--- title: Top 10 Stainless Steel Flanges Manufacturers and Companies in Southeast Asia date: 2026-05-06T00:00:00Z modified: 2026-06-04T01:00:15Z permalink: "https://www.longanflange.com/blog/top-stainless-steel-flanges-manufacturers-in-southeast-asia/" type: post status: publish excerpt: "" wpid: 3647 categories: - Blog featured_image: "https://www.longanflange.com/wp-content/uploads/2026/06/图片33.webp" featured_image_alt: Southeast Asia flange manufacturers stainless steel timestamp: 2026-06-04T01:00:15Z tags: - Blog --- Southeast Asia is no stranger to massive industrial demand for high-quality flanges. With the region’s rapid rise as a global manufacturing hub, securing reliable, high-performance stainless steel flanges is critical for major piping infrastructure projects across oil, gas, chemical processing, and marine sectors. As an established China stainless steel flanges manufacturer, Longan Flange keeps close tabs on this evolving market to ensure regional projects get precision engineering without supply chain delays. To help you navigate your options, we put together this list of the top ten stainless steel flange manufacturers and companies in Southeast Asia. ## **Southeast Asia’s Top Stainless Steel Flange Manufacturers at a Glance** Here’s a quick look at the leading SS flange manufacturers that are making waves across SEA. | **Company** | **Location** | **Est.** | **Compliance** | **Face Types Available** | | --- | --- | --- | --- | --- | | PT Peroni Karya Sentra | Indonesia | 1997 | ISO 9001, International Standards | Raised face, flat face, [RTJ](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/post/what-is-rtj-flange.md) | | Apec Metal Pte Ltd | Singapore | 2012 | ASTM A182, ASME B16.5 | Raised face, RTJ | | PT Wijaya Fittings Mfg. | Indonesia | 2002 | Global Oil and Gas Standards | Raised face, flat face | | Arita Valve Machinery | Malaysia | 1988 | EN, JIS, ANSI | Raised face, flat face | | Van Leeuwen Pipe and Tube | Singapore | 1979 | International Upstream Standards | Raised face, RTJ, custom | | Syarikat Logam Unitrade | Malaysia | 1977 | BS 10, Table Specifications | Flat face, raised face | | Feuer Stahl Thailand | Thailand | 2011 | Material Test Reports | Raised face, blind | | Eng Guan Hardware | Singapore | 1971 | Commercial Grade Standards | Slip-on, threaded | | PT Van Leeuwen Distribution | Indonesia | 2004 | International Processing Standards | Custom face, threaded | | OTG Engineering and Fittings | Malaysia | 2015 | DIN, EN, API | Custom, duplex configurations | Let’s get into each one. ### **1. PT Peroni Karya Sentra** - **Location:** Bekasi, West Java, Indonesia - **Founding Year:** 1997 - **Specialization:** Investment casting, CNC machining, and custom precision flanges ![PT Peroni Karya Sentra](https://www.longanflange.com/wp-content/uploads/2026/06/20260604-085301.webp) PT Peroni Karya Sentra is Indonesia’s dedicated manufacturer of high-grade stainless steel flanges, running an integrated platform that connects mold development, precision casting, and CNC machining under one roof. Their flanges serve demanding applications across oil, gas, chemical processing, and marine markets. Tight heat treatment control and multi-point non-destructive pressure testing ensure the kind of mechanical integrity that holds up against strict international criteria. ### **2. Apec Metal Pte Ltd** - **Location:** Pioneer Sector, Singapore - **Founding Year:** 2012 - **Specialization:** ASTM/ASME weld neck, slip-on, and socket weld flanges ![Apec Metal Pte Ltd](https://www.longanflange.com/wp-content/uploads/2026/06/图片24.webp) Apec Metal is right in the middle of Singapore’s industrial zone, turning out heavy-duty flanges to ASTM A182 and [ASME B16.5](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/post/asme-b16-5-pipe-flange-fitting-definition.md) standards in dual-certified F304/304L and F316/316L grades. Their location next to the Port of Singapore means fast turnaround for regional projects that can’t afford to wait. ### **3. PT Wijaya Fittings Mfg. Indonesia** - **Location:** Batam Island, Indonesia - **Founding Year:** 2002 - **Specialization:** Heavy industrial forged flanges and high-pressure pipe fittings ![PT Wijaya Fittings Mfg. Indonesia](https://www.longanflange.com/wp-content/uploads/2026/06/图片25.webp) PT Wijaya Fittings runs one of the largest forging operations for industrial piping components in the ASEAN zone. Hydraulic hammers and ring-rolling machinery on Batam Island produce seamless forged stainless steel flanges that go straight into refineries and offshore structures. High-vibration, high-pressure chemical workflows are what their production lines are built for. If you’re sourcing for offshore applications in the region, they’re a name worth having on your radar. ### **4. Arita Valve Machinery Industries** - **Location:** Tasek Merdeka, Ipoh, Malaysia - **Founding Year:** 1988 **Specialization:** Blind, slip-on, and companion pipe flanges ![Arita Valve Machinery Industries](https://www.longanflange.com/wp-content/uploads/2026/06/图片26.webp) A subsidiary of Unimech Group Berhad, Arita