Precision-formed and IS-certified, the AST YST 310 Medium Duty 80 NB MS Round Pipe - (4 x 88 mm) - 6 mtr Length from AST PIPES is a Medium Duty ERW round pipe in YST 310 structural steel conforming to IS 1239:2004 (Mild Steel Tubes, Tubulars, and Other Wrought Steel Fittings). The 88 mm OD × 4 mm wall (80 NB) in 6 m lengths delivers the balanced wall thickness providing reliable performance under moderate pressure and structural loads demanded by heavy-duty structural, high-pressure, and critical engineering applications, with tight thickness tolerance, consistent roundness, and smooth internal bore for unrestricted fluid flow. With yield of 310 MPa and tensile of 450 MPa, this IS-marked pipe ensures safe and reliable performance in plumbing, structural, and mechanical service.

• Grade YST 310 steel: minimum yield strength 310 MPa, minimum tensile strength 450 MPa
• Medium Duty classification per IS 1239:2004: designed for medium-pressure fluid conveyance and standard structural applications
• Pipe dimensions: 88 mm OD × 4 mm wall (80 NB) — consistent throughout 6 m length
• Cold-formed ERW manufacturing ensuring high-integrity, flush weld seam quality throughout
• Conforms to IS 1239:2004 — IS-marked with full batch mill certification on every supply lot
• Smooth internal bore for efficient, low-friction fluid and gas conveyance under all conditions
• Excellent weldability — compatible with MIG, TIG, SMAW, and orbital welding processes
• Compatible with IS-standard threaded fittings, flanges, and couplings for 80 NB
• Square-cut ends for precise measurement and clean joint preparation on site
• Smooth mill-finish external surface suitable for painting, galvanising, or powder coating

• Water supply and distribution pipelines in residential, commercial, and industrial buildings
• Gas conveyance lines for domestic, commercial, and light industrial installations
• Structural columns, posts, and compression struts in construction and fabrication frameworks
• Fire-fighting water mains, wet riser systems, and automatic sprinkler pipework
• Agricultural irrigation networks, pump discharge lines, and water distribution mains
• Handrails, balustrades, safety guardrails, and pedestrian barrier systems
• Scaffolding standards, shoring props, and temporary support structures on site