ISO 9001 · PED 2014/68/EU Certified

Precision
Ring
Forging &
Machining

Specialized manufacturer of seamless rolled rings, valve trim parts, hardfacing overlay welding, and precision CNC machined components. Serving Oil & Gas, Power, Railways and more from Coimbatore, India.

2020
Established
28
Skilled Employees
7K
Sq.ft Facility
15+
Global Customers
Hot Ring Forging — Charvi Ring Products
550mm Max Ring OD
1300°C Forging Temp
Certifications
TÜV
ISO 9001 — TÜV SÜD
PED
PED 2014/68/EU
AWS
AWS Certified
ASNT
ASNT Certified
About Charvi

Engineering Excellence
Since 2020

Charvi Ring Products is a partnership business established in 2020, based in Coimbatore — India's precision engineering hub. We operate a 7,000 sq.ft manufacturing facility staffed by 28 skilled professionals with deep expertise in mechanical, metallurgical and design engineering.

Our state-of-the-art forging lines with induction heating cater to non-ferrous alloys (Al, Br & Cu) as well as special alloys including Monel, Inconel, Nitronic-50 & 60, with ring rolling lines ranging up to 550mm diameter.

We partner with customers to deliver high-quality products with very low defect rates, quick turnaround, and full traceability from raw material to final despatch.

28
Employees
Skilled professionals
37+
Machines
CNC & forging
100%
Traceability
Heat-to-despatch
4
Certifications
ISO · PED · AWS · ASNT
Established
2020
Business Type
Partnership
Facility Area
7,000 sq.ft
Crane Capacity
2 Ton SWL + 1 Ton Movable
Max Ring OD
550 mm
Press Capacity
300 Ton + 150 Ton
Induction Heating
129 kW
Furnace Capacity
1300°C / 150 kg · 800°C / 650 kg
Location
Coimbatore — 641 021, Tamil Nadu
QA
Quality Motto @ CHARVI Close Tolerance · Consistent High-Quality · Cost-Effective Rings at Shorter Lead Time
Key Products

What We Manufacture

Seat Ring

Precision machined seat rings with hardfacing overlay welding using Stellite and Colmonoy alloys. Resistant to wear, galling, and corrosion at high temperatures.

Plug

High-performance valve plugs machined to close tolerances. Available with hardface overlay for extended wear life in oil & gas and power sector applications.

Stem

Precision turned valve stems in stainless steel and special alloys including 17-4PH, Inconel, and Monel grades. Ground and polished to specification.

Cage

Valve cages with precise port geometry, tight dimensional tolerances, and required surface finish. Manufactured for globe, control, and pressure relief valves.

Wear Ring

Rolled and machined wear rings for pumps and valves, with optional Stellite or Colmonoy hardfacing. Supplied with full material traceability documentation.

Ring Gear

Gear blanks and ring gears for transmission components, manufactured via ring rolling for superior circumferential grain flow and isotropic mechanical properties.

Air Volume Tank

Weld fabricated pressure vessels with 100% radiographic testing. Root welding GTAW & filling passes SMAW. Full hydrostatic leak and pressure testing included.

Valve Body + Expander S/A

Complex weld fabricated valve bodies and expander sub-assemblies with PWHT. Full NDE testing and inspection coordination available.

Steam Jacket

Steam jacketed valve bodies fabricated with precision fit-up and full penetration welds. Designed for process temperature maintenance in demanding environments.

De-superheater

Precision weld fabricated de-superheaters for steam temperature control. Manufactured to customer drawings with full dimensional and pressure testing inspection.

Turbine Bypass Valve

High-integrity weld fabricated turbine bypass valve bodies, manufactured with qualified WPS & PQR procedures, full RT inspection, and PWHT as required.

Extended Bonnet

Extended bonnets for cryogenic and high-temperature valve applications. Fabricated with precision machined flanges and full weld qualification documentation.

Wear Rings

Precision machined wear rings with optional Balinit C or nitrided surface treatment. Supplied with close dimensional tolerances for minimal pump leakage paths.

Impeller Nut / Throat Bush

Precision turned impeller nuts and throat bushes in stainless steel and special alloys. Manufactured to OEM specifications with full material certification.

Pump Shaft

Ground and polished pump shafts in various stainless grades and special alloys. CNC turned to close tolerances with full dimensional inspection reports.

Ring Gear

Transmission ring gears with tight dimensional tolerances. Manufactured via seamless ring rolling for superior circumferential grain flow and mechanical properties.

Gear Blanks

Forged and rough-machined gear blanks for automotive and industrial transmission components. Available in a range of steel grades with full material traceability.

Bearing Rings

Precision forged and machined bearing rings in Cr-steel grades. Manufactured with strict roundness and surface finish requirements for reliable bearing performance.

Manufacturing Capabilities

Full-Spectrum Manufacturing

550
mm max OD
Ring Rolling
300
Ton
Press Capacity
1300
°C
Furnace Temp
37
machines
Equipment

Seamless Ring Rolling

Versatile ring forming up to OD 550mm. Circumferential grain flow delivers isotropic mechanical properties. Suitable for all alloy grades including special alloys.

Hardfacing Overlay Welding

Cobalt-base (Stellite 1,6,12,21) and nickel-base (Colmonoy 5 & 6) overlay welding. PTAW, TIG, GMAW processes. Qualified on 15+ base material combinations.

CNC Machining

5 CNC turning lathes (up to ⌀550 × 1000mm), 2 VMC centres, manual lathes. Mori Seiki, BFW, Jyoti, LMW machines. Close tolerances with full inspection.

Weld Fabrication

Qualified WPS & PQR procedures for GTAW, SMAW, GMAW, PTAW processes. LORCH, ESAB, Panasonic welding systems. Full NDE and PWHT coordination.

Heat Treatment

In-house solution annealing, normalising, and tempering. 129kW induction heating system for ring forging preheats. PWHT via approved OSP facilities.

Quality & Inspection

Material PMI, hardness testing, dimension & roundness inspection. DPT, UT, RT coordination. Full production & material traceability from heat to despatch (ERP).

Industries Served

Trusted Across Industries

Oil & Gas
Power Sector
Railways
Wind Mill
Earth Moving
Textile & Electrical
Our Customers

Trusted by Industry Leaders

Flowserve· KSB· Baker Hughes GE· Cameron — Schlumberger· AMPO· HYDAC· SchuFit Fetterolf· Celeros Flow Technology· Makino· Truserve· Peekay Steel· Malnad Alloy Castings· Astrotech Equipments· Lakshmi LRT· Anugraha Valve Castings· Flow Link Systems· Sri Ranganathar Industries· Flowserve· KSB· Baker Hughes GE· Cameron — Schlumberger· AMPO· HYDAC· SchuFit Fetterolf· Celeros Flow Technology· Makino· Truserve· Peekay Steel· Malnad Alloy Castings· Astrotech Equipments· Lakshmi LRT· Anugraha Valve Castings· Flow Link Systems· Sri Ranganathar Industries·
Get in Touch

Request a Quote

Address
SF No.593/6A, Eachanari-Chettipalayam Road,
Eachanari Post, Coimbatore — 641 021
Tamil Nadu, INDIA
Email
info@charviringproducts.com
R. Chandiran
ME — Partner
+91 88613 86989
N. Vivek
ME — Partner
+91 95972 99229