Carbon Steel Pipes & Tubes
We have a large scale unit engaged in stocking and exporting carbon steel tubes, carbon steel pipes and carbon steel welded pipes, carbon steel welded tubes and electrogalvanized steel tubes/pipes. we supply for engineering purpose, ERW pipes for water, gas & sewerage, carbon steel tubes for idlers of belt conveyors, water wells and lancing pipes for various automotive & industrial applications.
Applications: Carbon Steel is used in the most critical engineering applications and also in certain applications in the automotive sector. In addition, some of the value-added Carbon Steel products include steel for LPG cylinders, API grade, corrosion resistant steel, critical structural application steel, boiler quality, auto grades, precision tubes and medium/high carbon grades, among others.

Carbon Products: A53 Grade A, A53 Grade B
Size Range: 1/8" - 26"
Schedules: 20, 30, 40, Standard (STD), Extra Heavy (XH), 80, 100, 120, 140, 160, XXH & heavier.
Grades:  ASTM A53 Gr A seamless, ASTM A53 Gr A ERW, ASTM A53 Gr B seamless, ASTM A53 Gr B ERW,API 5L Grade B to API 5L X80 ( API Seamless Line Pipe)
Size Range: 1/2" - 36"
Schedules: Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH
Grades:  API 5L Grade B PSL1, API 5L X42 PSL1, API 5L X46 PSL1, API 5L X52 PSL1, API 5L X56 PSL1, API 5L X60 PSL1, API 5L X65 PSL1, API 5L X70 PSL1, API 5L X80 PSL1, API 5L Grade B PSL2, API 5L X42 PSL2, API 5L X46 PSL2, API 5L X52 PSL2, API 5L X56 PSL2, API 5L X60 PSL2, API 5L X65 PSL2, API 5L X70 PSL2, API 5L X80 PSL2,
ASTM A139 Grade A, Grade B, Grade C, Grade D, Grade E (Standard Specification for Electric-Fusion (Arc)-Welded Steel Pipe (NPS 4 and Over)
Size Range: 1/2" to 26"
Schedules:  Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH.
Grades:  ASTM A139 Grade A, ASTM A139 Grade B, ASTM A139 Grade C, ASTM A139 Grade D, ASTM A139 Grade E,

ASTM A135 Grade A, Grade B (Standard Specification for Electric-Resistance-Welded Steel Pipe)
Size Range: 1/2" to 26"

Schedules: Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH.
Grades:  ASTM A179

A333 Grade 1, 3, 4, 6, 7, 8, 9, 10 & 11 (Low Temperature Carbon Steel Seamless Pipe)
Size Range: 1/2" - 36"

Schedules: Standard (STD), Extra Heavy (XH), 100, 120, 160, XXH.
Grades :- A334 Grade 1, A334 Grade 3, A334 Grade 4, A334 Grade 6, A334 Grade 7, A334 Grade 8, A334 Grade 9, A334 Grade 10, A334 Grade 11
API 5L Grade B to API 5L X80 ( API Welded Line Pipe, API ERW PIPE, API LSAW/DSAW PIPE, API HSAW PIPE)

Size Range: 1/2" - 100"
Schedules: API 5L Grade B lsaw, API 5L X42 lsaw, API 5L X46 lsaw, API 5L X52 lsaw, API 5L X56 lsaw, API 5L X60 lsaw, API 5L X65 lsaw, API 5L X70 lsaw, API 5L X80 lsaw, API 5L Grade B erw, API 5L X42 erw, API 5L X46 erw, API 5L X52 erw, API 5L X56 erw, API 5L X60 erw, API 5L X65 erw, API 5L X70 erw, API 5L X80 erw, API 5L Grade B hsaw, API 5L X42 hsaw, API 5L X46 hsaw, API 5L X52 hsaw, API 5L X56 hsaw, API 5L X60 hsaw, API 5L X65 hsaw, API 5L X70 hsaw, API 5L X80 hsaw

