SI. No

Standard No./Product

Type

Tolerances

Outside Diameter

Maximum Thickness

Maximum Mass

Length

Minus

Plus

Minus

Plus

%

%

%

%

1

N.S. 199/2046

L

As per table in relevant standard

8

NL

8

10

Pipe length including socket or as agreed to between the purchaser and the supplier.

Galvanized Steel Pipes

M

10

NL

10

10

H

10

NL

10

10

2

I.S. 1239 (Part-I) 1990

L

As per table in relevant standard

8

NL

8

10

Pipe length including socket or as agreed to between the purchaser and the supplier.

M

10

NL

10

10

Black Steel Pipes

H

10

NL

10

10

3

B.S.1387/1995

L

As per table in relevant standard

8

NL

8

10

For specified length +6 mm, - 00 mm only

M

10

NL

8

1

Black Steel Pipes

H

10

NL

8

10

4

N.S.427/058

L

Upto and including 48.3 mm to 0.4 mm and -0.8mm over 48.3mm+ 1.0%

10

NL

8

10

Pipe length including socket or as agreed to between the purchaser and the supplier.

M

10

NL

10

10

Black Stee! Pipes

H

10

NL

10

10

5

I.S.1161/1979

L

Upto & including 48.3 mm to 0.4 mm and -0.8mm over 48.3mm + 1.0%

10

NL

8

10

Generally 4 to 7 Mtrs or as agreed to between the purchaser and the supplier.

Mild Steel Tubes used for structure

M

10

NL

10

10

H

10

NL

10

10

6

I.S.3601/1984

CQ

Upto & including 40mm NB+ 0.5 mm 1.0 mm, over 40 mm NB + 1% + 0.5mm

10

10

10

10

Generally 4 to 7 mtrs, 50% short random length of 1.0 to 4.0 mtr can be supplied for sizes 76.20 and 114.3 OD. For balance sizes 7.5%

Steel Pipes for General Engineering Purpose

7

I.S.811 /1987

As per table in relevant standard

5

5

5

5

+/- 1.5%

Cold formed angles channels

8

I.S.4923/ 1985

+ 1% of specified Dimension

10

10

8

10

+/- 6mm

Steel Hollow Sections

9

I.S.4720/1983

+ 1% of specified Dimension

12.5

15

8

10

+/- 25mm

Steel tubes used for water wells

10

I.S.3589/ 1991

+ 75% of specified Dimension

10

10

10

10

0

ERW Steel pipes for Water, gas & sewage (168.3 to 219.1mm)

11

B.S. 879/1965

As per table in relavant standard

10

10

Upto 6"

Generally 4 to 7 mtrs. 50% short random length of 1.0 to 4.0 mtr can be supplied for sized 76.20 and 114.3 OD, For balance sizes 7.5%

Steel tubes used for water wells

1

1

above 6"

0.75

0.75