Chalco supplies 1350 and 1370 EC-grade aluminum bus pipes for substations, switchyards and power-equipment connections. These high-conductivity tubular busbars have published electrical conductivity references of approximately 61% and 62% IACS, respectively.
Available supply options include outside diameters of 60–450 mm, wall thicknesses of 3–15 mm and single lengths up to 15 m, together with drawing-based cutting, bending, welding and selected surface treatments.
1350 & 1370 Aluminum Bus Pipe Supply
- EC-grade conductor options: 1350 and 1370 aluminum tubular busbars for conductivity-focused electrical projects.
- Drawing-based sizes: Outside diameters of 60–450 mm, wall thicknesses of 3–15 mm and single lengths up to 15 m.
- Project supply support: Fabrication options, dimensional checks and agreed inspection documents for electrical-equipment procurement.
See the bus-pipe manufacturing and conductor supply capabilities for available processing options.
1350 & 1370 Aluminum Bus Pipe Specifications
For custom aluminum bus tubes, specify the actual outside diameter (OD) and wall thickness (WT). Standard bus pipes may also be ordered by nominal pipe size and schedule, such as SCH 40 or SCH 80.
| Temper | H111, H112, F (1350); H111, F (1370) |
| Outside diameter (OD) | Φ60mm-Φ450mm |
| Wall thickness (WT) | 3mm-15mm |
| Length |
The length of a single bus pipe can reach 15 meters; deviation:+15~+25mm |
| Curvature | m/L<2.0mm |
| Reference Size and Tolerance Tables | Click to view the [Size and Deviation Table] |
| Surface requirement | The surface is smooth and flat, without cracks, wrinkles, inclusions, deformation, or distortion. |
| Product requirement | Dimensional accuracy, straightness, surface finish and electrical testing can be specified against the approved drawing and purchase requirements. |
| Documents available upon request |
Certificate of origin; Invoice and PL certified by Chamber of Commerce; Test certificate according to EN 10204 3.1; Other test reports that may be requested by the customer. |
Specification note: Exact alloy–temper–size combinations, tolerances and inspection documents are agreed for the ordered configuration.
1350 & 1370 Aluminum Bus Pipe Electrical Properties
1350 and 1370 are EC-grade aluminum conductor options for projects prioritizing electrical performance. The values below are published product references for preliminary material selection.
| Property | 1350 | 1370 |
| Electrical conductivity (% IACS, reference) | ≈61 | ≈62 |
Technical note: Actual electrical acceptance values depend on the ordered product and test conditions. The alloy, temper and measurement temperature should be stated in the purchase specification.
1350 vs 1370 Aluminum Bus Pipes
-
1350 Aluminum Conductive Bus Pipe
1350 EC aluminum bus pipe is supplied for electrical projects requiring high-conductivity tubular conductors, with alloy and temper selected for the specified pipe geometry and connection requirements.
-
1370 Aluminum Conductive Bus Pipe
1370 EC aluminum bus pipe provides an additional high-purity conductor option for electrical applications, with published reference conductivity of approximately 62% IACS.
| Selection factor | 1350 Aluminum Bus Pipe | 1370 Aluminum Bus Pipe |
| Published conductivity reference (% IACS) | ≈61 | ≈62 |
| Listed temper options | H111 / H112 / F | H111 / F |
| Order specification | Alloy, temper, OD × WT, length and electrical requirements | Alloy, temper, OD × WT, length and electrical requirements |
1350 & 1370 Bus Pipe Selection and Ordering Guide
Choose 1350 or 1370 tubular conductors based on the required electrical performance, pipe dimensions, temper and connection design—not a fixed low-load versus high-load alloy ranking.
When a flat conductor section is specified instead of a tubular section, compare the material and connection requirements with 1350/1370 electrical aluminum busbars.
- Conductor requirements: Share the target conductivity or resistivity, operating conditions and any electrical-design requirements.
- Dimensions and temper: Provide NPS and schedule for specified bus pipes, or actual OD × wall thickness × length for custom bus tubes.
- Fabrication and inspection: Include bend, weld, joint, surface-treatment and certificate requirements from the drawing.
Share your alloy preference, electrical requirements, pipe dimensions, and fabrication drawings with Chalco. Our team will review your specifications and recommend suitable supply options for your project.
1350 & 1370 Bus Pipe Manufacturing & Electrical Conductor Supply
Chalco supplies 1350/1370 aluminum tubular conductors with drawing-based forming, finishing and fabrication for substation and power-equipment projects. Published production options include hollow-billet casting, three-roll rolling and cold drawing for selected bus-pipe configurations.
