Hot-dip Galvanized Carbon Steel Tubes Technical Requirements
| Technical Specifications | |
| • Material | Hot-dip galvanized carbon steel; |
| • Coating | Zinc layer applied using the hot galvanizing process, with a minimum thickness in accordance with applicable standards; |
| • Length | Bars from 5.8 to 6 meters (or as required by the project) |
| • Wall Thickness | According to applicable NBR, ASTM or DIN standards; |
| Standards and Regulations | |
| • NBR 5580 | Galvanized carbon steel tubes with or without seams for conveying fluids; |
| • ASTM A53 / A53M | Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless; |
| • DIN 2440 | Steel tubes, medium-weight, suitable for screwing |
| • BS 1387 | Screwed and socketed steel tubes and tubulars and for plain end steel tubes suitable for welding or for screwing to BS21 pipe threades |
| Performance Characteristics | |
| Working Pressure | The gi pipe must withstand the working pressure for medium class piping of the NBR 5580 standard; |
| Corrosion Resistance | Due to the galvanization process, the pipes have high resistance to corrosion, suitable for use in drinking water supply systems; |
| Connectivity | The gi pipes allow secure and watertight connections with other system components (valves, fittings, etc.) through standard threads or other appropriate techniques |
Galvanized Tube Steel Grade and Standards
| GALVANIZED TUBES CARBON STEEL GRADE MATERIAL | ||||
| Standards | ASTM A53 / API 5L | JIS3444 | BS1387 / EN10255 | GB/T3091 |
| Steel Grade | Gr. A | STK290 | S195 | Q195 |
| Gr. B | STK400 | S235 | Q235 | |
| Gr. C | STK500 | S355 | Q355 | |
NBR 5580 Galvanized Steel Tube Sizes
| DN | OD | OD | Wall Thickness | Weight | ||||
| L | M | P | L | M | P | |||
| INCH | MM | (mm) | (mm) | (mm) | (kg/m) | (kg/m) | (kg/m) | |
| 15 | 1/2” | 21.3 | 2.25 | 2.65 | 3 | 1.06 | 1.22 | 1.35 |
| 20 | 3/4” | 26.9 | 2.25 | 2.65 | 3 | 1.37 | 1.58 | 1.77 |
| 25 | 1” | 33.7 | 2.65 | 3.35 | 3.75 | 2.03 | 2.51 | 2.77 |
| 32 | 1-1/4” | 42.4 | 2.65 | 3.35 | 3.75 | 2.6 | 3.23 | 3.57 |
| 40 | 1-1/2” | 48.3 | 3 | 3.35 | 3.75 | 3.35 | 3.71 | 4.12 |
| 50 | 2” | 60.3 | 3 | 3.75 | 4.5 | 4.24 | 5.23 | 6.19 |
| 65 | 2-1/2” | 76.1 | 3.35 | 3.75 | 4.5 | 6.01 | 6.69 | 7.95 |
| 80 | 3” | 88.9 | 3.35 | 4 | 4.5 | 7.07 | 8.38 | 9.37 |
| 90 | 3-1/2" | 101.6 | 3.75 | 4.25 | 5 | 9.05 | 10.2 | 11.91 |
| 100 | 4” | 114.3 | 3.75 | 4.5 | 5.6 | 10.22 | 12.19 | 15.01 |
| 125 | 5” | 139.7 | - | 4.75 | 5.6 | 15.81 | 18.52 | |
| 150 | 6” | 165.1 | - | 5 | 5.6 | 19.74 | 22.03 | |
High Quality Guaranteed
1) During and after production, QC staffs with more than 5 years experience inspect products in random.
2) National accredited laboratory with CNAS certificates
3) Acceptable inspection from third party appointed/paid by buyer, such as SGS, BV.
4) Approved by Malaysia, Indonesia, Singapore, Philippines, Australia, Peru and UK.
Other Related Steel Galvanized Products
Malleable Galvanized Fittings,
Malleable Galvanized Fittings Inner Plastic Coated
Construction Galvanized Square Pipe,
Solar Structure Steel Pipes,
Structure Steel Pipes
