aljazera-steel-pipes

ALJAZERA STEEL (PIPES)

ALJAZERA-STEEL

Al Jazeera has become one of the leading steel tube & structural products manufacturers in the Middle East.Al Jazeera offers Mild Steel ERW tubular products in both Black and Galvanized class with plain end and threaded and coupled ends conforming to API, ASTM, BS, DIN, EN and other international standards.At Al Jazeera, production processes have been integrated with modern Quality Control like on-line Eddy Current Testing facility, Optical Emission Spectrometer, Universal Testing Machine, Hardness Tester and Inverted Metallurgical Microscope with CCD camera attachment etc.

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TECHNICAL DATA OF BLACK AND HOT DIP GALVANIZED STEEL PIPES CONFORMING TO ASTM A 53 GRADE A & B SCH-40

  OUTSIDE DIAMETER WALL THICKNESS WEIGHT OF BLACK PIPES TEST PRESSURE SOCKET DIMENSIONS NO. OF PCS
PER LIFT
NOMINAL PIPE SIZE STANDARD STANDARD PLAIN END GRADE A GRADE B MIN OUTSIDE DIA MIN LENGTH
INCH MM INCH MM INCH MM KG/MTR MTR/TON LB/FT FT/TON PSI KPA PSI KPA INCH MM INCH MM
1/2 15 0.840 21.3 0.109 2.77 1.27 787 0.85 2583 700 4800 700 4800 1.063 27.0 1.500 38.1 120
3/4 20 1.050 26.7 0.113 2.87 1.69 592 1.13 1941 700 4800 700 4800 1.313 33.4 1.563 39.7 84
1 25 1.315 33.4 0.133 3.38 2.50 400 1.68 1312 700 4800 700 4800 1.576 40.0 1.938 49.2 60
1.1/4 32 1.660 42.2 0.140 3.56 3.39 295 2.27 968 1200 8300 1300 9000 1.900 48.3 2.000 50.8 42
1.1/2 40 1.900 48.3 0.145 3.68 4.05 247 2.72 810 1200 8300 1300 9000 2.200 55.9 2.000 50.8 36
2 50 2.375 60.3 0.154 3.91 5.44 184 3.66 603 2300 15900 2500 17200 2.750 69.8 2.063 52.4 26
2.1/2 65 2.875 73.0 0.203   8.63 116 5.80 380 2500 17200 2500 17200 3.250 82.5 3.063 77.8 18
3 80 3.500 88.9 0.216 5.49 11.29 89 7.58 291 2220 15300 2500 17200 4.000 101.6 3.188 81.0 14
3.1/2 90 4.000 101.6 0.226 5.74 13.57 74 9.12 242 2030 14000 2370 16300 4.625 117.5 3.313 84.1 12
4 100 4.500 114.3 0.237 6.02 16.07 62 10.80 204 1900 13100 2210 15200 5.000 127.0 3.438 87.3 10
5 125 5.563 141.3 0.258 6.55 21.77 46 14.63 151 1670 11500 1950 13400 6.296 159.9 3.688 93.7 7
6 150 6.625 168.3 0.280 7.11 28.26 35 18.99 116 1520 10500 1780 12300 7.390 187.7 4.938 125.4 7
8 200 8.625 219.1 0.322 8.18 42.55 24 28.58 79 1340 9200 1570 10800 -- -- -- --

 

CHEMICAL COMPOSITION (% MAX)

ELEMENT ---> Carbon Manganese Phosphorus Sulphur Copper Nickel Chromium Molybdenum Vanadium
C Mn P S Cu Ni Cr Mo V
GRADE-A    0.25 0.95 0.05 0.045 0.40 0.40 0.40 0.15 0.08
GRADE-B    0.30 1.20 0.05 0.045 0.40 0.40 0.40 0.15 0.08

HEAT TREATMENT - Weld seam of the ERW pipe in Grade-B shall be heat treated after welding to a minimum temperature of 10000F[5400C] so that no untempered martensite remains.

 

MECHANICAL PROPERTIES

PROPERTIES ---> Tensile Strength Yield Strength
psi MPa psi MPa
GRADE-A    48000 330 30000 205
GRADE-B    60000 415 35000 240

Min Percentage Elongation in 2"[ 50mm] rounded to nearest 1/2

 e = 625,000[1940]  x  (A0.2/U0.9)

A = cross sectional area of the tension specimen, rounded to the nearest 0.01 inch2[1mm2], based on specified outside diameter. If the area is more than 0.75 inch2 [500mm2], then the value 0.75 inch2 [500mm2] shall be used.

U = specified minimum tensile strength, psi[MPa].

 

TOLERANCES

OUTSIDE DIAMETER 

SIZE FROM SIZE TO TOLERANCE INCH(MM)
INCH (MM) INCH (MM) POSITIVE NEGATIVE
1/2 (15) 1.1/2(40) 1/64 (0.40) 1/64 (0.40)
2 (50) 8 (200) 1% OF OD 1% OF OD

THICKNESS: 12.5% max under the nominal wall thickness.

WEIGHT:  + / - 10% on calculated standard weight.

END FINISH

Square Cut Ends for sizes less than or equal to 1.1/2" NPS
Beveled Ends at 300  -00/+50 for sizes 2" NPS and above.

BEND TEST

Applicable for sizes 2" NPS and below 90o bending radius should be 6 times of the tube diameter.

FLATTENING TEST

Applicable for sizes 2" NPS and above in three stages.

STAGE-1 : For weld ductility until 2/3 of outside dia of specimen tube.
STAGE-2 : For ductility of steel until 1/3 of outside dia of specimen tube.
STAGE-3 : Full flattening for testing of laminated and unsound material.

ZINC COATING

MINIMUM  : 1.60 oz / ft2 [490 Gm / Mtr2]
AVERAGE : 1.80 oz / ft2 [550 Gm / Mtr2]

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