Fabrication and surface treatment: Cutting, bending, welding, drilling and selected tin, nickel or copper surface treatments support specified pipe connections and contact surfaces. For connection-surface considerations, see our tin-plated conductors guide.
Inspection and delivery support: Dimensional checks, conductivity-related inspection requirements, material documentation and long-length packing arrangements can be coordinated with the purchase specification.
For related EC-grade conductor feedstock by alloy, see 1350 aluminum wire rod and 1370 aluminum wire rod.
Benefits of 1350 & 1370 Aluminum Tubular Busbars
High-conductivity 1350/1370 aluminum and tubular conductor geometry support electrical bus designs where conductor weight, resistance and installation layout matter.
- Electrical conductor selection: EC-grade aluminum options for projects with specified conductivity or resistance requirements.
- Lower weight: Aluminum and hollow-section geometry help manage installed conductor weight.
- High-voltage geometry: Pipe diameter and surface quality are relevant to electric-field and corona-control design.
- Connection flexibility: Tubular sections can be adapted to specified supports and electrical-equipment connections.
Share your bus pipe specifications, fabrication drawings, and inspection requirements with Chalco. Our team can help match suitable manufacturing, processing, and supply options to your electrical project.
1350 & 1370 Aluminum Bus Pipe Applications
1350 and 1370 aluminum bus pipes are used as tubular conductors for substation and switchyard connections, electrical equipment interconnections and selected power-transmission projects. Buyers can specify pipe sections, connections and inspection requirements according to the project drawings.
For a broader comparison of tubular and flat conductor arrangements in electrical projects, see our electrical busbar solutions.
Main applications include:
- Current-carrying conductors in power construction projects
- Grid-to-substation conductor transitions
- Jumpers in overhead transmission lines
- Interconnections between major power equipment
- High-current DC de-icing systems
Bus Pipe Reference Sizes and Dimensional Tolerances
Reference-table scope: SCH 40/SCH 80 sizes use nominal pipe size and schedule. Custom bus tubes use actual OD and wall thickness. The following tolerance rows include tempers other than this page's 1350/1370 supply references and should be applied only where specified for the ordered product.
| Standard Bus Pipe Size References – SCH 40 / SCH 80 | ||||
| SCH 40 Nominal Pipe Size (NPS, in.) | Actual Outside Diameter (OD, in.) | Wall Thickness (in.) |
Area (sq. in.) |
Weight (lb/ft) |
| 1 | 1.315 | 0.133 | 0.4939 | 0.581 |
| 1.25 | 1.66 | 0.14 | 0.6685 | 0.786 |
| 1.5 | 1.9 | 0.145 | 0.7995 | 0.94 |
| 2 | 2.375 | 0.154 | 1.075 | 1.264 |
| 2.5 | 2.875 | 0.203 | 1.704 | 2.004 |
| 3 | 3.5 | 0.216 | 2.228 | 2.621 |
| 3.5 | 4 | 0.226 | 2.68 | 3.151 |
| 4 | 4.5 | 0.237 | 3.174 | 3.733 |
| 5 | 5.563 | 0.258 | 4.3 | 5.057 |
| 6 | 6.625 | 0.28 | 5.581 | 6.564 |
| 8 | 8.625 | 0.322 | 8.399 | 9.879 |
| SCH 80 Nominal Pipe Size (NPS, in.) | Actual Outside Diameter (OD, in.) | Wall Thickness (in.) |
Area (sq. in.) |
Weight (lb/ft) |
| 1 | 1.315 | 0.179 | 0.6388 | 0.751 |
| 1.25 | 1.66 | 0.191 | 0.8815 | 1.037 |
| 1.5 | 1.9 | 0.2 | 1.068 | 1.256 |
| 2 | 2.375 | 0.218 | 1.477 | 1.737 |
| 2.5 | 2.875 | 0.276 | 2.254 | 2.65 |
| 3 | 3.5 | 0.3 | 3.016 | 3.547 |
| 3.5 | 4 | 0.318 | 3.678 | 4.326 |
| 4 | 4.5 | 0.337 | 4.407 | 5.183 |
| 5 | 5.563 | 0.375 | 6.112 | 7.188 |
| 6 | 6.625 | 0.432 | 8.405 | 9.884 |
| 8 | 8.625 | 0.5 | 12.763 | 15.009 |
| Wall thickness deviation | ||||||||
