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The Quality Control Department is independent of manufacturing shop. All Tests are carried out by trained quality personnel in compliance with the guidelines of Quality Assurance System. To strengthen the hands of quality personnel, we have equipped our laboratory & shop floor with necessary testing machines such as Hydro Testing Machine up to 5500psi, Air under water testing, on-line & off-line Eddy Current Tester, Ultrasonic thickness Tester, UTS, Hardness Tester, Inverted Metallurgical Microscope with optics & CCD camera, Electro Etching Machine, Carbon - Sulphur Apparatus, Spectro & PMI for Chemically Assured Products etc.
Hydrostatic Test |
6 mm to 38.1 mm OD &
19.05 mm OD to 219.08 mm OD |
Pneumatic Test
(Air under water) |
6 mm OD to 38.1 mm OD
upto max 200 PSI |
In Line Eddy Current |
Up to 76.2 mm OD |
Off Line Eddy Current |
Up to 90 mm OD |
Ultrasonic Thickness Gauge |
Up to 10 mm (Digital) |
Spectroscope |
Spectromax |
Positive Material Identification(PMI) |
Niton |
Corrosion Testing |
Laboratory Glasswares to test
IGC Pr. A & E acc. ASTM A 262 |
Tensile
Flange / Flare
Flattening / Reverse Flattening
Bend Test |
UTE 40-FIE Make
(with Extensometer) |
Hardness Test |
Twin hardness tester, RAB-SAROJ make |
Micro structure Analysis
& Grain size examination |
Polishing Machine
Electro
Etching Machine
Inverted Metallurgical Microscope
with Optics & CDD camera
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Dimensional Checking |
Measuring Instruments-
Digital Vernier calliper, Flat & Ball
Micrometer etc of Mitutoyo Make |
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| QA / QC Parameters |
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PIPE SELECTION GUIDE AS PER ANSI 836.19 STANDARD |
Nominal Bore Pipe SIze In |
Schedule 5S |
Schedule 10S |
Schedule 40S |
Schedule 80S |
N.B
in inch. |
N.B
in mm |
mm |
Wall Thickness in mm |
Weight kg/mtr. |
Wall Thickness in mm |
Weight kg/mtr. |
Wall Thidmess
in mm |
Weight kg/mtr. |
Wall Thickness in mm |
Weight kg/mtr. |
1/4" |
8 |
13.72 |
1.24 |
0.380 |
1.65 |
0.499 |
2.24 |
0.644 |
3.02 |
0.809 |
3/8" |
10 |
17.15 |
1.40 |
0.544 |
1.65 |
0.640 |
2.31 |
0.858 |
3.20 |
1.118 |
1/2" |
15 |
21.30 |
1.65 |
0.815 |
2.11 |
1.016 |
2.77 |
1.288 |
3.73 |
1.645 |
3/4" |
20 |
26.70 |
1.65 |
1.034 |
2.11 |
1.298 |
2.87 |
1.710 |
3.91 |
2.228 |
1" |
25 |
33.40 |
1.65 |
1.312 |
2.77 |
2.125 |
3.38 |
2.541 |
4.55 |
3.287 |
1 1/4" |
32 |
42.20 |
1.65 |
1.674 |
2.77 |
2.732 |
3.56 |
3.441 |
4.85 |
4.531 |
1 1/2" |
40 |
48.30 |
1.65 |
1.926 |
2.77 |
3.155 |
3.68 |
4.108 |
5.08 |
5.493 |
2" |
50 |
60.30 |
1.65 |
2.424 |
2.77 |
3.992 |
3.91 |
5.524 |
5.54 |
7.601 |
2 1/2" |
65 |
73.00 |
2.11 |
3.747 |
3.05 |
5.345 |
5.16 |
8.769 |
7.01 |
11.589 |
3" |
80 |
88.90 |
2.11 |
4.585 |
3.05 |
6.557 |
5.49 |
11.466 |
7.62 |
15.509 |
3 1/2" |
90 |
101.60 |
2.11 |
5.260 |
3.05 |
7.526 |
5.74 |
13.778 |
8.08 |
18.921 |
4" |
100 |
114.30 |
2.11 |
5.930 |
3.05 |
8.496 |
6.02 |
16.322 |
8.56 |
22.685 |
5" |
125 |
141.30 |
2.77 |
9.610 |
3.40 |
11.740 |
6.55 |
22.101 |
9.52 |
31.444 |
6" |
150 |
168.30 |
2.77 |
11.480 |
3.40 |
14.037 |
7.11 |
