Building Infrastructure that moves nations
01 — Cal Group
End-to-End Manufacturing Built Around Your Requirement
Pattern to finished part
02 — PRODUCTS
Built for the track
/01 — CASTING
CMS Crossings
Cast manganese steel crossings — acute, obtuse, weldable and diamond (with and without slips) — 52 kg and 60 kg, 1 in 4.25 to 1 in 20, including R260 grade for 25 T axle loads.
/02 — RAIL
Switches & Rail Systems
/03 — SLEEPER
PSC Sleepers
Monoblock concrete main-line sleepers and special PSC sleepers for 1 in 8.5 and 1 in 12 turnouts, conforming to RDSO drawings.
40+ RDSO / DFCCIL-approved drawings across crossings, switches, joints, turnouts and sleepers.
WORKS — BIGHATI, WEST BENGAL
- CMS crossings — acute, obtuse, diamond & weldable, 52/60 kg, 1 in 4.25 to 1 in 20 (Drg. T-4220 to T-10072)
- Over-riding & thick web switches, 52/60 kg, 1 in 8.5 to 1 in 16 (Drg. T-4219 to T-10071)
- Glued insulated rail joints & improved/thick-web SEJs (Drg. T-2572 to T-8822)
- Canted turnouts, R555 60 kg, 1 in 12 & 1 in 20, to DFCCIL drawings
WORKS — SURLA ROAD, ODISHA
- Monoblock concrete sleepers — main line
- Special PSC sleepers for 1 in 8.5 turnouts (RDSO Drg. T-4865)
- Special PSC sleepers for 1 in 12 turnouts (RDSO Drg. T-4218)
02 — Industries and Applications
Advance Capability for Demanding Sectors
Railways
Engineering and manufacturing solutions developed around customer-specific speed, load and wear requirements—from high-speed passenger projects such as Vande Bharat to heavy-haul freight corridors.
Renewable Energy
Engineering and manufacturing solutions developed for high strength-to-weight performance, fatigue resistance and precision-machined interfaces across components exposed to continuous cyclic loading.
Aerospace & Defence
Precision-engineered solutions developed for applications where minimum weight, maximum strength, tight tolerances and complete material traceability are critical to performance and qualification.
Automotive
Fully CNC-machined castings developed for repeatable dimensional accuracy, reduced component weight and precise mating between interconnected parts across high-volume production.
Mining & Construction
Heavy-duty solutions developed around impact, load and abrasion requirements—optimising material composition, heat treatment and machining for longer wear life in severe operating conditions.
03 — Our Scale
Proven Experience.
Built at Scale.
04 — Our Products
Products That Move Nations
Turnouts
Integrated turnout solutions engineered for dependable track movement, dimensional accuracy and project-specific railway requirements.
Wagon components
Bogie, coupler and related wagon components manufactured with controlled processes, consistency and dependable in-service performance.
Crossings
Precision-engineered crossing components manufactured for controlled wheel transfer, demanding track conditions and reliable in-service performance.
Sleeper
Railway sleeper solutions manufactured to support stable track geometry, consistent load distribution and long-term infrastructure requirements.
Joints and switches
Rail joints, glued insulated rail joints and switch components engineered for reliable track connections, electrical separation and controlled movement.
05 — Infrastructure
A Foundry Developed With UK Specialists
Electric Arc Furnace
Large-scale melting capacity with controlled alloy and process management.
In-House Pattern Shop
Integrated pattern and tooling development supports faster revisions, shorter lead times and improved manufacturability.
Alpha Set No-Bake Moulding
Repeatable mould preparation for dimensional accuracy, surface finish and large casting requirements.
Heat Treatment
Controlled normalising, tempering and related processes for the required strength and stability.
Precision Machining
CNC and VMC capability for large, heavy and precision-engineered components.
Fabrication and Welding
Integrated fabrication and welding capability for complete, application-ready solutions.
06 — Product Design and Engineering
Designed With Purpose
/ 01
2D/3D Drafting & Simulation
Detailed drafting, component and assembly modelling, and casting-flow simulation help identify risks before production.
/ 02
Casting Methodology
Gating, risering, material behaviour and process parameters are developed and refined for consistent casting outcomes.
/ 03
Patterns & Prototyping
In-house pattern and tooling development supports faster iteration, while prototypes and stage-wise testing validate the route to production.
/ 04
Tooling & Fixtures
Custom tooling and fixtures improve machining stability, reduce cycle times and deliver greater dimensional consistency with a superior surface finish.
07 — Quality Assurance
Quality Is Built In, Not Added at the End
ISO 9001
ISO 14001
ISO 45001
Class A Foundry
NABL Lab
OSHA & EHS
Material & Supplier Assurance
Approved suppliers, verified material certificates and controlled incoming inspection ensure every raw material meets defined chemical, mechanical and application-specific requirements before it enters production.
Stage Wise Testing & Validation
Inspection and testing are carried out at defined production stages—from material verification and casting through machining, heat treatment and final inspection—helping identify deviations early and maintain process consistency.
Independent Audits & Quality Checks
Internal reviews, third-party inspections and customer-specific quality checks provide an additional layer of verification, ensuring processes, documentation and finished components comply with applicable standards and approval requirements.
Full Traceability
Unique identification links the finished casting to its raw-material lot, supplier, heat number, chemical composition, production records, radiography and testing history—supporting accurate investigation and corrective action.
08 — Responsible Manufacturing
Built for sustainable future
Resource Efficiency
In-house sand reclamation enables moulding-sand reuse, helping reduce virgin material consumption and manufacturing waste.
Energy Management
Power-factor and consumption monitoring support ongoing improvements in plant-wide energy efficiency.
Water Conservation
Closed-loop cooling and water recirculation help minimise freshwater consumption across manufacturing operations.
Air Management
Fume extraction and pollution-control systems support controlled emissions and environmental compliance during manufacturing.
Green Campus
Plantation and maintained green spaces contribute to a more responsible manufacturing environment.
10 — News and Insights
Practical Insight From the Factory Floor
Developing Foundry Processes With Globally Informed Practices
A practical look at how specialist input, process discipline and continuous improvement shape repeatable casting outcomes.
From Product Geometry to a Production-Ready Casting
How material selection, wall thickness, simulation, tooling and process planning work together before a component enters production.
Traceability: Following Every Casting Through Production
Why connecting raw materials, heat numbers, testing and inspection records supports stronger quality control and faster problem resolution.