API5L Grade B X-42 X-46 X-52 X-56 X-60 X-65 X-70 X-80 DSAW/LSAW/SAW
Size Range: 26" - 100"
Schedules: 10, 20, 30, Std, 40, 60, XS, 80, 100, 120, 160, XXS/XXH & heavier.
Grades:  API-5L Gr B, API-5L Gr X42, API-5L Gr X46, API-5L Gr X52, API-5L Gr X56, API-5L Gr X60, API-5L Gr X65, API-5L Gr X70, API-5L Gr X80 Grade bm psl1, X42m psl1, x46m psl1, x52 psl1, x56 psl1, x60 psl1, x65 psl1, x70 psl1, x80psl1 Grade bm psl2, X42m psl2, x46m psl2, x52 psl2, x56 psl2, x60 psl2, x65 psl2, x70 psl2, x80psl2

ASTM A333 Grade 6

 

MECHANICAL REQUIREMENTS

ELEMENT

COMPOSITION, %

C, Max

0.30

Mn

0.29-1.06

P,Max

0.03

S, Max

0.03

Si, Min

Si, Min

A For each reduction of 0.01% carbon below 0.30%, an increase of 0.05% manganese above 1.06% would be permitted to a maximum of 1.35% manganese.

TENSILE REQUIREMENTS

ELONGATION

psi

Mpa

L

T

Y.S,min

35 000

240

22

12

T.S,min

60 000

415

 

Stress Relieving of Test Pieces

Metal Temperature

°F

°C

5

600

1050

565

1000

540

ASTM A106 Grade B & GRADE C

CHEMICAL REQUIREMENTS

ELEMENT

COMPOSITION, %

ASTM A106 Gr.B

ASTM A106 Gr.C

C maxA

0.30

0.35

Mn

0.29-1.06

0.29-1.06

P, max

0.04

0.04

S, max

0.04

0.04

Si, min

0.10

0.10

Cr, maxB

0.40

0.40

Cu, maxB

0.40

0.40

Mo, maxB

0.15

0.15

Ni, maxB

0.40

0.40

V, maxB

0.08

0.08

A) For each reduction of 0.01% below the specified carbon maximum, an increase of 0.06% manganese above the specified maximum will be permitted up to a maximum of 1.35%.
B) These five elements combined shall not exceed 1%.

Tensile Requirements

ASTM A106 Gr.B

ASTM A106 Gr.C

Y.S, min, psi[Mpa]

35 000 [240]

40 000 [275]

T.S., min, psi[Mpa]

60 000 [415]

70 000 [485]

ELONGATION

ASTM A106 Gr.B

ASTM A106 Gr.C

L

T

L

T

22

12

20

12

API 5L 245 OR GR.B

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis a

SEAMLESS PIPE

C

Mn

P

S

V

Nb

Ti

maxb

max.b

min.

max.

max.

max.

max.

max.

0.28

1.20

-

0.030

0.030

c,d

c,d

d

WELDED PIPE

0.26

1.20

-

0.030

0.030

c,d

c,d

d

a

0.50% maximum for copper, 0.50% maximum for nickel, 0.50% maximum for chromium, and
0.15% maximum for molybdenum. For grades up to and including L360/X52, Cu, 
Cr and Ni shall not be added intentionally.

b

For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B, but = L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; and up to a maximum of 2.00% for grade L485 or X70.

c

Unless otherwise agreed, the sum of the niobium and vanadium contents shall be = 0.06%.

d

The sum of the niobium ,vanadium and titanium concentrations shall be = 0.15%.

MECHANICAL REQUIREMENTS

Weld seam of EW, SAW and COW pipes

Y.Sa

T.Sa

ELONGATION

Tensile Strengthb

Mpa(psi)

Mpa(psi)

Mpa(psi)

min

min

min

min

245(35 500)

415(60 200)

28%

415 (60 200)

a

For intermediate grades, the differencec between the specified minimum tensile strength and the specified minimum yield strength for the pipe body shall be as given in the table for the next higher grade.

b

For Intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determines for the pipe body using footnote a)

API 5L 290 OR X 42

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis a

SEAMLESS PIPE

C

Mn

P

S

V

Nb

Ti

maxb

max.b

min.

max.

max.

max.

max.

max.