28.694 |
10.97 |
43.211 |
8" |
200 |
219.08 |
2.77 |
15.000 |
3.76 |
20.290 |
8.18 |
43.230 |
12.70 |
65.670 |
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Guage No |
8 |
10 |
12 |
14 |
16 |
18 |
19 |
20 |
22 |
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S.W.G (Standard Wire Guage) |
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Inch |
0.160 |
0.128 |
0.104 |
0.080 |
0.064 |
0.048 |
0.040 |
0.036 |
0.028 |
mm |
4.064 |
3.251 |
2.642 |
2.032 |
1.626 |
1.219 |
1.016 |
0.914 |
0.711 |
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B.W.G (Birmingham Wire Guage) |
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Inch |
0.134 |
0.109 |
0.083 |
0.065 |
0.049 |
0.042 |
0.035 |
0.028 |
0.028 |
mm |
3.404 |
2.769 |
2.108 |
1.651 |
1.245 |
1.067 |
1.016 |
0.889 |
0.711 |
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The Test Pressure shall be determined by the following equation
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p = 2 St
D |
| where P= Hydrostatic Test pressure in psi |
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S= allowable fiber stress (60 percent of the specified minimum yield strength for carbon and ferritic alloy steel and 50 percent of the specified minimum Yield strength for austentic alloy steel) in psi.
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t=specified wall thickness in inches/mm
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D= specified or calculated outside diameter in lnches/mm
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The maximum hydrostatic test pressure shall not exceed 2,500 psi for nominal sizes 3 inches & under or 2,800 psi for nominal sizes over 3 inches. |
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HIGHLIGHTS OF ASTM SPECIFICATIONS FOR STAINLESS STEEL TUBES AND PIPES |
Specifications |
Allowable Outside Diameter Variations
in mm |
Allowable
Wall
Variations in % |
Exact length Tolerances in mm |
Testing |
ASTMA-213
Seamless Ferritic &
Austenitic steel,
Boiler & Superheater
Tubes & Austenitic
steel Heat
Exchange Tubes |
Diameter |
Over |
Under |
Over |
Under |
Over |
Under |
• Tension Test
• Flattening Test
• Flare Test
• Hardness Test
• 100% Hydrostatic Test or NDT |
Under 25.4
25.4-38.1 incl.
38.1-50.8 excl.
50.8-63.5 encl.
63.5-76.2 excl.
76.2-101.6 incl. |
0.1016
0.1524
0.2032
0.2540
0.3048
0.3810 |
0.1016
0.1524
0.2032
0.2540
0.3048
0.3810 |
20
20
22
22
22
22 |
0
0
0
0
0
0
|
3.175
3.175
3.175
3.760
4.760
4.760 |
0
0
0
0
0
0 |
ASTMA-249
Welded
Austenitic steel
Boiler, Superheater,
Heat Exchanger
&
Condenser Tubes
|
Under 25.4
25.4-38.1 incl.
38.1-50.8 excl.
50.8-63.5 excl.
63.5-76.2 excl.
76.2-101.6 incl. |
0.1016
0.1524
0.2032
0.2540
0.3048
0.3810
|
0.1016
0.1524
0.2032
0.2540
0.3048
0.3810
|
10
10
10
10
10
10
|
10
10
10
10
10
10
|
3.175
3.175
3.175
4.760
4.760
4.760
|
0
0
0
0
0
0
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• Tension Test
• Flattening Test
• Flange Test
• Reverse Bend Test
• Hardness Test
• 100% Hydrostatic Test or NDT
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ASTMA-269
Seamless & Welded
austenitic steel
tubing for general
service |
Under 12.7
12.7-38.1 excl.
