Carbon Steel Flanges Manufacturer in India

Carbon steel flanges are essential components in industrial piping systems, providing secure, leak-proof connections in high-pressure and high-temperature environments. As a trusted Carbon Steel Flanges Manufacturer in India, CEBEX STEEL INDIA delivers precision-engineered flanges manufactured in compliance with international standards for critical applications across oil & gas, petrochemical, power generation, and infrastructure sectors.

Our carbon steel flanges are forged using high-quality raw materials and processed through advanced machining techniques to ensure superior strength, durability, and dimensional accuracy. Designed to withstand extreme operating conditions, these flanges provide reliable performance in both standard and specialized industrial environments.

Carbon Steel Flanges Manufacturer in India – ASTM A105 A350 LF2 A694 Flanges by CEBEX STEEL INDIA

Why Choose Us as Your Carbon Steel Flange Supplier?

Choosing the right manufacturer directly impacts operational safety and long-term performance. CEBEX STEEL INDIA is recognized for ISO 9001:2015 certified manufacturing processes, PED-approved products for international projects, and strict compliance with ASTM, ASME, EN, DIN standards.

We offer advanced in-house testing and inspection facilities with full material traceability and documentation. Our strong export presence spans Africa, Middle East, and Europe. Each flange is supplied with complete documentation including EN 10204 3.1 / 3.2 Mill Test Certificates.

Product Overview & Technical Specifications

Our carbon steel flanges are manufactured using high-quality raw materials with every stage of production closely monitored for quality assurance.

Feature	Specification / Detail
Material Standards	ASTM A105, ASTM A350, ASTM A694
Flange Standards	ASME B16.5, ASME B16.47, EN 1092-1, DIN
Grades	A105, A350 LF2, A694 F42/F52/F60/F65/F70
Size Range	½" NB to 48" NB (DN15–DN1200)
Pressure Ratings	Class 150, 300, 600, 900, 1500, 2500
Manufacturing Type	Forged / Heat Treated / Machined
Flange Types	Weld Neck, Slip-On, Blind, Socket Weld, Threaded, Lap Joint
Surface Finish	Anti-rust coating, oil coated, machined finish
Documentation	MTC 3.1/3.2, Inspection Reports

Equivalent Grades of Carbon Steel Flanges

Carbon steel flange grades are recognized across international standards with equivalent designations.

ASTM / ASME	EN / DIN	WNR No.	Description
ASTM A105	C22.8	1.0460	Standard carbon steel forging
ASTM A350 LF2	P265GH	1.0425	Low-temperature carbon steel
ASTM A694 F52	E355	—	High-strength pipeline grade

Types of Carbon Steel Flanges We Manufacture

We manufacture a full range of carbon steel flanges engineered for various industrial applications. Weld neck flanges are widely used in high-pressure systems due to their structural strength and fatigue resistance. Slip-on flanges offer ease of installation and cost efficiency, while blind flanges are used for closing pipeline ends. Socket weld and threaded flanges are ideal for small diameter piping systems.

Our product range also includes lap joint flanges, orifice flanges, spectacle blind flanges, and custom-designed flanges manufactured according to client drawings and project specifications.

Grades, Materials & Applications

All materials are sourced from approved mills and fully traceable.

Grade	Description	Applications	Standard
ASTM A105	General-purpose carbon steel	Oil & gas pipelines, refineries	ASTM A105
ASTM A350 LF2	Low-temperature carbon steel	Cryogenic applications	ASTM A350
ASTM A694 F52/F60/F65/F70	High-yield strength steel	Offshore pipelines, high-pressure systems	ASTM A694

Chemical Composition

Carbon steel flanges are supplied with controlled chemical compositions for consistent performance across all grades.

