6

1.560

1.570

25

34.2

33.3

3.2

2.410

2.430

32

42.9

42.0

3.2

3.100

3.130

40

48.8

47.9

3.2

3.560

3.600

50

60.8

59.7

3.6

5.030

5.100

65

76.6

75.3

3.6

6.420

6.540

80

89.5

88.0

4.0

8.360

8.530

100

115.0

113.1

4.5

12.200

12.500

125

140.8

138.5

4.8

15.900

16.400

150

166.5

163.9

4.8

18.900

19.500

 

 

Table 3 Dimensions and Nominal Mass of Steel Tubes –Heavy
( Clauses 4.2.1)

Nominal Bore (mm)

Outside Diameter

Thickness (mm)

Mass of Tube

Maximum (mm)

Minimum ( mm )

Plain End ( Kg/m)

Screwed & Socketed         ( Kg/M)

(1)

(2)

(3)

(4)

(5)

(6)

6

10.6

9.8

2.6

0.487

0.490

8

14.0

13.2

2.9

0.765

0.769

10

17.5

16.7

2.9

1.020

1.030

15

21.8

21.0

3.2

1.440

1.450

20

27.3

26.5

3.2

1.870

1.880

25

34.2

33.3

4.0

2.930

2.950

32

42.9

42.0

4.0

3.790

3.820

40

48.8

47.9

4.0

4.370

4.410

50

60.8

59.7

4.5

6.190

6.260

65

76.6

75.3

4.5

7.930

8.050

80

89.5

88.0

4.8

9.900

10.100

100

115.0

113.1

5.4

14.500

14.800

125

140.8

138.5

5.4

17.900

18.400

150

166.5

163.9

5.4

21.300

21.900

 


 

 

 

 

 

 

 

 

 

 

 

Table 1 Size and Properties of Steel tubes for Structural Purpose
NS: 427

Nominal Bore (mm)

Outside Diameter (mm)

Class

Thickness (mm)

Weight (kg/m)

Area of Cross Section

Internal Volume (cm3 /m)

Surface

Moment of Inertia (m4)

Modulus of Section (cm3)

Radius of Gyration (cm)

Square of radius of gyration (cm3)

External (cm3/m)

Internal (cm3/m)

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

(11)

(12)

(13)

 

 

Light

2.0

0.947

1.21

235

 

543

0.57

0.54

0.69

0.47

15

21.3

Medium

2.6

1.21

1.53

203

669

506

0.69

0.64

0.66

0.44

 

 

Heavy

3.2

1.44

1.82

174

 

468

0.75

0.70

0.55

0.42

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

2.3

1.38

1.78

390

 

700

1.36

1.01

0.87

0.76

20

26.9

Medium

2.6

1.56

1.98

370

845

681

1.48

1.10

0.86

0.74

 

 

Heavy

3.2

1.87

2.38

330

 

644

1.70

1.26

0.84

0.71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

2.6

1.98

2.54

638

 

895

3.09

1.83

1.10

1.21

25

33.7

medium

3.2

2.41

3.06

585

1059

857

3.61

2.14

1.08

1.17

 

 

Heavy

4.0

2.93

3.75

518

 

807

4.19

2.48

1.05

1.11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

2.6

2.54

3.25

1086

 

1168

6.47

3.05

1.41

1.98

32

42.4

Medium

3.2

3.10

3.94

1017

1332

1130

7.62

3.59

1.39

1.93

 

 

Heavy

4.0

3.79

4.82

929

 

1088

8.99

4.24

1.36

1.86

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

2.9

3.23

4.13

1418

 

1335

10.70

4.43

1.61

2.59

40

48.3

Medium

3.6

3.56

4.53

1378

1517

1316

11.59

4.80

1.59

2.54

 

 

Heavy

4.5

4.37

5.56

1275

 

1265

13.77

5.70

1.57

2.47

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

2.9

4.08

5.23

2332

 

1711

21.59

7.16

2.03

4.13

50

60.3

Medium

3.6

5.03

6.41

2213

1891

1667

25.88

8.58

2.00

4.02

 

 

Heavy

4.5

6.19

7.88

2066

 

1611

30.90

10.20

1.98

3.92

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

3.2

5.71

7.32

3814

 

2189

48.79

12.82

2.58

6.66

65

76.1

Medium

3.6

6.42

8.20

3727

2391

2163

54.02

14.20

2.57

6.60

 

 

Heavy

4.5

7.93

10.10

3534

 

2107

65.12

17.10

2.54

6.43

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

3.2

6.72

8.61

5343

 

2591

79.23

17.82

3.03

9.19

80

88.9

Medium

4.0

8.36

10.70

5138

2793

2540

96.36

21.68

3.00

9.00

 

 

Heavy

4.8

9.90

12.70

4936

 

2490

112.52

25.31

2.98

8.88

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

3.6

8.70

11.10

6995

 

