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Carbon Steel Long Weld Neck Flanges Manufacturer and Supplier In Cape Town, South Africa

Ronwen Flanges is a reputable manufacturer and supplier of Carbon Steel Long Weld Neck Flanges, proudly based in Cape Town, South Africa. Known for their commitment to precision engineering and quality assurance, this company provides flanges that adhere to global standards across a variety of industries. Ronwen Flanges focuses on delivering durable and reliable solutions tailored for high-pressure and high-temperature environments. Their Carbon Steel Long Weld Neck Flanges are designed to ensure outstanding performance, strength, and safety. With a customer-centric approach and a wealth of technical expertise, Ronwen Flanges has established itself as a go-to partner for clients in search of trustworthy flange products, both in South Africa and beyond.

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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 from Ronwen Flanges are crafted from high-grade carbon steel materials like ASTM A105 and A350 LF2, which offer remarkable strength and durability. The typical composition includes carbon, manganese, phosphorus, sulfur, and trace elements, all engineered for toughness and wear resistance. These flanges boast impressive mechanical properties, such as high tensile strength, yield strength, and impact resistance, making them perfect for demanding applications. They are built to perform reliably in high-pressure systems and extreme temperature conditions, ensuring a secure and long-lasting connection in industrial piping systems.

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 Cape Town, South Africa

Ronwen Flanges, a premier supplier in Cape Town, South Africa, 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.

Ronwen Flanges’ Carbon Steel Long Weld Neck Flanges find extensive use in industries like oil & gas, petrochemical, power generation, water treatment, and shipbuilding. These flanges are particularly suited for high-pressure piping systems, especially in scenarios where constant bending stress is present, thanks to their extended neck design. They offer enhanced structural support and are commonly utilized in heat exchangers, pressure vessels, and critical pipeline connections. Their robust construction guarantees leak-proof performance, making them ideal for both aboveground and underground installations.

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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 Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.

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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