0.28

1.30

-

0.030

0.030

d

d

d

WELDED PIPE

0.26

1.30

-

0.030

0.030

d

d

d

a

0.50% maximum for copper, 0.50% maximum for nickel, 0.50% maximum for chromium, and 0.15% maximum for molybdenum. For grades up to and including L360/X52, Cu, Cr and Ni shall not be added intentionally.

b

For each reduction of 0.01% below the specified maximum concentration for carbon, an increase of 0.05% above the specified maximum concentration for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B, but = L360 or X52; up to a maximum of 1.75% for grades > L360 or X52, but < L485 or X70; and up to a maximum of 2.00% for grade L485 or X70.

d

The sum of the niobium ,vanadium and titanium concentrations shall be = 0.15%.

MECHANICAL REQUIREMENTS

Weld seam of EW, SAW and COW pipes

Y.Sa

T.Sa

ELONGATION

Tensile Strengthb

Mpa(psi)

Mpa(psi)

Mpa(psi)

min

min

min

min

290(42 100)

415(60 200)

c

415 (60 200)

a

For intermediate grades, the difference between the specified minimum tensile strength and the specified minimum yield strength for the pipe body shall be as given in the table for the next higher grade.

b

For Intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determines for the pipe body using footnote a)

c

The specified minimum elongation, Af, expressed in percent and rounded to the nearest percent, shall be as determined using the following equation:

API 5L 390 OR X 56

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis % maximum

CARBON EQUIVALENT a

% MAXIMUM

Cb

Si

Mnb

P

S

V

Nb

Ti

Other

CEIIW

CEPcm

SEAMLESS & WELDED PIPES

0.24

0.45

1.4

0.03

0.02

0.10 f

0.05

0.04

d,e

0.43

0.25

0.18

0.45

1.5

0.03

0.02

0.07

0.05

0.04

d,e

0.43

0.25

WELDED PIPE

0.22

0.45

1.4

0.03

0.02

d

d

d

e

0.43

0.25

a

Based upon product analysis. For seamless pipe with t>20.0 mm (0.787 in), the carbon equivalent limits shall be as agreed. The CELLW limits apply if the carbon mass fraction is greater than 0.12% and the CEpcm limits apply if the carbon mass fraction is less than or equal to 0.12%.

b

For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.05% above the specified maximum for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B

d

the sum of the niobium & vanadium & titanium concentrations shall be =0.15%

e

Unless otherwise agreed, 0.50% maximum for copper, 0.30% maximum for nickel, 0.30% maximum for chromium, & 0.15% maximum for molybdenum.

f

Unless otherwise agreed

CEIIW

C+(Mn/6)+(Cu+Ni/15)+(Cr+Mo+V/5)

CEPcm

C+(Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)+5B

MECHANICAL REQUIREMENTS

weld seam of HFW, SAW and COW pipes

Y.Sa

T.Sa

Ratio a,b,c

Elongation

Tensile strength d

Mpa(psi)

Mpa(psi)

Af

Mpa(psi)

min

max

min

max

max

min

min

390(56 600)

545 (79 000)

490 (71 100)

760 (110 200)

0.93

f

490 (71 100)

a

For intermediate grades, the difference between the specified maximum yield strength and the specified minimum yield strength shall be as given in the table for the next higher grade, and the difference between the specified minimum tensile strength and the specified minimum yield strength shall be as given in the table for the next higher grade. For intermediate grades lower than Grade L555 orX80, the tensile strength shall be = 760 Mpa (110 200 psi). For intermediate grades higher than Grade L555 or X80, the maximum permissible tensile strength shall be obtained by interpolation. For SI units, the calculated value shall be rounded to the nearest 5 Mpa. For USC units, the calculated value shall be rounded to the nearest 100 psi.

b

For grades > L625 or X90, Rp0,2 applies.

c

This limit applies for pipe with D > 323,9 mm (12.750 in).

