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Seamless Tubes

Automobile Tubes Oil Country Tubular Goods Drilling & Tubing Bearing Grade
 
 
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Seamless Tubes Seamless Tubes
 Automobile Tubes TOP

Aahana International Sale automobile tubes to virtually all international specifications and in a large range of steels. In addition to using standard steels Aahana International can also produce tubes from customised steel grades for instance Tellurium steel, which it is able to source in-house.

In the automobile industry Aahana International tubes are used extensively for the manufacture of steering columns, front and rear axle casings, tie rods, bearing races, CV cages and other annular cpmonents.

Tube Tolerances

Description Hot rolled   OD (%)     Wall t (%)
D/t 3.5 - 9.9  +/- 0.75% +/- 7.5%
D/t > 9.9 +/- 1.0 %  +/- 10%
  +/- 0.5 %  
Cold rolled subject to  
  +/- 0.25 mm +/- 5.0%
  minimum Higher of  
ID Calibrated Tubes +/- 1mm or As per Category
  +/- 1%  

Note : Tighter tolerances can be offered upon special request.

Hot finished tubes   1 : 600
Cold finished tubes  1 : 1000

Note : For special applications better straightness can be offered.

Lengths

Tubes are generally supplied in random lengths of 4 to 7 meters (or in a different range as per customer specifications.) Tubes in exact lengths, multiples of specified unit lengths or long lengths can also be supplied.

Specifications

BS980, DIN 2391, BS 1717, IS 1601, IS 1074, JIS Gr. 6, STK 45 or any other equivalent specifications.

Steels Grades Used

SAE 1019, 1518, 1035, 1040, SAE 4130H, SAE 8620, 20MnCr5, 16NiCr4 and ST-62

 

Oil Country Tubular Goods

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Oil Country Tubular Goods

Ahana International Sale a variety of OCTG products such as casings, tubing, line pipe, coupling stock. These items can be customized to the requirements of individual customers in terms of heat-treatment and finishes. For all of these products the steel used is produced by the electric arc furnace route and is fully killed.

The tubes are heat treated in controlled parameter heat treatment furnaces for ease of further working like welding, bending, etc. In order to minimize pressure losses the tubes are manufactured to tight tolerances with  an excellent finish on both the inner and outer surfaces. These tubes are hydro and leakage flux tested to ensure their structural integrity.

The American Petroleum Institute has certified products (API License No. 5CT – 0395, 5CT- 0123, 5L-0102, 5L-0296) and awarded the right to use the API monogram for specifications API5L, 5CT and 5D plain ended pipes.

Line Pipes

Types

>> API 5L Grade B / X42 / X46 / X52 / X60
>> NACE – MR01 – 75
>> SRL / DRL / EL
>> ASTM A106 Grade A / B / C
>> ASTM A53 Grade A / B
>> Equivalents of the above