2964

133.27

26.23

3.47

12.03

90

101.6

Medium

4.0

9.63

12.30

6877

3192

2939

146.32

28.80

3.45

11.91

 

 

Heavy

4.8

11.46

14.60

6644

 

2889

171.44

33.75

3.43

11.76

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

3.6

9.75

12.50

9004

 

3363

192.03

33.60

3.92

15.36

100

114.3

Medium

4.5

12.20

15.50

8704

3591

3306

234.30

41.00

3.89

15.10

 

 

Heavy

5.4

14.50

18.50

8409

 

3250

274.50

48.00

3.85

14.86

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

4.5

13.60

17.30

10930

 

3707

325.30

51.20

4.33

18.78

110

127

Medium

4.8

14.50

18.40

10819

3990

3686

344.58

54.27

4.32

18.60

 

 

Heavy

5.4

16.20

20.60

10599

 

3649

382.00

60.20

4.30

18.52

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

4.5

15.00

19.10

13410

 

4104

437.20

62.60

4.78

22.87

125

139.7

Medium

4.8

15.90

20.30

13287

4788

4085

463.44

66.35

4.77

22.76

 

 

Heavy

5.4

17.90

22.80

13043

 

4087

514.50

73.70

4.75

22.58

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

4.5

16.40

20.90

16142

 

4503

572.20

75.10

5.23

27.37

135

152.4

Medium

4.8

17.50

22.20

16008

4788

4484

606.92

79.65

5.22

27.25

 

 

Heavy

5.4

19.60

25.00

15740

 

4446

674.50

88.50

5.20

27.05

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

4.5

17.80

22.70

19128

 

4902

732.60

88.70

5.68

32.27

150

165.1

Medium

4.8

18.90

24.20

18981

5187

4883

777.32

94.16

5.67

32.14

 

 

Heavy

5.4

21.30

27.10

18690

 

4845

864.70

105.00

5.65

31.92

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Light

4.5

18.20

23.10

19921

 

5002

777.20

92.40

5.79

33.56

150

168.1

Medium

4.8

19.40

24.70

19771

5287

4983

824.78

98.01

5.78

33.42

 

 

Heavy 1

5.4

21.70

27.60

19473

 

4946

917.70

109.00

5.76

33.21

 

 

Heavy 2

6.3

25.20

32.00

19030

 

4889

1053.00

125.00

5.73

32.85

 

 

 

 

 

 

 

 

 

 

 

 

 

175

193.7

Light

4.8

22.40

28.50

26606

 

5781

1271.70

131.31

6.68

44.63

 

 

Medium

5.4

25.10

32.00

26260

6883

5743

1417.00

146.00

6.66

44.36

 

 

Heavy

5.9

27.30

34.80

25974

 

5712

1535.20

158.65

6.64

41.11

 

 

 

 

 

 

 

 

 

 

 

 

 

200

219.1

Light

4.8

25.40

32.30

34454

 

6578

1856.51

169.47

7.58

57.45

 

 

Medium

5.6

29.50

37.50

33930

6883

6525

2141.00

195.00

7.55

57.02

 

 

Heavy

5.9

31.00

39.50

33734

 

6509

2247.00

205.00

7.54

56.86

 

 

Zinc Coating
Zinc Coating, if any may depend upon the agreement between buyer and seller

Tubes shall be straight Unless there is agreement between purchaser and supplier. In the absence of agreement tubes shall not deviate from straightness by more than 1/600 of any length
Major Requirements
Dimensions and nominal mass of the tubes shall be as per table 1

Table 2 Tolerances

Thickness

 

Welded Tubes

 

Seamless Tubes

 

 

 

 

      +    Not Limited

-          10%

      +    Not

-          12.5%

Outside Diameter

 

Up to and

Including 48.3 mm

Over 48.3 mm

 

 

      +    0.4 mm

-          0.8 mm

±    1%

 Weight

 

Single Tube (Light Series)                                                                             + 10%

                                                                                                                        -  8%

Single Tube (Medium & Heavy Series)                                                         ± 10%

 

For quantities per load of 10 tons. Min(Light Series)                                    ± 5%

For quantities per load of 10 tons, Min (Medium & Heavy Series)               ± 7.5%                                                                                                                                

 

In the case of Welded pipes internal welding Projection shall not be more than 60 percent of the thickness. External bead shall be removed by cutting and bead-cut portion flush with pipe surface.

Dimensions and nominal mass of the tubes shall be as per table 1

Table 2 Tolerances
 

Grade

Yield Strength Min.

(MPa)

Tensile Strength , Min

(MPa)

% Elongation,

Min

 

YST 210

YST 240

YST 310

 

210

240

310

 

330

410

450

 

20

17

14

For sizes up to and including 25 mm NB for all grades , minimum elongation Percentage will be 12%

 

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Tel:
00977 - 51 - 534441/534442/524767
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