Carbon Steel Pipe

Description

Carbon Steel Pipe produced by using Electric resistance welding (ERW) process where metal parts in contact are permanently joined by heating them with an electric current, melting the metal at the joint to create a straight welding line. The electric current can be supplied to electrodes that also apply clamping pressure, or may be induced by an external magnetic field. The electric resistance welding process can be further classified by the geometry of the weld and the method of applying pressure to the joint: spot welding, seam welding, flash welding, projection welding, for example. Some factors influencing heat or welding temperatures are the proportions of the workpieces, the metal coating or the lack of coating, the electrode materials, electrode geometry, electrode pressing force, electrical current and length of welding time. Small pools of molten metal are formed at the point of most electrical resistance (the connecting or "faying" surfaces) as an electrical current is passed through the metal. In general, the range of thickness is usually not more than 8 mm. and outer diameter ½ - 8 inches.
The customers able to customize the length of its specific pipe. Moreover, they can identify the steel surfaces according to external coating and colors, for example, red oxide, coated varnish, hot-dip galvanizing, etc.
Production capacity of black carbon round and square pipe
•   Capacity : ½” – 8”
•   Thickness : 1.2 – 8.0 mm
•   Type : Smooth Edge and Threaded Edge

Industrial Standard

The Industrial standards are divided into 2 major type of works which are;
1. Construction and Architecture work; for example, roof structure, stadium, handrail, handrail, handle, stair, fence, etc. Which have the following Industrial standards;

  • TIS 107
  • TIS 276
  • BS 1387
  • JIS G3444
  • JIS G3452 (SGP)
  • ASTM A500
  •  AS 1163
  • EN 10219

2. Transport liquid system: Water supply and drain. For instance, water pipes, fire suppression systems, coolant pipe system,moisture pipe systems, etc. Which have the following Industrial standards;

  • TIS 277
  • TIS 427
  • BS 1387
  • JIS G 3452
  • ASTM A53
  • EN 10255
  • DIN 2440
  • UL 852 Standard for Safety for Metallic Sprinkler Pipe for Fire Protection Service
  • MWA & PWA

 

Production Process

 

Reference Size of Round Pipe
Classification based on JIS G 3444

Outside Diameter Thickness Weight
Specification
Cross
sectional area
Geometrical
moment of Inertia
Modulus of
section
Radius of
gyration of area
mm. mm. kg/m. cm2 cm4 cm3 cm
21.7 2.00 0.972 1.238 0.607 0.56 0.70
27.2 2.00 1.24 1.583 1.26 0.93 0.89
                          2.30 1.41 1.799 1.41 1.03 0.88
34.0 2.30 1.80 2.291 2.89 1.70 1.12
42.7 2.30 2.29 2.919 5.97 2.80 1.43
  2.50 2.48 2.157 6.40 3.00 1.42
48.6 2.30 2.63 3.345 8.99 3.70 1.64
  2.50 2.84 3.621 9.65 3.97 1.63
  2.80 3.16 4.029 10.60 4.36 1.62
  3.20 3.58 4.564 11.80 4.86 1.61
60.5 2.30 3.30 4.205 17.80 5.90 2.06
  3.20 4.52 5.760 23.70 7.84 2.03
  4.00 5.57 7.100 28.50 9.41 2.00
76.3 2.80 5.08 6.465 43.70 11.50 2.60
  3.20 5.77 7.349 49.20 12.90 2.59
  4.00 7.13 9.850 59.50 15.60 2.58
89.1 2.80 5.96 7.591 70.70 15.90 3.05
  2.50 2.48 8.636 79.80 17.90 3.04
101.6 3.20 7.76 9.892 120.00 23.60 3.48
  4.00 9.63 12.260 146.00 28.80 3.45
  5.00 11.90 15.170 177.00 34.90 3.42
114.3 3.20 8.77 11.170 172.00 30.20 3.93
  3.50 9.58 12.180 187.00 32.70 3.92
  4.50 12.20 15.520 234.00 41.00 4.89
139.8 3.60 12.10 15.400 357.00 51.10 4.82
  4.00 13.40 17.070 391.40 56.30 4.80
  4.50 15.00 19.130 438.00 62.70 4.79
  6.00 19.80 25.220 566.00 80.20 4.74
165.2 4.50 17.80 22.720 734.00 88.90 5.68
  5.00 19.80 25.160 808.00 97.80 5.67
  6.00 23.60 30.010 952.00 115.00 5.63
  7.10 27.70 35.260 110 x 10 134.00 5.60
190.7 4.50 20.70 26.320 114 x 10 120.00 6.59
  5.30 24.20 30.870 133 x 10 139.00 6.56
  6.00 27.30 34.820 149 x 10 156.00 6.53
  7.00 31.70 40.400 171 x 10 179.00 6.50
  8.20 36.90 47.010 196 x 10 206.00 7.46
216.3 4.50 23.50 29.940 168  x 10 155.00 7.49
  5.80 30.10 38.360 213 x 10 197.00 7.45
  6.00 31.10 39.640 219 x 10 203.00 7.44
  7.00 36.10 46.030 252 x 10 233.00 7.40
  8.00 41.10 52.350 284 x 10 263.00 7.37
  8.20 42.10 53.610 291 x 10 269.00 7.36

Dimension Tolerance
On Outside Diameter : 

  • Under 50 mm.   : +/- 0.5 mm.
  • 50 mm. or over : +/-1.0%

On Wall Thickness : 

  • Under 4.0 mm. : + 0.6 mm., -0.5 mm.
  • 4.0 mm. or over to and excl. 12.0 mm. : +15%, -12.5%
  • 12.0 mm. or over : +15%, -1.5 mm.

Reference Size of Square Pipe
Classification based on JIS G 3466

Rectangular Pipe
Size (A x B) Thickness Weight Packing
Inch. mm. mm. kg/m. kg./6m. Amount/packing
2 x 1 50.8 x 25.4 1.20 1.36 8.17 135
    1.60 1.78 10.69 135

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