MS Round Bars & Jointless Pipes in Modern Structures

1. Applications and Performance Characteristics of MS Round Bars and MS Jointless Pipes in Structural Engineering This presentation is tailored for an Indian technical audience including structural engineers, fabrication consultants, procurement teams, and civil contractors. The content emphasizes engineering value, technical standards, and brand reliability including Kamdhenu, as required.

2. What is MS Round & MS Jointless Pipe? • MS Round: Mild Steel circular solid bars used for general fabrication, construction, and machining applications. • MS Jointless Pipe: Seamless pipe made from mild steel with no welded seam; also called MS seamless pipe or MS jointless tube. • Why mild steel?: Ductility, weldability, machinability, and cost-effectiveness.

3. Manufacturing Processes MS Round Bar: MS Jointless Pipe: • Produced via hot rolling from billets. • Sizes: 6 mm –100 mm dia. • Made by piercing solid billets and elongating them (Mannesmann process). • No welded seam ⇒superior pressure resistance.

4. Mechanical Properties Property MS Round MS Jointless Pipe Tensile Strength 410 – 550 MPa 350 – 500 MPa Yield Strength 250 – 320 MPa 210 – 300 MPa Elongation (%) 15 – 25% 15 – 30% Hardness (BHN) 125 – 180 100 – 160 Weldability Excellent Excellent

5. Where Are They Used? MS Round: • Gratings, base plates, engineering components • Frames, trusses, fencing posts MS Jointless Pipes: • Hydraulic systems, pressure vessels • Heat exchangers, boiler tubes • Pipelines carrying steam, gas, air under high pressure

6. Key Differences – Seamless vs Welded Pipe ERW Welded Pipe Feature MS Jointless Pipe Strength Higher (no seam) Moderate Pressure Handling 80–100 bar (typical) Up to 350 bar Leak Risk Minimal At weld zones Cost Higher Lower Smooth bore and finish Appearance Visible seam

7. Applicable Indian Standards IS 2062 (Fe 410/Fe 500 grades) IS 1730 (for rolled steel bars for structural use) MS Round: IS 1239 Part 1: Mild steel tubes for water, gas, air IS 1161: Steel tubes for structural purpose IS 6286: Seamless tubes for heat exchangers MS Jointless Pipes: Tolerance & Dimensional Control MS Round: Diameter tolerance: ±0.5 mm for < 25 mm Wall thickness tolerance: ±12.5% OD tolerance: ±0.75% Jointless Pipe: Camber, straightness and ovalityparameters as per IS norms

8. Comparison of Major Indian Brands Product Line Available Grades Brand IS Certified Key Strength • Kamdhenu provides hot-rolled MS rounds and seamless pipes with IS certification and reliable mechanical uniformity, ideal for structural and pressure applications. MS Rounds, Pipes IS 2062, 1239 Fe 410, Fe 500 Consistency, Pan- India Kamdhenu Structural Pipes IS 1161, YST 210 High dimensional control APL Apollo MS Seamless Pipes API 5L, IS 1239 Jindal Precision & finishing Cost-driven, quality varies Local Mills Mixed grades Fe 250–350 Inconsistent

9. Arc welding, MIG, TIG welding Drilling, threading, machining MS rounds & pipes allow: Welding & Fabrication Compatibility Kamdhenu MS rounds come with calibrated tolerance — easier to cut, bend, and fabricate with CNC machines

10. Common Site Concerns Issue Cause Resolution Pipe leak in jointless lines Improper coupling, not material Ensure standard fittings Ovality in MS rounds Poor rolling or handling Buy from certified suppliers Rusting during transit No surface treatment Use coated/lacquered MS Non-uniform thickness Local rerolling mills Prefer IS-stamped products

11. Coatings & Finishing Options Hot-dip Galvanized: For outdoor and corrosive environments Kamdhenu offers both raw and treated pipes for custom needs Black (Uncoated): For indoor or non-critical use Lacquered / Painted: Prevents rust during transit Use of Kamdhenu- certified material contributes to IGBC and GRIHA credits in green buildings Can be repurposed into structural frames, reprocessed into billets Sustainability & Recyclability MS products are 100% recyclable

12. MS Round: ₹46 –₹58/kg (based on grade & dia) Procurement & Cost Insights MS Jointless Pipe: ₹65 –₹100/kg (based on OD & wall) Kamdhenu distributors present across tier-1 and tier-2 cities with GST-compliant invoicing

13. Conclusion • MS Rounds & Jointless Pipes are core materials in infrastructure, fabrication, and pressure systems • Opting for IS-compliant brands like Kamdhenu ensures strength, dimensional accuracy, and long-term durability • Smart procurement = reduced failures & increased ROI

14. Thank You