NAVDURGAISPAT PVT. LTD.
NAVDURGA
ISPAT PVT. LTD.
Enquire Now

Quality Assurance

Rigorous metallurgical testing, BIS IS:2062 benchmarks, and 100% Mill Test Certificate guarantee.

BIS Certified Quality: Zero Defect Philosophy

At Nav Durga Ispat, quality is not merely an inspection phase—it is engineered into every stage of the hot rolling process. All our structural steel sections (Beams & Joists up to 200 mm, Channels up to 200 mm, and Equal Angles up to 130 mm) strictly conform to Bureau of Indian Standards (BIS) IS:2062:2011 (Grade E250 / E350) and the rigorous dimensional parameters of IS:808.

From incoming raw billet verification through high-torque continuous rolling stands to precision sawing and cooling beds, our metallurgical engineering team ensures complete structural reliability, dimensional fidelity, and defect-free finishes.

Every single dispatch consignment is accompanied by an authentic, verifiable Mill Test Certificate (MTC) detailing chemical heat composition and mechanical tensile properties, providing infrastructure developers and structural consultants absolute assurance.

Quality Benchmarks
IS:2062
BIS Structural Steel License
Grade E250 (Fe410W) / Grade E350
IS:808
Standard Section Dimensions
Strict web, flange & leg tolerances
ISO 9001
Quality Management System
ISO 9001:2015 certified rolling plant
100% MTC
Mill Test Certificate Guarantee
Supplied with every dispatch shipment
Tested in NABL calibrated laboratory environment

Comprehensive Metallurgical Testing Protocols

Chemical Heat Analysis

Our computer-interfaced Optical Emission Spectrometer (OES) inspects samples from every furnace heat prior to rolling to verify optimal elemental proportions and prevent structural vulnerabilities:

  • Carbon (C): Max 0.23% (Optimized for outstanding weldability without cracking)
  • Manganese (Mn): 1.50% max (Delivers enhanced ductile tensile resilience)
  • Silicon (Si): 0.40% max (Ensures comprehensive deoxidation and fine grain texture)
  • Sulphur & Phosphorus (S & P): Max 0.045% each (Prevents hot shortness & cold brittleness)
  • Carbon Equivalent (CE): Strictly ≤ 0.42% (Allows fabrication without costly pre-heating)
Equipment: Direct Spark Optical Emission Spectrometer (OES)
Mechanical Physical Testing

Test specimens extracted longitudinally from finished structural sections undergo comprehensive physical stress and yield testing on calibrated Universal Testing Machines (UTM):

  • Yield Strength (YS): Minimum 250 MPa (Grade E250) / 350 MPa (Grade E350)
  • Ultimate Tensile (UTS): 410 - 540 MPa (Reliable seismic and dynamic performance)
  • Elongation (%): Min 23% on gauge length 5.65√So (Superior ductility & formability)
  • 180° Cold Bend: Full 180-degree bend around specified mandrel with zero surface cracks
  • Impact Toughness: Evaluated for high-stress civil infrastructure and bridge work
Equipment: Calibrated 100 MT Computerized Universal Testing Machine
WORKS & OFFICE
NAVDURGA<br>ISPAT PVT. LTD.
Works Location
Site Plot No. 435 A, Sec. C, Urla Industrial Area, Raipur - 493 221 (Chhattisgarh)
Direct Lines
0771 - 4217 311 / 322 / 333 / 300
Business Enquiry Cell
Official Email
Get Quotation
Urla Rolling Mill Facility
Raipur Works
Rolling Mill Facility
Rolling Stand Floor