Size Range
NPS OD Schedule – Wall Thickness
  mm 40 60 80 100 120 140 160 XXS
½” 21.3 2.77 - 3.73 - - - 4.78 7.47
¾” 26.7 2.87 - 3.91 - - - 5.56 7.82
1” 33.4 3.38 - 4.55 - - - 6.35 9.09
1 ¼” 42.2 3.56 - 4.85 - - - 6.35 9.70
1 ½” 48.3 3.68 - 5.08 - - - 7.14 10.15
2” 60.3 3.91 - 5.54 - - - 8.74 11.07
2 ½” 73.0 5.15 - 7.01 - - - 9.53 14.02
3” 88.9 5.49 - 7.62 - - - 11.13 15.24
3 ½” 101.6 5.74 - 8.08 - - - - -
4” 114.3 6.02 - 8.56 - 11.13 - 13.49 17.12
5” 141.3 6.55 - 9.53 - 12.70 - 15.88 19.05
6” 168.3 7.11 - 10.97 - 14.27 - 18.26 21.95
8” 219.1 8.18 10.31 12.70 15.09 18.26 20.62 23.01 22.23
10” 273.1 9.27 12.70 15.09 18.26 21.44 25.40 28.58 25.40
Line Pipe Weights (kg/m)
NPS OD Schedule – Wall Thickness
  mm 40 60 80 100 120 140 160 XXS
½” 21.3 1.27 - 1.62 - - - 1.95 2.55
¾” 26.7 1.69 - 2.20 - - - 2.90 3.64
1” 33.4 2.50 - 3.24 - - - 4.24 5.45
1 ¼” 42.2 3.39 - 4.4 - - - 5.61 7.77
1 ½” 48.3 4.05 - 5.41 - - - 7.25 9.56
2” 60.3 5.44 - 7.48 - - - 11.12 13.44
2 ½” 73.0 8.63 - 11.41 - - - 14.90 20.39
3” 88.9 11.29 - 15.27 - - - 21.35 27.68
3 ½” 101.6 13.57 - 18.63 - - - - -
4” 114.3 16.07 - 22.32 - 28.32 - 33.54 41.04
5” 141.3 21.77 - 30.94 - 40.28 - 49.11 57.43
6” 168.3 28.26 - 42.56 - 54.20 - 67.59 79.25
8” 219.1 42.55 53.08 64.64 75.92 90.44 100.62 111.27 107.27
10” 273.1 60.29 81.52 95.97 114.70 133.09 155.09 172.21 155.09
Threaded and Coupled Line Pipe Size Range : 4” – 8”
Casing Pipes Tubing
API 5CT API 5CT
Thread Types : BTC / LTC / 5TC End Types : NUE, EUE
OD PPF Range OD PPF Range
4 ½” 10.5 – 15.1 2 3/8” 4.7 – 7.45
5” 13 – 24.1 2 7/8” 6.5 – 9.45
5 ½” 14 – 26.8 3 ½” 9.3 – 12.95
6 5/8” 20 – 32 4 ½” 11
7” 17 – 35    
7 5/8” 24 – 42.8    
8  5/8” 24 – 44    
9 5/8” 36 – 53.5    

Couplings
Aahana International Sale finished machined coupling for Casings, Tubing and Line pipes to API specifications.

Specifications End Types Application
5L - Line Pipes
5CT, 5B EUE, NUE Tubing
5CT, 5B - Casing Pipes

** All couplings are duly gauged, phosphated, painted and either stenciled or punch marked with an API Monogram Size Range and Types of Thread

  Size Range Types of Thread
Line Pipes 2” - 8” “V” threads (8 TPI)
Tubing 2 3/8” – 4 ½” EUE, NUE – 8RD
Casing Pipes 4 ½” – 9 5/8” BTC, LTC / STC

Plain End Tubes / Pipes

>> Drill Tubes
>> Drill Collars
>> Casings
>> Tubings
>> Coupling Stock

 

Drilling & Tubing

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Tubing

Drill Rods & Drill Tubes

Ahana International Sale seamless tubes used extensively of drill rods, drive rods, core barrels, casings, couplings and in the manufacture of diamond core drilling equipment. These tubes are manufactured from high- grade carbon / alloy steels and are precision cold drawn and heat treated.

Standard Specification
Ahana International Sale tubes can be manufactured to the following standard specifications. Upon request these tubes can also be produced to the individual specifications of a particular customer.

