AST YST 240 90 NB MS CHS - (101.6 x 4 mm) - 6 mtr Length
AST YST 240 90 NB MS CHS - (101.6 x 4 mm) - 6 mtr Length
Specifications
| Diameter | 101.6 mm |
|---|---|
| Length | 6 m |
| Nominal Bore | 90 NB |
| Thickness | 4 mm |
Description
Engineered for omnidirectional structural performance, the AST YST 240 90 NB MS CHS - (101.6 x 4 mm) - 6 mtr Length by AST PIPES is a certified ERW CHS in YST 240 structural steel aligned with IS 1161:2014 (Steel Tubes for Structural Purposes). The 101.6 mm × 4 mm (90 NB) cross-section in 6 m lengths is a large-diameter circular section engineered for primary structural columns, heavy trusses, and industrial frames delivering elevated yield strength for demanding structural columns and medium-span trusses, consistent wall uniformity, and superior torsional and bending stiffness for industrial frameworks, mezzanine columns, portal frames, and architectural exposed tubes. The smooth circular external profile simplifies architectural detailing and enables clean, efficient connections on all sides with standard flanges, saddle clamps, or welded brackets.
Key Features:- IS 1161:2014 compliant CHS in YST 240 — IS-marked for certified structural assurance
- Section: 101.6 mm OD × 4 mm wall | 90 NB — suitable for structural and mechanical applications
- Manufactured via ERW process for consistent, strong, and flush weld seam integrity
- Yield strength 240 MPa enables efficient section sizing and reduced steel tonnage
- Standard 6 m lengths ready for immediate workshop fabrication or site deployment
- Excellent formability — can be cold-bent to standard radii without cracking or wrinkling
- Aerodynamically and aesthetically favourable circular profile for exposed structural use
- Compatible with standard CHS connections: CHS-to-CHS, CHS-to-plate, and end-plate details
- Passes hydrostatic test requirements as per applicable IS norms where specified
- Clearly bundled and labelled by grade and size for easy site identification and handling
- Automotive and vehicle body sub-frames, chassis reinforcement tubes, and roll cages
- Modular and prefabricated construction structural tubular components
- Railway platform columns, bridge hangers, and pedestrian walkway support tubes
- Water treatment and sewage plant structural frameworks and elevated walkway supports
- Airport terminal, shopping mall, and long-span commercial building column sections
- Machinery guards, safety enclosures, and protective barrier frames in factories
- Military and defence fabrication: shelters, antenna masts, and vehicle reinforcements
Specifications
| Base | Detail |
|---|---|
| Diameter | 101.6 mm |
| Length | 6 m |
| Nominal Bore | 90 NB |
| Thickness | 4 mm |
Mechanical & Chemical Composition
Main Specifications
| Base | Detail |
|---|
Chemical Composition
| Base | Detail (%) |
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