ASTM A105

Element	Composition (%)
Carbon (C)	0.35 max
Manganese (Mn)	0.60 – 1.05
Phosphorus (P)	0.035 max
Sulfur (S)	0.040 max
Silicon (Si)	0.10 – 0.35

ASTM A350 LF2

Element	Composition (%)
Carbon (C)	0.30 max
Manganese (Mn)	0.60 – 1.35
Phosphorus (P)	0.035 max
Sulfur (S)	0.040 max

Mechanical Properties

These flanges are designed to offer excellent load-bearing capacity and resistance to pressure and temperature variations.

Grade	Tensile Strength (MPa)	Yield Strength (MPa)	Elongation (%)
ASTM A105	≥ 485	≥ 250	≥ 22
ASTM A350 LF2	≥ 485	≥ 250	≥ 22
ASTM A694 F52	455–760	≥ 360	≥ 18

Dimensions, Sizes & Weight Chart

Manufactured according to ASME B16.5 / B16.47 standards. Custom sizes and machining available on request.

Size (NB)	OD (mm)	Thickness (mm)	Bolt Circle (mm)	Bolts
½"	89	11.2	60.3	4
1"	114	13.5	79.4	4
2"	152	17.5	120.7	8
4"	229	24.3	190.5	8
8"	343	30.2	298.5	8

Applications & Industries Served

Carbon steel flanges are widely used across industries and are particularly suitable for high-pressure and high-temperature applications.

Oil & Gas Exploration and Refining
Petrochemical Processing Plants
Power Generation Units
Water Treatment Facilities
Pipeline Infrastructure Projects
Construction & Heavy Engineering

Testing & Quality Assurance

Quality is ensured through PMI, Ultrasonic Testing (UT), Radiographic Testing (RT), Mechanical Testing (Tensile, Hardness), and Hydrostatic Testing.

All products are inspected and verified before dispatch with complete EN 10204 3.1/3.2 certification.

Packing, Delivery & Export Capabilities

We provide secure and export-ready packaging including wooden cases / pallets, anti-rust oil coating, proper tagging and marking, and complete export documentation.

We supply globally to Africa, Middle East, Europe, and Southeast Asia.

Exporting Carbon Steel Flanges to Africa

As a leading Carbon Steel Flanges Manufacturer in India, we have extensive experience supplying to African markets including Nigeria, Egypt, Kenya, South Africa, and Ethiopia. Our export team ensures compliance with regional standards, timely delivery, and seamless documentation for large-scale industrial and EPC projects. To learn more about our specialized solutions for the continent, visit our Africa Carbon Steel Flanges Exporter page.

Related Alloy Flanges – Stainless Steel, Duplex, Super Duplex, Inconel, Hastelloy, Monel, Titanium, Copper Nickel, Alloy Steel

In addition to Carbon Steel Flanges, we also manufacture and export Stainless Steel Flanges, Duplex Flanges, Super Duplex Flanges, Inconel Flanges, Hastelloy Flanges, and Monel Flanges. These high-performance alloy flanges are designed for critical applications requiring enhanced corrosion resistance, high strength, and reliability in extreme environments.

Our technical team ensures precise material selection and full compliance with international standards to meet your project requirements.

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Why Choose CEBEX STEEL INDIA?

We deliver consistent product quality, competitive pricing, and dependable global supply. Our engineering expertise ensures accurate material selection, compliance with international standards, and long-term performance reliability.

Frequently Asked Questions (FAQ)

What are carbon steel flanges used for?

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They are used in piping systems for oil & gas, power plants, and industrial infrastructure.

Which grades of carbon steel flanges do you supply?

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ASTM A105, A350 LF2, and A694 F52/F60/F65/F70.

Are these flanges suitable for low temperature service?

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Yes, A350 LF2 is specifically designed for low-temperature applications.

What standards do you follow?

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ASTM, ASME B16.5, B16.47, DIN, EN.

Do you provide test certificates?

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Yes, EN 10204 3.1 / 3.2 certificates are provided.

What is your delivery time?

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Typically 2–4 weeks depending on order size and customization.