Khawla Flanges is a trusted manufacturer and supplier based in Muscat, Oman, specializing in high-quality SS400 flanges for a wide range of industrial applications. With a commitment to precision engineering, reliable performance, and customer-focused service, the company provides durable flange solutions designed to meet demanding operational requirements. Khawla Flanges combines advanced manufacturing techniques with stringent quality control to ensure each product meets international standards. Serving industries such as construction, oil and gas, petrochemicals, and machinery, the company continues to build its reputation as a dependable source of robust and cost-effective SS400 flange products across Oman and the GCC region.
SS400 flanges are made from a low-carbon steel with a typical composition of 0.05-0.25% carbon, 0.3-0.6% silicon, and 0.6-1.2% manganese. These flanges offer excellent weldability, good strength, and medium toughness. Mechanical properties include a tensile strength of 400 MPa and yield strength of 245 MPa, with elongation of 20%. Advantages of SS400 flanges include cost-effectiveness, ease of fabrication, and versatility for various industrial applications such as construction and piping. They are highly resistant to corrosion, ensuring long-term reliability and performance in both indoor and outdoor environments.
Khawla Flanges, a leading supplier in Muscat, OMAN, offers an extensive selection of SS400 Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| Specifications | ASTM SS400 and ASME SS400 |
|---|---|
| ASME B16.5 Carbon Steel SS400 Flanges size range | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Carbon Steel SS400 Flanges Standards | ANSI/ASME B16.5, B16.48, BS4504, B16.47 Series A & B, EN-1092, BS 10, DIN, ASME Flanges, ANSI Flanges, DIN Flanges, BS Flanges, GOST Flanges,EN Flanges |
| Carbon Steel SS400 Flanges Standard DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| Carbon Steel SS400 Flanges Standard ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Carbon Steel SS400 Flanges Standard UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Carbon Steel SS400 Flanges Standard JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| Carbon Steel SS400 Flanges Standard EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Main Types | Forged / Threaded / Screwed / Plate |
| Flange supporting material | Gasket, Ring Joint, Flange Bolts |
| Carbon Steel SS400 Pipe Flanges Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production technique |
|
| Connect Type/ Flange Face Type | Ring Type Joint (RTJ), Raised Face (RF), Large Male-Female (LMF), Flat Face (FF), Lap-Joint Face (LJF), Male-Female (SMF), Small Tongue & Groove, Large Tongue & Groove |
| Most common types of Carbon Steel SS400 Flanges |
|
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations Carbon Steel SS400 Flanges Threaded Flanges, Socketweld Flanges, Slip-On Flanges, Blind Flanges, Weld Neck Flanges |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Equipment | Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc |
| Specialized manufacturer of |
|
|
Element |
Weight % |
|
Carbon |
0.08 – 0.15 |
|
Silicon |
0.15 – 0.50 |
|
Manganese |
0.30 – 0.60 |
|
Phosphorus |
0.025 max * |
|
Sulphur |
0.025 max * |
|
Molybdenum |
0.90 – 1.10 |
|
Chromium |
2.00 – 2.50 |
|
Nickel |
0.5 max |
Property | Values |
Ultimate Tensile Strength * | 95 min Ksi (655 Mpa) |
0.2 % Yield Strength * | 75 min Ksi (517 Mpa) |
Elongation * | 17 % min |
Reduction of Area * | 35 % min |
Charpy Impact Toughness | 42 mean/ 33 min J at –18o C |
Hardness | 197 – 237 BHN (75 Ksi min) |
SS400 flanges are made from a carbon steel grade containing mainly iron with controlled amounts of carbon, manganese, phosphorus, and sulfur to achieve balanced strength and workability. This material offers good weldability, moderate tensile strength, and reliable toughness suitable for general structural applications. SS400 typically has a tensile strength ranging from 400–510 MPa and yield strength around 245 MPa, making it suitable for pressure and load-bearing environments. Its combination of durability, machinability, and cost-effectiveness makes SS400 a widely used material for industrial flange manufacturing.
Yes, we offer custom sizes for SS400 Flanges to meet specific project needs. Our team at Khawla Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@khawlaflanges.com.
SS400 flanges are widely used across various industries due to their strength, versatility, and affordability. In construction, they support piping systems for water supply, drainage, and structural frameworks. In oil and gas, they are utilized for connecting pipelines, valves, and equipment where moderate pressure handling is required. Petrochemical and power plants use SS400 flanges for general fluid transportation and mechanical assemblies. They are also suitable for machinery manufacturing, fabrication workshops, and industrial maintenance projects. Their good weldability and durability make them a practical choice for systems that demand reliable joint connections without requiring high-temperature or high-pressure resistance.
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