d

For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using footnote a).

f

The specified munimum elongation, Af, shall be as determined using the following equation:

API 5L 415 OR X60

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis % maximum

CARBON EQUIVALENT a

% MAXIMUM

Cb

Si

Mnb

P

S

V

Nb

Ti

Other

CEIIW

CEPcm

SEAMLESS & WELDED PIPES

0.24f

0.45f

1.4f

0.03

0.02

0.10 f

0.05f

0.04f

g,h

as agreed

0.18f

0.45f

1.7f

0.03

0.02

g

g

g

h

0.43

0.25

WELDED PIPE

0.12f

0.45f

1.6f

0.03

0.02

g

g

g

h

0.43

0.25

a

Based upon product analysis. For seamless pipe with t>20.0 mm (0.787 in), the carbon equivalent limits shall be as agreed. The CELLW limits apply if the carbon mass fraction is greater than 0.12% and the CEpcm limits apply if the carbon mass fraction is less than or equal to 0.12%.

b

For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.05% above the specified maximum for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B

f

Unless otherwise agreed

g

Unless otherwise agreed the sum of the niobium, vanadium & titanium concentrations shall be =0.15%

h

Unless otherwise agreed, 0.50% maximum for copper, 0.50% maximum for nickel, 0.50% maximum for chromium, & 0.50% maximum for molybdenum.

CEIIW

C+(Mn/6)+(Cu+Ni/15)+(Cr+Mo+V/5)

CEPcm

C+(Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)+5B

MECHANICAL REQUIREMENTS

weld seam of HFW, SAW and COW pipes

Y.Sa

T.Sa

Ratio a,b,c

Elongation

Tensile strength d

Mpa(psi)

Mpa(psi)

Af

Mpa(psi)

min

max

min

max

max

min

min

415(60 200)

565 (81 900)

520 (75 400)

760 (110 200)

0.93

f

520 (75 400)

a

For intermediate grades, the difference between the specified maximum yield strength and the specified minimum yield strength shall be as given in the table for the next higher grade, and the difference between the specified minimum tensile strength and the specified minimum yield strength shall be as given in the table for the next higher grade. For intermediate grades lower than Grade L555 orX80, the tensile strength shall be = 760 Mpa (110 200 psi). For intermediate grades higher than Grade L555 or X80, the maximum permissible tensile strength shall be obtained by interpolation. For SI units, the calculated value shall be rounded to the nearest 5 Mpa. For USC units, the calculated value shall be rounded to the nearest 100 psi.

b

For grades > L625 or X90, Rp0,2 applies.

c

This limit applies for pipe with D > 323,9 mm (12.750 in).

d

For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using footnote a).

f

The specified munimum elongation, Af, shall be as determined using the following equation:

API 5L450 OR X65

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis % maximum

Cb

Si

Mnb

P

S

V

Nb

SEAMLESS & WELDED PIPES

0.18f

0.45f

1.7f

0.03

0.02

g

g

WELDED PIPE

0.12f

0.45f

1.6f

0.03

0.02

g

g

a

Based upon product analysis. For seamless pipe with t>20.0 mm (0.787 in), the carbon equivalent limits shall be as agreed. The CELLW limits apply if the carbon mass fraction is greater than 0.12% and the CEpcm limits apply if the carbon mass fraction is less than or equal to 0.12%.

b

For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.05% above the specified maximum for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B

f

Unless otherwise agreed

g

Unless otherwise agreed the sum of the niobium, vanadium & titanium concentrations shall be =0.15%

h

Unless otherwise agreed, 0.50% maximum for copper, 0.50% maximum for nickel, 0.50% maximum for chromium, & 0.50% maximum for molybdenum.

