Inquiry Download Brochure

IIL Galvanized Iron Pipes (GI)

IIL galvanized (GI) pipes are made from prime quality steel coil and galvanized using the highest quality zinc.

IIL Galvanized Iron (GI) pipes are corrosion and rust resistant pipes that are ideal for the transmission of potable water, natural gas, oil and other fluids. They are also used in fencing, low cost shelters and general fabrication.

IIL GI pipes are certified as European Conformity Standards (CE) and are manufactured in accordance with the highest international standards (BS EN 10255:2004, ASTM A53, ASTM A795, EN39, SLS829:2009)

IIL GI pipes are available in nominal diameters of 15mm (1/2”) to 200mm (8”) and in thickness from 1.80mm to 5.40mm.

IIL also offers:

  • Swaging
  • Screwed & socketed pipe
  • Cut-to-length pipe
  • Close tolerance cutting
  • Painted pipe
  • Red primer pipe
  • Black pipe, varnished or oiled
  • Internal seam removal

Applications

  • Fluid/Oil/Water Transmission
  • Natural Gas Distribution
  • Fencing
  • Low Cost Shelters/Housing
  • General Fabrication

International Standards

  • Straightness
  • Thickness/Weight/Length
  • Corrosion Resistance
  • Mass of zinc coating

Product Testing Features

  • Can bear Hydro pressure up to 50 bar
  • Leak free (NDT Tested)
  • Thoroughly tested weld (bending & flattening)

Salient Features

  • Environmentally friendly. state-of-the-art manufacturing facility
  • Air blown exterior and steam blown interior
  • Individually chromated
  • Guaranteed tube count per bundle
  • Over 50 years of manufacturing experience and exporting to 60 countries
  • Certification: ISO Standards 9001, 14001, ISO 45001 and CE
GI PRODUCT RANGE - GRADE "EEEL" (TO IIL STANDARD)
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
25 1" 33.50 32.80 1.60 1.245 680 803 91
32 11/4" 42.20 41.60 1.60 1.590 582 629 61
40 11/2" 48.10 47.50 1.60 1.823 667 549 61
50 2" 60.20 59.30 1.60 2.295 509 436 37
65 21/2" 75.70 74.90 2.00 3.615 803 280 37
80 3" 88.40 87.60 2.00 4.242 611 236 24
100 4" 113.50 112.60 2.30 6.282 716 159 19
GI PRODUCT RANGE - GRADE "EEL" (TO IIL STANDARD)
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
15 1/2" 21.00 20.60 1.60 0.758 769 1319 169
20 3/4" 26.60 26.10 1.60 0.977 744 1024 127
25 1" 33.50 32.80 2.00 1.536 839 651 91
32 11/4" 42.20 41.60 2.00 1.968 720 508 61
40 11/2" 48.10 47.50 2.00 2.259 827 443 61
50 2" 60.20 59.30 2.00 2.848 632 351 37
65 21/2" 75.70 74.90 2.30 4.140 919 242 37
80 3" 88.40 87.60 2.30 4.861 700 206 24
100 4" 113.50 112.60 2.60 7.082 807 141 19
GI PRODUCT RANGE - GRADE "EL" (TO IIL STANDARD)
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
15 1/2" 21.00 20.60 1.80 0.843 855 1186 169
20 3/4" 26.60 26.10 2.00 1.201 915 833 127
25 1" 33.50 32.80 2.30 1.750 956 571 91
32 11/4" 42.20 41.60 2.30 2.246 822 445 61
40 11/2" 48.10 47.50 2.60 2.898 1061 345 61
50 2" 60.20 59.30 2.60 3.664 813 273 37
65 21/2" 75.70 74.90 2.90 5.178 1150 193 37
80 3" 88.40 87.60 2.90 6.086 876 164 24
100 4" 113.50 112.60 3.20 8.668 988 115 19
125 5" 139.00 138.00 3.60 11.977 503 83 7
150 6" 165.00 163.00 3.60 14.241 598 70 7
GI PRODUCT RANGE - GRADE "L2" (BS EN 10255-2004) FORMERLY "L" OF BS 1387:1985
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
15 1/2" 21.40 21.00 2.00 0.947 1053 1056 169
20 3/4" 26.90 26.40 2.30 1.380 725 725 127
25 1" 33.80 32.20 2.60 1.980 505 505 91
32 11/4" 42.50 41.90 2.60 2.540 394 394 61
40 11/2" 48.40 47.80 2.90 3.230 310 310 61
50 2" 60.20 59.60 2.90 4.080 245 245 37
65 21/2" 76.00 75.20 3.20 5.710 175 175 37
80 3" 88.70 87.90 3.20 6.720 149 149 24
100 4" 113.90 113.00 3.60 9.750 103 103 19
GI PRODUCT RANGE - GRADE "M" (BS EN 10255-2004) FORMERLY "M" OF BS 1387:1985
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
15 1/2" 21.80 21.00 2.60 1.210 826 826 169
20 3/4" 27.30 26.50 2.60 1.560 641 641 127
25 1" 34.20 33.30 3.20 2.410 415 415 91
32 11/4" 42.90 42.00 3.20 3.100 323 323 61
40 11/2" 48.80 47.90 3.20 3.560 281 281 61
50 2" 60.80 59.70 3.60 5.030 199 199 37
65 21/2" 76.60 75.30 3.60 6.420 156 156 37
80 3" 89.50 88.00 4.00 8.360 120 120 24
100 4" 115.00 113.10 4.50 12.200 82 82 19
125 5" 140.80 138.50 5.00 16.600 60 60 7
150 6" 166.50 163.90 5.00 19.800 51 51 7
GI PRODUCT RANGE - GRADE "H" (BS EN 10255-2004) FORMERLY "H" OF BS 1387:1985
NOMINAL DIA NOMINAL DIA OUTER DIA WALL THICKNESS STANDARD PIPE WEIGHT STANDARD PIPE BUNDLE WEIGHT (6M LENGTH) LENGTH OF BLACK PIPE PIPES PER  BUNDLE
MAXIMUM MINIMUM
(mm) (Inch) (mm) (mm) (mm) (Kg/m) (Kg) (Mtr/Ton) (Number)
40 11/2" 48.80 47.90 4.00 4.370 229 229 61
50 2" 60.80 59.70 4.50 6.190 162 162 37
65 21/2" 76.60 75.30 4.50 7.930 126 126 37
80 3" 89.50 88.00 5.00 10.300 97 97 24
100 4" 115.00 113.10 5.40 14.500 69 69 19
125 5" 140.80 138.50 5.40 17.900 56 56 7
150 6" 166.50 163.90 5.40 21.300 47 47 7

