Who We Are

Ratnadeep Steel & Engg. Co. has been a part of Mumbai’s industrial landscape for years, manufacturing and supplying flanges and piping components to customers across India and overseas. Based in Mumbai with a manufacturing unit at Taloja MIDC, the company serves industries ranging from oil and gas to chemical processing and marine engineering.

We are a flanges manufacturer with a focus on quality, precision, and on-time delivery.

Our Certifications

We operate under three ISO certifications that validate our manufacturing processes:

• ISO 9001:2015 – Quality Management System
• ISO 14001:2015 – Environmental Management System
• ISO 45001:2018 – Occupational Health and Safety Management Systems

These certifications mean every flange we produce undergoes consistent quality checks, and our environmental and safety practices meet internationally recognized standards.

Materials We Work With

Stainless Steel Flanges

For chemical plants, food processing, and general industrial use where rust resistance matters.

Duplex & Super Duplex Steel Flanges

These offer a combination of strength and corrosion resistance. We recommend them for offshore platforms, marine environments, and desalination plants where chloride exposure is high.

Carbon Steel Flanges

A common choice for high-pressure lines in oil & gas, petrochemical, and power generation setups.

Alloy Steel Flanges

Built for extreme temperatures and demanding mechanical conditions.

Nickel Alloy Flanges

• Nickel 200/201 – Resists acids and corrosive media
• Inconel 600/625/718 – Handles high heat and oxidation
• Monel 400/K500 – Performs well in seawater and chemical environments
• Hastelloy C22/C276 – Withstands aggressive chemicals

Titanium Flanges

Grades 1, 2, 5, and 9 – lightweight, strong, and highly corrosion-resistant.

Copper Flanges

C10100, C10200, C10300, C11000 – used where electrical or thermal conductivity matters.

Brass Flanges

Bronze Flanges

Aluminium Flanges

Each offering specific advantages for weight, wear resistance, or corrosion performance.

Flange Types We Manufacture

Our range covers virtually every flange type your project might need:

• Slip On (SO) – Straightforward to install, works well in low-pressure systems
• Socket Weld (SW) – Strong connection for small-diameter, high-pressure lines
• Blind (BL) – Seals pipe ends and allows system access
• Weld Neck (WN) – The go-to choice for demanding high-pressure applications
• Long Weld Neck (LWN) – Connects to vessels and columns
• Lap Joint (LJ) – Useful when you need to dismantle pipes frequently
• Deck Flange – Common in marine and offshore settings
• Spectacle Blind – Provides positive isolation in piping
• Ring Joint (RTJ) – Handles high pressure and temperature
• Orifice – For flow measurement applications

Face Options: Raised Face (RF), Ring Type Joint (RTJ), and Flat Face (FF).

Our Product Standards

These standards mean our flanges fit piping systems across the world.

Where Our Flanges Are Used

• Oil & Gas – Pipelines, refineries, production facilities
• Petrochemical Plants – Process lines, reactors, heat exchangers
• Power Generation – Steam systems, cooling circuits, high-temperature loops
• Offshore & Marine – Platforms, subsea lines, ship construction
• Chemical Processing – Handling corrosive fluids and reactive media
• Water Treatment & Desalination – Seawater intake, treatment trains, distribution
• Construction & Infrastructure – Structural supports, piling, civil works
• Pharmaceutical & Nuclear – Hygienic systems and critical safety applications

Why Customers Choose Us

• ISO Certification Across Three Areas – Quality, environment, and occupational health. This isn’t paperwork; it reflects how we work.
• One-Stop Material Range – From basic carbon steel to exotic alloys like Hastelloy and Titanium, we stock and manufacture across the spectrum.
• Technical Support – Our team helps you pick the right grade and specification for your job.
• Global Reach – We supply customers in India and abroad, with delivery timelines we meet.
• Complete Piping Solutions – Beyond flanges, we supply pipes, tubes, fittings, fasteners, sheets, plates, and structural materials.