Quan Flanges and Plates, based in Da Nang, Vietnam, is a trusted manufacturer and supplier of Alloy Steel Lap Joint Flanges, delivering top-notch solutions for industrial piping systems. These flanges are well-known for their durability, flexibility, and impressive resistance to corrosion, pressure, and temperature. Designed to work seamlessly with stub ends, lap joint flanges make alignment and quick assembly or disassembly a breeze, which is a real plus for systems that need regular maintenance. Quan Flanges and Plates prides itself on precision engineering, timely deliveries, and adherence to global quality standards, catering to industries like oil, gas, petrochemical, power generation, and marine engineering.
Alloy Steel Lap Joint Flanges are crafted from carbon steel mixed with elements like chromium (0.5–9%), molybdenum (0.2–1%), nickel, vanadium, and manganese, which boosts their strength, hardness, and wear resistance. On the mechanical side, they showcase a tensile strength of 450–850 MPa, yield strength ranging from 240–600 MPa, and an elongation of 20–30%. Their forging and heat treatment processes enhance toughness, fatigue strength, and overall durability, making them ideal for high-pressure, high-temperature, and corrosive industrial settings.
| Specification | ASTM A182 / ASME SA182 |
|---|---|
| Size Chart | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
| Standards | ANSI/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, MAlloy S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092 |
| PRESSURE Rating ANSI | Class 150 LBS, 300 LBS, f1 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| PRESSURE Calculation in DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Coating | Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production Technique | Forged, Heat treated and machined |
| Connect Type/ Flange Face Type | Raised 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 |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Prealloy-steel 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, MAlloy SP44, ASA, API-605, AWWA, Custom Drawings ANSI : ANSI B16.5, ANSI B16.47(API605), MAlloy SP44, ANSI B16.36, ANSI B16.48 ANSI B16.5, ANSI B16.47, MAlloy 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 The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276 |
| Grades | Alloy Steel F1, F5, F9, F11, F22, F91 |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
Quan Flanges, a leading supplier in Da Nang, Vietnam, offers an extensive selection of Alloy Steel Lap Joint 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.
These Alloy Steel Lap Joint Flanges are commonly found in piping systems that need to be taken apart frequently for inspection, cleaning, or maintenance. They’re often used in oil refineries, petrochemical plants, chemical processing units, and power generation facilities. Their ability to handle high pressure and temperature makes them perfect for boilers, pipelines, and heat exchangers. The marine engineering and shipbuilding sectors also rely on them for their corrosion resistance and ease of installation. Plus, they find applications in the food, pharmaceutical, and water treatment industries, where dependable, flexible, and long-lasting flange connections are crucial for smooth operations.
Yes, we offer custom sizes for Alloy Steel Lap Joint Flanges to meet specific project needs. Our team at Quan Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@quanflanges.com.
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.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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