Frequently Asked Questions

Where is galvanized iron pipe most commonly used?

Galvanized iron (GI) pipes are commonly used for transporting potable water, natural gas, oil, and other fluids. They are also applied in irrigation, outdoor plumbing, and construction frameworks due to their strength and corrosion resistance. GI pipes are frequently used in residential buildings for exposed water transmission. GI pipes by International Industries are made from prime quality steel coil and galvanized using high-quality zinc.

What international standards do GI pipes follow?

Galvanized iron pipes from International Industries meet key international standards for straightness, thickness, weight, length, and corrosion resistance. They comply with zinc coating requirements for long-lasting durability and consistent performance. These pipes are certified under European Conformity (CE) standards and manufactured in accordance with BS EN 10255:2004, ASTM A53, ASTM A795, EN39, and SLS829:2009.

Which class of GI pipe is best?

• Medium-grade "M" pipes are commonly used for water supply and distribution in domestic, municipal, or rural applications, as well as low-pressure fluid and gas lines.
• Light-grade "L2" pipes are suitable for light structural work, scaffolding, or general fabrication where minimal load and cost-efficiency are priorities.
• Heavy-grade "H" pipes are used for higher strength and durability, suitable for industrial piping, high-pressure applications, or exposed infrastructure.
For general fabrication requiring strength and corrosion resistance, "H" and "M" grades are commonly chosen based on required thickness and durability.

What is the difference between steel pipe and galvanized pipe?

Black or mild steel (MS) pipes are made from raw steel and can rust when exposed to moisture. Galvanized pipes are coated with zinc, which protects against rust and corrosion. This makes galvanized pipes more durable and suitable for water and outdoor applications, while plain steel pipes are often used in structural or industrial settings.

What is the difference between pre-galvanized and galvanized pipes?

Pre-galvanized pipes are coated before forming, resulting in a thinner layer suitable for indoor or low-corrosion applications. Galvanized pipes are coated after forming by dipping into molten zinc, creating a thicker, more durable layer for outdoor or high-moisture environments.