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Stainless Steel Long Weld Neck Flange

>Stainless Steel Long Weld Neck Flange

Stainless Steel Long Weld Neck Flanges Manufacturer

Long Weld Neck Flanges – Manufacturer & Supplier in India


What is a Long Weld Neck Flange?

Stainless Steel Expander Flanges – Manufacturer & Supplier in India

A Long Weld Neck Flange (LWN Flange) is an extended version of a weld neck flange, designed for high-pressure and high-temperature applications. It features a longer tapered hub, which provides extra reinforcement to the pipeline, reducing stress concentration. These flanges are commonly used in boilers, heat exchangers, pressure vessels, and industrial piping systems.



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Key Features of Long Weld Neck Flanges

  • Extended Hub Design – Provides better strength and stress distribution.
  • Leak-Proof Connection – Ideal for high-pressure applications.
  • Available in Multiple Materials – Stainless Steel, Carbon Steel, and Alloy Steel.
  • Customizable Lengths – Suitable for industry-specific needs.
  • High-Temperature Resistance – Used in extreme environments.

Types of Long Weld Neck Flanges

Long weld neck flanges are available in various types based on industry requirements:

  • Standard Long Weld Neck Flange – Used in general high-pressure and high-temperature applications.
  • Heavy Barrel Long Weld Neck Flange – Designed for high-stress environments with extra reinforcement.
  • Equal Barrel Long Weld Neck Flange – Has a uniform thickness throughout for consistent strength.
  • Custom Length Long Weld Neck Flange – Available in custom lengths for specific industrial needs.

Stainless Steel Long Weld Neck Flanges Manufacturer in India

We are a leading Long Weld Neck Flange manufacturer in India, offering:

  • Flanges manufactured to ASTM, ASME, ANSI, DIN, and EN standards.
  • Size range from ½” to 48” (DN15 to DN1200).
  • Available in multiple pressure ratings from Class 150 to Class 2500.
  • Worldwide shipping with competitive pricing.

Specifications of Long Weld Neck Flanges

SpecificationDetails
Material GradeStainless Steel, Carbon Steel, Alloy Steel
StandardASTM A182 / ASME SA182
Size Range½” to 48” (DN15 to DN1200)
Pressure Ratings150#, 300#, 600#, 900#, 1500#, 2500#
Face TypeRF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Connection TypeWelded
ApplicationHigh-pressure and high-temperature piping systems

Chemical Composition of Stainless Steel Long Weld Neck Flanges

ElementComposition (%)
Carbon (C)0.03 max
Manganese (Mn)2.00 max
Phosphorus (P)0.045 max
Sulfur (S)0.030 max
Silicon (Si)1.00 max
Chromium (Cr)16.0 – 18.0
Nickel (Ni)10.0 – 14.0
Molybdenum (Mo)2.00 – 3.00

Mechanical Properties of Stainless Steel Long Weld Neck Flanges

PropertyValue
Tensile Strength485 MPa (min)
Yield Strength170 MPa (min)
Elongation40% (min)
Hardness (Brinell)217 max
Hardness (Rockwell B)95 max

Common Applications of Long Weld Neck Flanges

  • Oil & Gas Pipelines – Used in high-pressure pipelines.
  • Boilers & Heat Exchangers – Provides stability under extreme temperatures.
  • Petrochemical Plants – Suitable for aggressive chemical environments.
  • Power Generation – Used in turbines and pressure vessels.
  • Marine & Offshore Industries – Ensures durability in harsh conditions.

Countries & Indian States We Supply Long Weld Neck Flanges To Global Export Destinations

RegionCountries
Middle EastUAE, Saudi Arabia, Qatar, Oman, Kuwait, Bahrain
AsiaJapan, South Korea, Singapore, Malaysia, Thailand, Vietnam
North AmericaUSA, Canada, Mexico
EuropeGermany, UK, France, Italy, Spain, Russia
South AmericaBrazil, Argentina, Chile, Colombia, Peru
AfricaSouth Africa, Egypt, Nigeria, Kenya, Algeria
Australia & OceaniaAustralia, New Zealand

Major Indian Cities & States for Long Weld Neck Flanges Supply

StateMajor Cities
MaharashtraMumbai, Pune, Nagpur, Nashik, Aurangabad
GujaratAhmedabad, Surat, Vadodara, Rajkot, Bhavnagar
Tamil NaduChennai, Coimbatore, Madurai, Tiruchirappalli
KarnatakaBengaluru, Mangalore, Mysuru, Hubli-Dharwad
Delhi NCRNew Delhi, Noida, Gurugram, Faridabad, Ghaziabad
West BengalKolkata, Howrah, Durgapur, Asansol, Siliguri
Uttar PradeshKanpur, Lucknow, Agra, Varanasi, Meerut
TelanganaHyderabad, Warangal, Karimnagar, Nizamabad
Andhra PradeshVisakhapatnam, Vijayawada, Guntur, Tirupati
RajasthanJaipur, Jodhpur, Udaipur, Kota, Ajmer

Buy High-Quality Long Weld Neck Flanges in India

Looking for premium Stainless Steel Long Weld Neck Flanges? Contact us today for competitive prices, bulk orders, and customized solutions!

Frequently Asked Questions - Stainless Steel 316 Flanges

1. What is the purpose of a Long Weld Neck Flange?
A Long Weld Neck Flange provides a strong, leak-proof connection in high-pressure and high-temperature applications, ensuring stability and reduced stress.
+ 2. What are the benefits of using a Long Weld Neck Flange?
Enhances pipeline strength Reduces stress concentration Suitable for high-pressure applications Offers better durability in extreme conditions
+ 3. Which industries use Long Weld Neck Flanges?
Long weld neck flanges are widely used in oil & gas, petrochemical, power generation, marine, and offshore industries.
+ 4. What materials are used for manufacturing Long Weld Neck Flanges?
These flanges are available in Stainless Steel, Carbon Steel, and Alloy Steel, depending on the application’s requirements.
+ 5. How do I select the right Long Weld Neck Flange?
Consider pipe size, pressure rating, material grade, and application before choosing a long weld neck flange.
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