| Nominal wall thickness | 3-5 | >5 -8 | >8-10 | >10-12 | >12-15 | >15 -20 | ||
| Ordinary level | Average & nominal wall thickness | ±0.30 | ±0.50 | ±0.70 | ±0.9 | ±1.10 | ±1.3 | |
| Any & nominal wall thickness | H14 | ±0.40 | ±0.60 | ±0.90 | ±1.10 | ±1.3 | ±1.6 | |
| T5A, T6, T10 | ±12% of the specified wall thickness, maximum value is 1.90 | |||||||
| High precision level | Average & nominal wall thickness | ±0.15 | ±0.20 | ±0.38 | ±0.50 | ±0.70 | ±1.00 | |
| Any & nominal wall thickness | H14 | ±0.2 | ±0.3 | ±0.5 | ±0.76 | ±1.00 | ±1.4 | |
| T5A, T6, T10 | ±10% of the specified wall thickness, maximum value is 1.70 | |||||||
| Outer diameter deviation | |||
| Nominal OD | Ordinary level | ||
| Average & Nominal outer diameter | Any & Nominal outer diameter | ||
| H14 | T5A, T6, T10 | ||
| 50.00-80.00 | ±0.24 | ±0.30 | ±0.45 |
| > 80.00-120.00 | ±0.35 | ±0.40 | ±0.62 |
| >120.00-150.00 | ±0.45 | ±0.50 | ±0.75 |
| >150.00-200.00 | ±0.65 | ±0.7 | ±1.00 |
| >200.00-250.00 | ±0.77 | — | ±1.2 |
| >250.00-300.00 | ±0.96 | ±1 | ±1.5 |
| >300.00-350.00 | ±1.3 | ±1.4 | ±1.8 |
| High precision level | |||
| Nominal OD | Average & Nominal outer diameter | Any & Nominal outer diameter | |
| H14 | T5A, T6, T10 | ||
| 50.00-80.00 | ±0.15 | ±0.15 | ±0.3 |
| > 80.00-120.00 | ±0.20 | ±0.20 | ±0.41 |
| >120.00-150.00 | ±0.25 | ±0.25 | ±0.5 |
| >150.00-200.00 | ±0.38 | ±0.38 | ±0.76 |
| >200.00-250.00 | ±0.50 | ±0.5 | ±1.00 |
| >250.00-300.00 | ±0.64 | ±0.64 | ±1.25 |
| >300.00-350.00 | ±0.9 | ±0.9 | ±1.6 |
Share your required bus pipe dimensions, tolerances, and technical specifications with Chalco. Our team will review your requirements and provide suitable supply options and a project quotation.
Related Aluminum Bus Pipe Alloys
Frequently Asked Questions
What is the conductivity of 1350 and 1370 aluminum bus pipes?
Published product reference values are approximately 61% IACS for 1350 and 62% IACS for 1370. Required test conditions and acceptance values should be specified for the order.
Is 1370 aluminum bus pipe always better for high-current applications?
No. Current capacity depends on conductor dimensions, resistance, allowable temperature rise and installation conditions. Compare the complete pipe design rather than alloy grade alone. For conductor terminology and configuration selection, see the busbar selection guide.
What is the difference between aluminum bus pipe and bus tube sizes?
Bus pipes are commonly specified by nominal pipe size and schedule; custom bus tubes are generally ordered by actual OD and wall thickness. Provide either designation or a drawing.
What sizes and fabrication services are available?
Published supply options include OD 60–450 mm, wall thickness 3–15 mm and single lengths up to 15 m, with cutting, bending, welding, drilling and selected surface treatments.
What information is needed for an aluminum bus pipe quotation?
Send the alloy, temper, NPS/schedule or OD × wall thickness × length, electrical requirements, drawings, quantity, inspection requirements and delivery destination.
Order 1350 & 1370 Aluminum Bus Pipes from Chalco
Chalco supports 1350/1370 EC aluminum bus pipe procurement with custom dimensions, drawing-based fabrication, selected surface treatments and agreed inspection documentation for electrical projects.
For a quotation: Share the required alloy and temper, NPS/schedule or OD × wall thickness × length, quantity, electrical specification, fabrication drawing and delivery destination. Our team will review the available supply configuration and project requirements.
Chalco can provide you the most comprehensive inventory of aluminum products and can also supply you customized products. Precise quotation will be provided within 24 hours.
Get a quote
