For over a decade, Latham Steel has been a trusted manufacturing partner right here in Hamilton, providing reliable steel solutions to New Zealand’s industrial and construction sectors. We take pride in our hands-on approach and deep understanding of local project needs. Among our core offerings is the dependable Carbon Steel A53 Grade A Pipe, a product we supply with the confidence that comes from rigorous quality control and a commitment to supporting the backbone of our national infrastructure.
This specific grade of carbon steel pipe is known for its practical balance of strength and workability. Its composition is straightforward, primarily iron with carefully measured amounts of carbon, manganese, phosphorus, and sulfur. This gives it excellent mechanical properties, including a minimum yield strength of 30,000 psi, which allows it to handle substantial pressure and structural loads without failing, making it a go-to choice for a wide array of heavy-duty applications.
Standard :Â ASTM A53 / ASME SA53
Size : NPS 1/8” to NPS 26” | DN 6 to DN 650.
Type :Â Seamless/ Welded / ERW
Schedule :Â SCH 40, SCH 80, SCH 160, SCH XS, SCH XXS, All Schedules
Packing :Â In bundles, Anticorrosion heat preservation, Varnish coating, Ends can be bevelled or square cut, End Capped Certification & supplementary test, Finishing & Identity Mark
Surface Protection :Â Black (Self Coloured uncoated), Varnish/Oil Coating, Pre-Galvanized, Hot Dip Galvanized
End :Â Plain End, Beveled End, Screwed, Treaded
Length : Single Random, Double Random & Required Length, Custom Size – 12 Meter lengths
| ASTM A53 | C | Mn | P | S | Cu | Ni | Cr | Mo | V |
| Grade A | 0.25 | 0.95 | 0.05 | 0.045 | 0.4 | 0.4 | 0.4 | 0.15 | 0.08 |
| Tensile Strength, min., psi, (MPa) | Yield Strength, min., psi, (MPa) |
| 48,000 (330) | 30,000 (205) |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
| NB | Size | OD | 40S | 5S | 10S | S10 | S20 | S40 | S60 | XS/80S | S80 | S100 | S120 | S140 | S160 | XXS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | ||
|  | 1/8” | 10.29 |  |  | 1.2 |  |  | 1.73 |  |  | 2.41 |  |  |  |  |  |
|  | 1/4” | 13.72 |  |  | 1.7 |  |  | 2.24 |  |  | 3.02 |  |  |  |  |  |
|  | 3/8” | 17.15 |  |  | 1.7 |  |  | 2.31 |  |  | 3.2 |  |  |  |  |  |
| 15 | 1/2” | 21.34 | 2.8 | 1.7 | 2.1 |  |  | 2.77 |  | 3.73 | 3.73 |  |  |  | 4.78 | 7.47 |
| 20 | 3/4” | 26.67 | 2.9 | 1.7 | 2.1 |  |  | 2.87 |  | 3.91 | 3.91 |  |  |  | 5.56 | 7.82 |
| 25 | 1” | 33.4 | 3.4 | 1.7 | 2.8 |  |  | 3.38 |  | 4.55 | 4.55 |  |  |  | 6.35 | 9.09 |
| 32 | 1 1/4” | 42.16 | 3.6 | 1.7 | 2.8 |  |  | 3.56 |  | 4.85 | 4.85 |  |  |  | 6.35 | 9.7 |
| 40 | 1 1/2” | 48.26 | 3.7 | 1.7 | 2.8 |  |  | 3.68 |  | 5.08 | 5.08 |  |  |  | 7.14 | 10.2 |
| 50 | 2” | 60.33 | 3.9 | 1.7 | 2.8 |  |  | 3.91 |  | 5.54 | 5.54 |  |  |  | 9.74 | 11.1 |
| 65 | 2 1/2” | 73.03 | 5.2 | 2.1 | 3.1 |  |  | 5.16 |  | 7.01 | 7.01 |  |  |  | 9.53 | 14 |
| 80 | 3” | 88.9 | 5.5 | 2.1 | 3.1 |  |  | 5.49 |  | 7.62 | 7.62 |  |  |  | 11.1 | 15.2 |
| 90 | 3 1/2” | 101.6 | 5.7 | 2.1 | 3.1 |  |  | 5.74 |  | 8.08 | 8.08 |  |  |  |  |  |
