Ø101.6×5.74 mm (NPS 3 1/2" DN 90 Sch 40) ASTM A53 Steel Pipe
101.6x5.74mm Steel water & gas pipe in ASTM A53 Grade A to ASTM A53/A53M, with an uncoated steel surface suitable for further processing or painting. Nominal weight 13.569655 kg/m.
Minimum order
Minimum 10 t per size. If the size is already in the current production cycle, we can accept orders from 5 t. Standard length 6 m; 4–12 m on request. We confirm the minimum, lead time and grade in your quote.
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Minimum order: 62 pieces
Minimum order: 10 t per size (from 5 t if the size is in production)
Applications & Usage
This heavy-duty structural Steel water & gas pipe is commonly specified for framework, support structures, machinery bases, and industrial equipment. The 5.74mm wall thickness provides superior load-bearing capacity while maintaining workability. The natural mill finish provides a cost-effective solution for applications where aesthetics are secondary. Available in standard lengths of 6m, this profile can be easily cut, drilled, and welded to suit your specific requirements.
Technical Specifications
| Specification | Value |
|---|---|
| Dimensions | Ø 101.6mm × 5.74mm wall |
| Weight per Meter | 13.57 kg/m |
| Material | Steel |
| Alloy/Grade | ASTM A53 Grade A |
| Standard | ASTM A53/A53M |
| Standard Length | 6m |
| Nominal Size (NPS / DN) | NPS 3½" / DN 90 |
| OD × Wall (inch) | 4.000 × 0.226 in |
| Schedule | Sch 40 |
| Weight (lb/ft) | 9.12 lb/ft |
| Hydrostatic Test Pressure | 2030 psi (14 MPa) |
| Minimum Order per Size | 10 t |
| Cut-to-Length Range | 4000 – 12000 mm |
Section Properties
Nominal values calculated from nominal dimensions.
| Property | Value |
|---|---|
| Cross-sectional area(A) | 17.3 cm² |
| Second moment of area(I) | 199 cm⁴ |
| Radius of gyration(i) | 3.40 cm |
| Elastic section modulus(Wel) | 39.2 cm³ |
| Plastic section modulus(Wpl) | 52.8 cm³ |
| Torsional inertia constant(It) | 399 cm⁴ |
| Torsional modulus constant(Ct) | 78.5 cm³ |
| Surface area per metre(As) | 0.319 m²/m |
| Length per tonne | 73.7 m |
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