Steel Products Primary Standard: ASME B16.5 Ready Yard Inventory

Industrial Flanges

Name: Industrial Flanges
Brand: Sarvottam Steel
Availability: InStock

A Comprehensive Overview of Industrial Flanges in Pipe Systems

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Governing Industry Standards

ASME B16.5 ASME B16.47 Series A & B ASTM A182 / ASME SA 182 ASTM A240 MSS-SP-44 DIN / EN 1092-1

Dimensional & Size Scope

1/2″ NB to 24″ NB (ASME B16.5) & 26″ to 60″ (ASME B16.47) | Pressure: 150#, 300#, 600#, 900#, 1500#, 2500# (PN6 to PN400)

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Technical Description & Overview

Industrial flanges are critical components in piping systems, serving as mechanical devices that enable the connection and disconnection of pipes, valves, pumps, and other equipment. They are designed to create secure joints that can withstand pressure and temperature variations common in industrial environments. Flanges come in various shapes and sizes, with multiple materials used depending on the specific application, including steel, stainless steel, plastic, and more. Understanding the function and types of flanges is essential for maintaining efficient and safe operations in various sectors like oil and gas, water treatment, and chemical processing.\n\nThere are several types of industrial flanges, each designed for specific applications and conditions. The most common types include slip-on, weld neck, blind, and threaded flanges. Slip-on flanges are easy to install and fit over the pipe, while weld neck flanges offer greater strength and are often used in high-pressure applications. Blind flanges are used to seal ends of piping systems, preventing flow, whereas threaded flanges are utilized in systems where welding is impractical. Each type has its own advantages and suitability based on the needs of the pipeline system, making selection a critical step in ensuring operational efficiency.

Engineering Specifications

Technical Parameter	Standard Value / Specification
Flange Material	Stainless Steel (e.g., 304, 304L, 316, 316L, 317, 321, 347, 904L, Duplex 2205)
Flange Types	Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Threaded (TH), Lap Joint (LJ), Spectacle Blind, Long Weld Neck
Corrosion Resistance	Excellent (enhanced pitting and crevice resistance compared to traditional steels)
Pressure Ratings	Varies (e.g., 150 psi, 300 psi, 600 psi, 900 psi, 1500 psi, 2500 psi / Class 150# to 2500#)
Strength and Toughness	Significantly higher yield and impact strength through closed-die precision forging
Surface Finish	Polished / Smooth Finish (63-125 AARH) & Standard Serrated Raised Face (125-250 AARH)
Governing Standards	ASME B16.5, ASME B16.47, ASTM A182, ASTM A240, MSS-SP-44, DIN EN 1092-1

Certified Chemical Spectrometry Limits

Chemical Element	Maximum / Standard Limit
Carbon (C)	0.08% max (F304) / 0.030% max (F304L/F316L)
Chromium (Cr)	18.0 - 20.0% (F304) / 16.0 - 18.0% (F316)
Nickel (Ni)	8.0 - 11.0% (F304) / 10.0 - 14.0% (F316)
Molybdenum (Mo)	2.0 - 3.0% (F316/F316L)
Manganese (Mn)	2.00% max
Silicon (Si)	1.00% max

Mechanical & Tensile Parameters

Mechanical Property	Guaranteed Requirement
Tensile Strength (UTS)	≥ 515 MPa (F304) / ≥ 485 MPa (F316L)
Yield Strength (0.2% Offset)	≥ 205 MPa (F304) / ≥ 170 MPa (F316L)
Elongation (% in 2")	≥ 30%
Hardness (Brinell HBW)	≤ 187 HBW

Available Material Grades

ASTM A182 F304 / F304L

Standard austenitic forged flange for general industrial process and building services piping.

ASTM A182 F316 / F316L

Molybdenum-stabilized forged flange providing heavy protection against chlorides and chemical acids.

ASTM A182 F317 / F321 / F347

High-temperature and acid-resistant forged flanges for refinery reforming and cracking units.

ASTM A182 F51 / F53 (Duplex)

High-strength duplex flange delivering double the yield strength of 316 with superior pitting resistance.

Key Engineering Features & Advantages

High-Quality Materials: Forged from solid vacuum-degassed billets per ASTM A182

Wide Range of Sizes and Types: Covers slip-on, weld neck, blind, socket weld, and threaded

Precision Engineering: CNC-machined raised faces with standard concentric serration (125-250 AARH)

Compliance with Industry Standards: 100% compliant with ASME B16.5, ASTM A182, and PED directives

Corrosion Resistance: Superior resistance to stress corrosion cracking and pitting in harsh fluid media

Target Industrial & Infrastructure Applications

Piping Systems in Oil and Gas (offshore production manifolds, refinery pipe racks)

Water Treatment Facilities (municipal pumping stations, desalination plants)

Chemical Processing Plants (reactor inlet nozzles, acid handling headers)

Power Generation (high-pressure steam headers, turbine bleed lines)

Food and Beverage Industry (sanitary process piping and filtration skids)

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