38.1-88.9 excl.
88.9-139.7 excl.
139.7 203.2 excl. |
0.13
0.13
0.25
0.38
0.76 |
0.13
0.20
0.25
0.28
0.38 |
15
10
10
10
10 |
15
10
10
10
10 |
3.2
3.2
4.8
4.8
4.8 |
0
0
0
0
0 |
• Flare Test (Seamless only)
• Hardness Test
• Flange Test (Welded only)
• Reverse Flattening Test (Welded only)
• 100% Hydrostatic Test or NDT |
ASTMA-270
Seamless & Welded
austenitic steel for
Sanitary Tubing |
Under 2504
2504 to 50.8 excl.
50.8 to 76.2 excl.
76.2 to 101.6 excl. |
0.13
0.20
0.25
0.38 |
0.13
0.20
0.25
0.38 |
12.5
12.5
12.5
12.5 |
12.5
12.5
12.5
12.5 |
3.2
3.2
3.2
3.2 |
0
0
0
0 |
• Reverse Flattening Test
• 100% Hydrostatic Test or NDT
• External polish on all tubes
• Refer to ASTM A-270 |
ASTMA-312
Seamless, Welded
& Heavily
Cold worked
Austenitic SS Pipes
|
1/8 to 21/2 incl.,
a II t/D ratios
3 to 18 incl.,
t/D
up to 5 % incl.
3 to 18 incl.,
t/D> 5 %
|
0.40
0.80
1.60 |
0.80
0.80
0.80 |
20.0
22.5
15.0 |
12.5
12.5
12.5 |
6.35
6.35
6.35 |
0
0
0 |
• Tension Test
• Flattening Test
• 100% Hydrostatic Test or NDT
• Refer to ASTM A- 999 |
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ASTMA-688
Welded
Feed water heater
'U'Tubes |
Under 38.10 mm |
0.1016 |
0.1016 |
+20
+10 |
-10
(For Avg.
Walk thk)
-0
(for Min.
Walk thk) |
3 to 13 |
0 |
• Tension Test
• Flattening Test
• Flange Test
• Reverse Bend Test
• Hardness Test
• Reverse Flattening Test
• 100% Hydrostatic Test or NDT
• Air under water test |
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Equivalent EN Specifications |
EN 10216 - 5 |
Stainless Steel Seamless Tubes for High Pressure Applications |
EN 10217-7 |
Stainless Steel Welded Tubes for High Pressure Applications |
EN 10297 - 2 |
Stainless Steel Seamless Tubes for General Applications |
EN 10296 - 2 |
Stainless Steel Welded Tubes for General Applications |
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Few Customers Reference |
No. |
Name |
Full Form |
1 |
ORPC - OMAN |
Oman Refineries and Petrochemicals Co. LLC |
2 |
MRPL |
Mangalore Refinery & Petrochemicals Ltd. |
3 |
Godrej |
|
4 |
BCPL |
Brahmaputra Crackers & Polymers Ltd. |
5 |
BHPV |
Bharat Heavy Plate & vessels Ltd |
6 |
APL |
Aasaam Petrochemical Limited |
7 |
L & T |
Larsen & Turbo |
8 |
GPL |
Ganson Petrochemical Limited |
9 |
RIL |
Reliance Industries Ltd. |
10 |
Thermax |
|
11 |
CPCL |
Chennai Petroleum Corporation Ltd. |
12 |
GNFC |
Gujarat Narmada Valley Fertilizers Co. Ltd. |
13 |
Dolphin |
|
14 |
BARC |
Bhabha Atomic Research Centre |
15 |
GSFC |
Gujarat State Fertilizers & Chemicals Ltd. |
16 |
BHEL |
Bharat Heavy Electrical Limited |
17 |
IOCL - Paradeep |
Indian Oil Corporation Limited |
18 |
ISGEC |
|
19 |
Renishaw |
|
20 |
Essar |
|
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