Stainless Steel Weld Neck Flange Manufacturer in Pulau ujong, Singapore

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Andre Stainless is a top manufacturer and supplier of stainless steel weld neck flanges in Pulau Ujong, Singapore. Designed for high-pressure and high-temperature applications, these flanges have a long tapered hub that ensures excellent stress distribution through the weld joint. Made from high-quality stainless steels like SS304, SS316, and Duplex, Andre Stainless provides both standard and custom weld neck flanges according to ASME, ANSI, and DIN specifications. With precision machining, strict quality control, and a large local inventory, the company serves critical sectors such as oil and gas, chemical processing, power generation, and shipbuilding throughout Singapore and Southeast Asia.

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Stainless steel weld neck flanges are made from SS304, SS316, SS321, or Duplex 2205 alloys. These contain chromium (18–23%), nickel (8–13%), and molybdenum (2–3% in SS316) for enhanced corrosion and pitting resistance. Mechanical properties include tensile strength of 70,000–100,000 psi and yield strength of 30,000–80,000 psi depending on the grade. The tapered neck promotes even stress distribution and improved fatigue performance. These flanges are highly weldable, durable, and offer reliable sealing in cyclic pressure and high-temperature environments. All flanges are hydrotested and machined to a smooth, defect-free finish.

Stainless steel weld neck Flange Specifications

Size	1/2″ (15 NB) to 48″ (1200NB)
Standards	ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings.
Pressure Ratings	PN6, PN10, PN16, PN25, PN40, PN64 etc.
Pressure class	150#, 300#, 600#, 1500#
Dimensions and Pressure Ratings for Blind Flanges	MSS- SP-44, BS3293, ANSI, Table D, E, F, & H, BS4504, PN6, 10, 16, 25, 64 BS10, DIN Standards
Flange Face Type Manufacturer	Raised Face (RF), Flate Face (FF), Ring Type Joint (RTJ)
Coating/Surface Treatment	Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized.
Test	Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Manufacturer of	ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc. Blind Flange: -BS, EN, API 6A, ANSI, ASME, DIN, EN1092-1, UNI, JIS/ KS , BS4504, GB, AWWA C207, GOST, PSI 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 The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203; UNI2276

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

Why Choose Stainless Steel Weld Neck Flange From Andre Stainless?

Largest Inventory

Customer Support

On Time Deliveries

ISO Certified

Types of Stainless Steel Weld Neck Flange

SS Weld Neck Flanges

SS Weld Neck Flanges are stainless steel flanges designed for welding to pipes, providing strong, reliable joints with excellent strength and resistance to pressure and temperature changes in various applications.

Mss-sp-44 Weld Neck Flange

MSS-SP-44 Weld Neck Flange is a standard specification for carbon steel flanges, ensuring durability and high pressure handling. It features a long neck for improved stress distribution and welding integrity.

Pn16 Weld Neck Flange

PN16 Weld Neck Flange is a flange type rated for a pressure class of 16 bar, featuring a long neck design for strong welding and optimal stress distribution in piping systems.

Raised Face Weld Neck Flange

A Raised Face Weld Neck Flange features a protruding face that enhances sealing by increasing the contact area with the gasket. It provides a strong, reliable joint in high-pressure applications.

Forged Steel Weld Neck Flange

Forged Steel Weld Neck Flange is made from high-strength forged steel, providing excellent durability and performance under high pressure and temperature. Its design ensures reliable, leak-proof connections in piping systems.

Jis Weld Neck Flange

JIS Weld Neck Flange conforms to Japanese Industrial Standards, offering precise dimensions and high quality. It’s designed for strong, reliable welds and optimal performance in various piping and industrial applications.

We are committed to achieving exceptional customer outcomes through the prompt delivery of high-quality Stainless Steel Weld Neck Flanges. Our products comply to rigorous safety and quality standards. Ensuring outstanding performance in all industrial applications. Each flange undergoes thorough testing to confirm its suitability for industrial use. These certifications assure clients that our Stainless Steel Weld Neck Flanges have been meticulously tested for safety and performance, with regular factory inspections and audits conducted after each performance test.

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Stainless Steel Weld Neck Flange Uses

Stainless steel weld neck flanges are essential in high-stress piping systems. In Pulau Ujong, they are commonly used in oil refineries, offshore platforms, thermal power plants, petrochemical units, and shipbuilding yards. Weld neck flanges are ideal for piping systems that transport steam, gas, oil, or corrosive chemicals, providing a permanent, leak-proof connection through butt welding. Their robust design makes them suitable for fluctuating pressure and temperature conditions. These flanges are also used in boiler systems, process reactors, and pressure vessels, where secure and durable flange-to-pipe joints are crucial for ensuring operational safety and longevity.