Every component,
specified.
Materials, dimensions, applicable standards and applications for every product in the Rungta Industries railway catalogue.
- RDSO T-39
- IRS-CONC-SP-1989
- EN 13230
Pre-Stressed Concrete Sleepers
Mainline broad-gauge and metro pre-stressed concrete sleepers cast on long-line pre-tensioned beds against approved RDSO drawings. Cast with embedded SG cast-iron inserts so the fastening assembly anchors directly into the sleeper body — eliminating field drilling and giving the entire track-form a single, traceable lifecycle. Each pour is documented end to end: mix design, cube strength, geometry tolerance, insert pull-out load.
Specifications
- Gauge
- BG 1676 mm · MG 1000 mm · metro 1435 mm
- Concrete grade
- M60 (28-day characteristic strength)
- Pre-stressing wire
- Indented HTS wire, 16 strand
- Weight
- ~370 kg per sleeper
- Design life
- 50+ years under mainline axle loads
- Tolerance
- ±2 mm dimensional · ±1° insert angularity
Applications
- Mainline broad-gauge passenger and freight track
- Metro elevated viaducts and at-grade corridors
- Dedicated freight corridor heavy-haul track
- High-speed and trial-track applications
- RDSO T-1700
- IS 1865 (SG iron)
- IS 2107
Spheroidical Graphite Cast Iron Inserts
Spheroidal-graphite (ductile) cast-iron inserts produced in-house and embedded in PSC sleepers during casting. The SG matrix combines the tensile strength of steel with the cast-iron geometry tolerance, giving the elastic rail clip a stable seat against repeated insertion/removal cycles. Each batch is heat-treated and pull-out tested before despatch.
Specifications
- Material grade
- SG iron grade 500/7 (IS 1865)
- Tensile strength
- 500 N/mm² minimum
- Elongation
- 7% minimum
- Hardness
- 190–230 BHN
- Insert pull-out
- 85 kN minimum
- Annual capacity
- 15 million pieces
Applications
- Embedded fastening anchor in PSC sleepers
- Turnout-zone and crossing sleepers
- Metro and mainline track-form assemblies
- RDSO T-3701
- Pandrol PR-401-A
- EN 13481
Elastic Rail Clips
Pandrol-pattern elastic rail clips (ERCs) cold-formed and heat-treated from high-tensile spring-steel rod. Each clip is bend-set, shot-peened and oil-quenched for fatigue endurance under millions of axle passes. Stocked in geometries Mark III, J-2 and the heavy-haul Mark V profile to suit mainline, metro and freight corridor track-forms.
Specifications
- Material
- 55Si7 / 60Si7 spring steel
- Toe load
- 850–1100 kg per clip
- Deflection
- 12.5 mm under clip seating load
- Hardness (post-temper)
- 44–50 HRC
- Surface treatment
- Shot-peened + black oxide
- Annual capacity
- 10 million pieces
Applications
- Mainline broad-gauge passenger track
- Heavy-haul freight corridor track
- Metro elevated and underground track
- Replacement-cycle maintenance work
- RDSO WD-26
- RDSO G-69
- RDSO M&C/PCN-105
Modified Elastomeric Pads
Modified Elastomeric Pads (MEPs) for CASNUB freight bogies — bonded rubber-and-steel assemblies seated between the bogie side-frame pedestal and the axle adapter on the CTRB (Cartridge Tapered Roller Bearing). The MEP transmits vertical wheel loads, permits controlled lateral and longitudinal movement of the wheelset, and acts as the primary anti-vibration member of the bogie. By introducing compliant primary suspension it dramatically reduces lateral wheel-rail forces, minimises wheel-flange wear and eliminates adapter-crown wear over the wagon's service life.
Specifications
- Configuration
- Steel top plate + bonded rubber + steel bottom plate
- Rubber compound
- Natural rubber, anti-ozone & anti-ageing
- Hardness
- Shore A 65 ± 5
- Steel plates
- Mild steel · phosphated + lacquered finish
- Vertical static stiffness
- 70–90 kN/mm
- Longitudinal stiffness
- 8–12 kN/mm
- Lateral stiffness
- 10–15 kN/mm
- Bond test
- Rubber-failure mode at peel test
- Vulcanisation
- Hot-platen chemical bond, single cure
- Service life
- Matched to wagon overhaul cycle
Applications
- Primary suspension between bogie side-frame pedestal and axle adapter (CTRB)
- CASNUB-22NL and 22NLB bogies on freight wagons
- CASNUB-22HS and 22HS Mk-I / Mk-II high-speed bogies
- BCNHL, BOXNHL, BOXNHS and BLC fleet — heavy-haul freight service
- RDSO MM-30
- RCF specification
- EN 13913
Metal And Rubber Bonded Products For LHB Coaches
Chemically vulcanised metal-to-rubber bonded components used through LHB passenger coach bogies — buffer pads, anti-yaw dampers, primary suspension elements and side bearer pads. The bond strength is qualified by destructive peel-test on every production batch. We produce these from raw natural-rubber stock through finished, paint-coded, dispatch-ready assemblies.
Specifications
- Bond test (peel)
- Rubber failure mode (no metal release)
- Rubber compound
- Natural rubber 60–80 Shore A
- Metal substrate
- EN 8 / mild steel with phosphate primer
- Vulcanisation
- 180 °C platen press, 8–25 min cycle
- Fatigue test
- 2 million cycles at design amplitude
- Applicable coaches
- LHB AC / Sleeper / Pantry / Generator
Applications
- LHB primary suspension bonded springs
- LHB centre pivot side bearer pads
- LHB buffer beam bonded buffer assemblies
- Yaw and lateral damper bushings
- RDSO T-3702
- IRS T-39
- EN 13481-2
High Viscose Nylon Liners
Precision-moulded nylon-66 insulating liners that sit between the elastic rail clip and the rail foot. They electrically isolate the rail from the sleeper, set gauge between the two rails, and absorb micro-movement under load. Moulded under tight cavity tolerances so the gauge across a full sleeper bay is consistent within a sub-millimetre band.
Specifications
- Polymer
- Glass-reinforced nylon 66 (PA66 GF30)
- Tensile strength
- 150 MPa minimum
- Heat deflection (HDT)
- ≥ 230 °C
- Water absorption
- ≤ 2% (24 h immersion)
- Insulation
- Surface resistivity ≥ 10¹² Ω
- Service life
- 15+ years outdoor under mainline load
Applications
- Rail-foot insulator with elastic fastening systems
- Gauge-maintenance liner in switch and crossing zones
- Replacement-cycle maintenance kits