Combining structural strength with precise pipe geometry, the AST YST 240 Medium Duty 125 NB MS Round Pipe - (4.8 x 138.5 mm) - 6 mtr Length from AST PIPES is a Medium Duty ERW round pipe in YST 240 structural steel conforming to IS 1239:2004 (Mild Steel Tubes, Tubulars, and Other Wrought Steel Fittings). The 138.5 mm OD × 4.8 mm wall (125 NB) profile in 6 m lengths achieves an optimal balance of balanced wall thickness providing reliable performance under moderate pressure and structural loads, smooth bore, and certified mechanical performance for industrial plumbing, gas lines, structural columns, and medium-duty fabrication works. With minimum yield of 240 MPa and tensile of 360 MPa, this IS-marked pipe meets the demanding requirements of medium-duty structural, industrial, and mechanical piping with traceable, consistent quality.

• Certified YST 240 Medium Duty ERW pipe meeting all requirements of IS 1239:2004
• Precise 138.5 mm OD with 4.8 mm wall: consistent roundness and flush seam throughout 6 m
• Duty class MD: engineered for designed for medium-pressure fluid conveyance and standard structural applications
• Consistent ERW weld quality: clean, flush seam on both internal and external pipe surfaces
• Tensile strength 360 MPa for reliable performance under structural and hydraulic loads
• Standard 6 m cut lengths with square ends for accurate joint detailing and fit-up
• Suitable for water supply, gas distribution, structural columns, and general engineering use
• Weld-ready surface with minimal surface scale from prime coil inputs throughout
• Equal hoop strength in all directions: no orientation-specific design or detailing required
• Full quality documentation: heat number, grade, duty class, dimensions, and MTC available

• Heat exchanger shells, boiler feed lines, and steam distribution piping
• Hydraulic cylinder barrels, pneumatic actuator bodies, and precision bore tubes
• Sports facility structures: goal posts, floodlight poles, and grandstand frames
• Modular construction and prefabricated building structural tubular components
• Cold-storage and refrigerated warehouse structural frames and racking uprights
• Military and defence fabrication: shelters, antenna masts, and field structures
• General engineering fabrication: custom frames, supports, and structural inserts