ASTm / ASME Swedish BS JIS API
DCDMA SIS – 74130- IE 4019 G 3465 5 CT
5 D
Standard Grades
  Mechanical Properties Chemical Composition % (Avg.)
ISMT GRADE Yield Strength Ultimate Tensile Elongation miin.
(Gauge length 2”)
C Mn Mo Cr V
  min.mpa min.mpa            
TOUGHDRILL 550 550 620 13% 0.33 0.70 - - -
TOUGHDRILL 620 620 725 13% 0.42 1.50 - - -
TOUGHDRILL N80 550 690 13% 0.20 1.50 - - -
TOUGHDRILL G95 628 765 13% 0.33 1.60 - - -
TOUGHDRILL 710 710 820 13% 0.40 1.60 - - -
TOUGHDRILL 760 758 862 13% 0.35 1.60 0.35 0.60 0.18
TOUGHDRILL G95 740 880 13% 0.45 1.00 0.25 0.10 -

Standard Sizes

Aahana International Sales drills are manufactured in the following standard sizes. In addition they can be produced to any specific size within an Outer diameter (OD) of 10mm to 140mm.

Wireline Drill Rod Tubes
Designation Outer Diameter
(mm)
Inner Diameter
(mm)
Outer Diameter (inches) Inner Diameter
(inches)
  min. max. min. max. min. max. min. max.
AQ 44.275 44.675 34.820 35.070 1.743 1.758 1.370 1.380
BQ 55.475 55.875 45.950 46.200 2.184 2.200 1.810 1.819
NQ 69.775 70.175 60.070 60.320 2.747 2.763 2.365 2.375
HQ 88.890 89.290 77.750 78.000 3.500 3.515 3.061 3.071
PQ 114.240 114.740 102.820 103.170 4.497 4.517 4.048 4.062
‘W’ Design Flush Joint Casing Tubes
Designation Outer Diameter
(mm)
Inner Diameter
(mm)
Outer Diameter
(inches)
Inner Diameter
(inches)
  min. max. min. max. min. max. min. max.
RW 35.365 35.765 30.320 30.480 1.392 1.408 1.190 1.200
EW 45.955 46.345 38.100 38.350 1.808 1.824 1.500 1.509
AW 57.075 57.475 48.420 48.670 2.247 2.262 1.906 1.916
BW 72.955 73.355 60.330 60.580 2.872 2.887 2.375 2.385
NW 88.890 89.290 76.330 76.580 3.499 3.515 3.005 3.015
HW 114.240 114.740 101.250 101.600 4.497 4.517 3.986 4.000
‘X’ Design Flush Coupled Casing Tubes
Designation Outer Diameter
(mm)
Inner Diameter
(mm)
Outer Diameter
(inches)
Inner Diameter
(inches)
  min. max. min. max. min. max. min. max.
RX 36.365 36.765 30.320 30.480 1.431 1.447 1.190 1.200
EX 46.035 46.435 41.030 41.280 1.812 1.828 1.615 1.625
AX 57.075 57.475 48.420 48.670 2.247 2.262 1.906 1.916
BX 72.955 73.355 60.330 60.580 2.872 2.887 2.375 2.385

Bearing Grade

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Round Bars
Dimensional Tolerances
 Description

Size Range

Tolerance
 

OD (mm)

OD (mm)

Wall t (%)

 Hot rolled 38 - 75
>   75 - 100
> 100 - 125
> 125 - 200
+/- 0.4
+/- 0.5
+/- 0.6
+/- 1.0%
+/- 5%
+/- 5%
+/- 5%
+/- 10%
 Hot rolled and Peeled >   36 - 120 +/- 0.40
    - 0.00
+/- 5%
+/- 5%
+/- 5%
+/- 10%
 Cold pilgered / Roto rolled 19 - 80
> 80 - 91
+ 0.30
- 0.00

+ 0.40
- 0.00
+/- 5%



+/- 5%
  **Note: Tighter tolerances can be offered on specific request.
 Eccentricity

Straightness

Hot finished & peeled

10% of wall thickness

Cold pilgered / roto-rolled

1 : 1000

All other tubes

OD < 125mm: 5% of wall thickness
OD > 125mm: 10% of wall thickness

Hot finished / hot finished & peeled

1 : 600

Lengths
Tubes are generally supplied in random lengths of 3 - 4.5 mts with 10% up to 2mts.

 

 
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