| 100 | 4” | 114.3 | 6 | 2.1 | 3.1 |  |  | 6.02 |  | 8.56 | 8.56 |  | 11.1 |  | 13.5 | 17.1 |
| 125 | 5” | 141.3 | 6.6 | 2.8 | 3.4 |  |  | 6.55 |  | 9.53 | 9.53 |  | 12.7 |  | 15.9 | 19.1 |
| 150 | 6” | 168.3 | 7.1 | 2.8 | 3.4 |  |  | 7.11 |  | 10.97 | 11 |  | 14.3 |  | 18.3 | 22 |
| 200 | 8” | 219.1 | 8.2 | 2.8 | 3.8 |  | 6.4 | 8.18 | 10.3 | 12.7 | 12.7 | 15.1 | 19.3 | 20.6 | 23 | 22.2 |
| 250 | 10” | 273.1 | 9.3 | 3.4 | 4.2 |  | 6.4 | 9.27 | 12.7 | 12.7 | 15.1 | 19.3 | 21.4 | 25.4 | 28.6 | 25.4 |
| 300 | 12” | 323.9 | 9.5 | 4 | 4.6 |  | 6.4 | 10.3 | 14.3 | 12.7 | 17.5 | 21.4 | 25.4 | 28.6 | 33.3 | 25.4 |
| 350 | 14” | 355.6 | 9.5 | 4 | 4.8 | 6.4 | 7.9 | 11.1 | 15.1 | 12.7 | 19.1 | 23.8 | 27.8 | 31.8 | 35.7 |  |
| 400 | 16” | 406.4 | 9.5 | 4.2 | 4.8 | 6.4 | 7.9 | 12.7 | 16.7 | 12.7 | 21.4 | 26.2 | 31 | 36.5 | 40.5 |  |
| 450 | 18” | 457.2 | 9.5 | 4.2 | 4.8 | 6.4 | 7.9 | 14.3 | 19.1 | 12.7 | 23.8 | 29.4 | 34.9 | 39.7 | 45.2 |  |
| 500 | 20” | 508 | 9.5 | 4.8 | 5.5 | 6.4 | 9.5 | 15.1 | 20.6 | 12.7 | 26.2 | 32.5 | 38.1 | 44.5 | 50 |  |
| 550 | 22” | 558.8 | 9.5 | 4.8 | 5.5 | 6.4 | 9.5 |  | 22.2 | 12.7 | 28.6 | 34.9 | 41.3 | 47.6 | 54 |  |
| 600 | 24” | 609.6 | 9.5 | 5.5 | 6.4 | 6.4 | 9.5 | 17.5 | 24.6 | 12.7 | 31 | 38.9 | 46 | 52.4 | 59.5 |  |
| 650 | 26” | 660.4 | 9.5 |  |  | 7.9 | 13 |  |  | 12.7 |  |  |  |  |  |  |
| 700 | 28” | 711.2 | 9.5 |  |  | 7.9 | 13 |  |  | 12.7 |  |  |  |  |  |  |
| 750 | 30” | 762 | 9.5 | 6.4 | 7.9 | 7.9 | 13 |  |  | 12.7 |  |  |  |  |  |  |
| 800 | 32” | 812.8 | 9.5 |  |  | 7.9 | 13 | 17.5 |  | 12.7 |  |  |  |  |  |  |
| 850 | 34” | 863.6 | 9.5 |  |  | 7.9 | 13 | 17.5 |  | 12.7 |  |  |  |  |  |  |
| 900 | 36” | 914.4 | 9.5 |  |  | 7.9 | 13 | 19.1 |  | 12.7 |  |  |  |  |  |  |
Latham Steel is a top manufacturer and supplier of high-quality Carbon Steel A53 Gr A Pipe products in Hamilton, New Zealand. Specializing in steel solutions, we provide a wide range of products, including Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel. Our offerings include Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates. Known for our reliable delivery and superior customer service, we are committed to offering top-tier steel materials that ensure durability and performance across a wide range of industrial applications. We strive to meet the highest standards, making us a trusted partner for all your steel needs.
The versatility of A53 Gr A pipe makes it a common sight on countless job sites. You’ll find it forming the essential framework for plumbing and fire protection systems, safely conveying water, oil, and gas. Beyond pipelines, its structural integrity is trusted for fencing, scaffolding, and various construction supports. From major infrastructure projects to smaller industrial applications, this pipe is a fundamental component, valued for its proven reliability and ability to perform consistently under demanding conditions.
Latham Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Hamilton, New Zealand.
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