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Carbon Steel Long Weld Neck Flanges Manufacturer and Supplier in Houston, USA

Shawn Flanges stands out as a top manufacturer and supplier based in Houston, USA, specializing in high-quality Carbon Steel Long Weld Neck Flanges. These flanges are crafted for strength, durability, and reliable performance, especially in demanding piping systems. With their extended neck design, they promote smooth flow, reduce turbulence, and lessen stress at the flange-to-pipe connection, making them perfect for high-pressure and high-temperature applications. Made from premium-grade carbon steel and utilizing advanced production techniques, these flanges boast excellent mechanical properties, precise dimensions, and a long service life. Industries like oil & gas, petrochemical, power generation, shipbuilding, and chemical processing trust Shawn Flanges for their dependable solutions.

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Carbon Steel LWN Flanges

Carbon Steel Long Weld Neck Flanges

Carbon Steel Long Welding Neck Flanges

The Carbon Steel Long Weld Neck Flanges are constructed from high-quality carbon steel, which includes controlled amounts of carbon, manganese, and trace alloying elements to boost mechanical strength, hardness, and durability. They deliver impressive tensile and yield strength, along with good elongation, toughness, and fatigue resistance, making them suitable for critical piping systems. The extended neck design ensures that stress is distributed gradually from the flange to the pipe, minimizing the risk of failure and ensuring long-lasting, leak-proof performance even under extreme pressure and temperature conditions.

Table of Contents

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Carbon Steel Long Weld Neck Flanges Specification

SpecificationASTM A694 / ASME SA694
Size Chart1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
StandardsANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Pressure Rating ANSIClass 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
UNI6Bar 10Bar 16Bar 25Bar 40Bar
EN6Bar 10Bar 16Bar 25Bar 40Bar
CoatingOil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Test CertificatesEN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production TechniqueForged, Heat treated and machined
Connect Type/ Flange Face TypeRaised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2″) to 200 NB (8″)
Equal and Reducing Configurations

TestDirect-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
EquipmentPress machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Manufacturer of

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

B.S: BS4504 , BS3293, BS1560, BS10
AS 2129: Table D; Table E; Table H
ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
American standard (ANSI)
German (DIN)
British standard (BS)

DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638 ASTM A694 F316 Carbon Steel Flanges
The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276

GradesCarbon Steel A105, LF2, IS2062, A36, F42, F52, F56, F60, F65, F70, F80
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

Largest Carbon Steel Long Weld Neck Flanges Supplier in Houston, USA

Shawn Flanges, a premier supplier in Houston, USA, specializes in high-quality Carbon Steel Long Weld Neck Flanges, valued for their exceptional durability, corrosion resistance, precise engineering, and suitability across diverse industrial applications. 

Contact us to get a quick quote for your requirement.

We offer These Flanges as per DIN, ISO, JIS or ANSI Standard.

These flanges are widely utilized in industries that require reliable connections for high-pressure, high-temperature, and critical fluid transport systems. You’ll find them in oil refineries, chemical plants, offshore platforms, power plants, and shipbuilding projects. Their design facilitates the smooth flow of liquids, gases, and steam while providing secure and durable connections that reduce maintenance needs. With their excellent strength, corrosion resistance, and longevity, Carbon Steel Long Weld Neck Flanges are the go-to choice for safe, efficient, and cost-effective piping operations.

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Types of Carbon Steel Long Weld Neck Flanges

Carbon Steel Raised Faced Long Weld Neck Flanges
ANSI B16.5 CS Class 150 Long Weld Neck Flanges
Carbon Steel Raised Faced Long Weld Neck Flanges
Carbon Steel 10K Long Weld Neck Flanges
Carbon Steel Flat Faced Long Weld Neck Flanges
Carbon Steel Long Welding Neck Pipe Flanges

Pressure Rating of Carbon Steel Long Weld Neck Flanges

ASME/ANSI B 16.5 Long Weld Neck Flange
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
ASME/ANSI B 16.47 Long Weld Neck Flange [Series A & B],Welding Neck Flange
PRESSURE CLASS 75, 150, 300, 400, 600, 900
ASME/ANSI B 16.36 Long Weld Neck Flange
PRESSURE CLASS 300, 400, 600, 900, 1500, 2500
PRESSURE CLASS PN 2.5 TO PN 40
BS 4504[PART 1] Hubbed Slip-On
PRESSURE CLASS PN 2.5 TO PN 400
BS 1560 BOSS Hubbed Slip-On Hubbed Threaded
PRESSURE CLASS 150, 300, 400, 600, 900, 1500, 2500
BS10 Plate Slip-On Flange, Slip-On Boss Flange
TABLE D, E, F, H
DIN FLANGES DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673
PRESSURE CLASS PN 6 TO PN 100

Are Custom Sizes Available for Carbon Steel Long Weld Neck Flanges?

Yes, we offer custom sizes for Carbon Steel Long Weld Neck Flanges to meet specific project needs. Our team at Shawn Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@shawnflanges.us.

Material Testing

We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.

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Application Industry of Carbon Steel Long Weld Neck Flanges

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