CEIIW

C+(Mn/6)+(Cu+Ni/15)+(Cr+Mo+V/5)

CEPcm

C+(Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)+5B

MECHANICAL REQUIREMENTS

weld seam of HFW, SAW and COW pipes

Y.Sa

T.Sa

Ratio a,b,c

Elongation

Tensile strength d

Mpa(psi)

Mpa(psi)

Af

Mpa(psi)

min

max

min

max

max

min

min

450(65 300)

600 (87 000)

535 (77 600)

760 (110 200)

0.93

f

535 (77 600)

a

For intermediate grades, the difference between the specified maximum yield strength and the specified minimum yield strength shall be as given in the table for the next higher grade, and the difference between the specified minimum tensile strength and the specified minimum yield strength shall be as given in the table for the next higher grade. For intermediate grades lower than Grade L555 orX80, the tensile strength shall be = 760 Mpa (110 200 psi). For intermediate grades higher than Grade L555 or X80, the maximum permissible tensile strength shall be obtained by interpolation. For SI units, the calculated value shall be rounded to the nearest 5 Mpa. For USC units, the calculated value shall be rounded to the nearest 100 psi.

b

For grades > L625 or X90, Rp0,2 applies.

c

This limit applies for pipe with D > 323,9 mm (12.750 in).

d

For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using footnote a).

f

The specified munimum elongation, Af, shall be as determined using the following equation:

API 5L 485 OR X70

CHEMICAL COMPOSITION

Mass fraction, based upon heat and product analysis % maximum

CARBON EQUIVALENT a

% MAXIMUM

Cb

Si

Mnb

P

S

V

Nb

Ti

Other

CEIIW

CEPcm

SEAMLESS & WELDED PIPES

0.18f

0.45f

1.8f

0.03

0.02

g

g

g

h

0.43

0.25

WELDED PIPE

0.12f

0.45f

1.7f

0.03

0.02

g

g

g

h

0.43f

0.25

a

Based upon product analysis. For seamless pipe with t>20.0 mm (0.787 in), the carbon equivalent limits shall be as agreed. The CELLW limits apply if the carbon mass fraction is greater than 0.12% and the CEpcm limits apply if the carbon mass fraction is less than or equal to 0.12%.

b

For each reduction of 0.01% below the specified maximum for carbon, an increase of 0.05% above the specified maximum for manganese is permissible, up to a maximum of 1.65% for grades = L245 or B

f

Unless otherwise agreed

g

Unless otherwise agreed the sum of the niobium, vanadium & titanium concentrations shall be =0.15%

h

Unless otherwise agreed, 0.50% maximum for copper, 0.50% maximum for nickel, 0.50% maximum for chromium, & 0.50% maximum for molybdenum.

CEIIW

C+(Mn/6)+(Cu+Ni/15)+(Cr+Mo+V/5)

CEPcm

C+(Si/30)+(Mn/20)+(Cu/20)+(Ni/60)+(Cr/20)+(Mo/15)+(V/10)+5B

MECHANICAL REQUIREMENTS

weld seam of HFW, SAW and COW pipes

Y.Sa

T.Sa

Ratio a,b,c

Elongation

Tensile strength d

Mpa(psi)

Mpa(psi)

Af

Mpa(psi)

min

max

min

max

max

min

min

485(70 300)

635 (92 100)

570 (82 700)

760 (110 200)

0.93

f

570 (82 700)

a

For intermediate grades, the difference between the specified maximum yield strength and the specified minimum yield strength shall be as given in the table for the next higher grade, and the difference between the specified minimum tensile strength and the specified minimum yield strength shall be as given in the table for the next higher grade. For intermediate grades lower than Grade L555 orX80, the tensile strength shall be = 760 Mpa (110 200 psi). For intermediate grades higher than Grade L555 or X80, the maximum permissible tensile strength shall be obtained by interpolation. For SI units, the calculated value shall be rounded to the nearest 5 Mpa. For USC units, the calculated value shall be rounded to the nearest 100 psi.

b

For grades > L625 or X90, Rp0,2 applies.

c

This limit applies for pipe with D > 323,9 mm (12.750 in).

d

For intermediate grades, the specified minimum tensile strength for the weld seam shall be the same value as was determined for the pipe body using footnote a).

f

The specified munimum elongation, Af, shall be as determined using the following equation:

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