AST YST 310 200 NB MS CHS - (219.1 x 5.6 mm) - 6 mtr Length
AST YST 310 200 NB MS CHS - (219.1 x 5.6 mm) - 6 mtr Length
Specifications
| Diameter | 219.1 mm |
|---|---|
| Length | 6 m |
| Nominal Bore | 200 NB |
| Thickness | 5.6 mm |
Description
Precision-formed and IS-certified, the AST YST 310 200 NB MS CHS - (219.1 x 5.6 mm) - 6 mtr Length from AST PIPES is a cold-rolled ERW CHS in YST 310 structural steel conforming to IS 1161:2014 (Steel Tubes for Structural Purposes). The 219.1 mm OD × 5.6 mm wall (200 NB) section in 6 m lengths is a large-bore circular section designed for major structural columns, crane structures, and heavy industrial frameworks delivering the maximum yield strength enabling slender, efficient circular sections under heavy combined loads demanded by heavy-duty structural, high-load, and long-span applications, with tight wall-thickness tolerance, consistent roundness, and smooth internal bore. Equal stiffness in all transverse directions simplifies structural analysis and enables connection detailing on any face of the circular section.
Key Features:- Grade YST 310 steel: minimum yield strength 310 MPa, tensile strength 450 MPa
- Circular hollow profile 219.1 mm OD × 5.6 mm wall — equal stiffness and bending resistance in all directions
- Uniform wall thickness of 5.6 mm maintained throughout the full 6 m length
- Cold-formed ERW manufacturing ensuring high-integrity, flush weld seam quality
- Conforms to IS 1161:2014 — IS-marked with full batch mill certification
- High strength-to-weight ratio enabling slender, efficient structural and architectural sections
- Excellent weldability — compatible with MIG, TIG, SMAW, and orbital welding processes
- Nominal bore 200 NB: compatible with standard flanges, couplings, and saddle connections
- Square-cut ends for precise measurement and clean joint preparation on site
- Smooth mill-finish external surface suitable for painting, galvanising, or powder coating
- Structural columns, posts, and compression struts in industrial and commercial buildings
- Pre-Engineered Building (PEB) columns, bracing members, and diagonal struts
- Circular truss chord members and web diagonals in roof and bridge trusses
- Handrails, balustrades, stair stringers, and safety guardrail systems
- Gate posts, fencing columns, bollards, and perimeter security structures
- Flagpoles, lighting columns, signage poles, and street furniture supports
- Scaffolding standards, shoring frames, and temporary support structures
Specifications
| Base | Detail |
|---|---|
| Diameter | 219.1 mm |
| Length | 6 m |
| Nominal Bore | 200 NB |
| Thickness | 5.6 mm |
Mechanical & Chemical Composition
Main Specifications
| Base | Detail |
|---|
Chemical Composition
| Base | Detail (%) |
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