manufactures stainless steel flanges shaped to EN, JIS, and ANSI dimension systems alongside their industrial valve catalog. Water purification, agricultural processing, and manufacturing operations across Malaysia rely on them for an accessible, high-volume supply of standard engineering configurations. ### **5. Van Leeuwen Pipe and Tube Singapore** - **Location:** Pioneer Place, Singapore - **Founding Year:** 1979 - **Specialization:** Duplex, super duplex, and high-alloy flanges ![Van Leeuwen Pipe and Tube Singapore](https://www.longanflange.com/wp-content/uploads/2026/06/图片27.webp) Van Leeuwen Singapore handles complex value-added engineering work, including flange facing, tapping, and custom drilling. Their reserve of premium duplex and super duplex flanges covers hyper-corrosive upstream oil installations and green energy systems. Fully digitized logistics make them the core technical supply node for cross-border fulfillment across the Southeast Asian corridor. When a project needs fast, certified, specialty alloy components, this is the kind of operation that keeps things moving. ### **6. Syarikat Logam Unitrade Sdn Bhd** - **Location:** Shah Alam, Selangor, Malaysia - **Founding Year:** 1977 - **Specialization:** BS 10 infrastructure and welding flanges ![Syarikat Logam Unitrade Sdn Bhd](https://www.longanflange.com/wp-content/uploads/2026/06/图片28.webp) Under their house brand Alfran, Unitrade supplies an extensive line of 304 and 316 stainless steel welding flanges to BS 10 and table-specification standards. Their massive Selangor warehouse handles high-volume orders instantly, making them a practical partner for engineering procurement firms that need certified piping equipment without waiting on production lead times. ### **7. Feuer Stahl Thailand Co., Ltd.** - **Location:** Rayong, Thailand - **Founding Year:** 2011 - **Specialization:** Heavy-wall refinery flanges and high-temperature forgings ![Feuer Stahl Thailand Co., Ltd.](https://www.longanflange.com/wp-content/uploads/2026/06/图片29.webp) Feuer Stahl operates inside Thailand’s Eastern Economic Corridor, supplying heavy-duty flanges and high-pressure connectors to the region’s automotive, power generation, and petrochemical sectors. Their stainless steel inventory resists extreme thermal cycling and chemical erosion. Comprehensive material test reports come with every order, giving procurement teams full transparency for high-risk plant modifications. ### **8. Eng Guan Hardware Pte Ltd** - **Location:** King George’s Avenue, Singapore - **Founding Year:** 1971 - **Specialization:** Marine-grade slip-on and threaded flanges ![Eng Guan Hardware Pte Ltd](https://www.longanflange.com/wp-content/uploads/2026/06/图片30.webp) Five decades in the regional hardware supply network make Eng Guan a reliable source for commercial-grade stainless steel flanges covering ship repair, hotel infrastructure, and utility processing lines. They serve small-to-medium enterprises that need custom sizing without long production delays, balancing localized inventory with precise machining modifications. ### **9. PT Van Leeuwen Distribution Indonesia** - **Location:** Jakarta, Indonesia - **Founding Year:** 2004 - **Specialization:** Power generation and palm oil processing flanges ![PT Van Leeuwen Distribution Indonesia](https://www.longanflange.com/wp-content/uploads/2026/06/图片31.webp) PT Van Leeuwen Distribution runs processing centers in Jakarta, supplying carbon and stainless steel flanges for palm oil processing, mining, and power generation. Their value-added services cover custom face machining, precision edge tapering, and tailored threading that bridges gaps between older local infrastructure and modern international standards. For Indonesian projects dealing with legacy piping systems, that flexibility saves a lot of rework on site. ### **10. OTG Engineering and Fittings Sdn Bhd** - **Location:** Puchong, Selangor, Malaysia - **Founding Year:** 2015 **Specialization:** Non-standard custom-machined flanges and duplex connections ![OTG Engineering and Fittings Sdn Bhd](https://www.longanflange.com/wp-content/uploads/2026/06/图片32-1.webp) OTG Engineering fabricates machined flanges to proprietary customer blueprints alongside standard DIN, EN, and API configurations, with a material focus on duplex and high-nickel stainless steels for harsh, high-corrosion environments. Chemical processing developers and marine engineers across Malaysia turn to them when standard catalog options won’t solve the geometry challenge. Their rapid prototyping capability makes them useful for projects that need specialty components without a long development cycle. ## **What to Look for When Choosing a Stainless Steel Flanges Supplier in Southeast Asia** The right supplier depends on your project’s scale, timeline, and technical requirements. A few things worth checking before you commit: - **Material dual-certification:** Confirm your vendor provides Material Test Reports proving dual-certification, such as F304/304L or F316/316L, to prevent corrosion during welding. - **Pressure rating compliance:** Match flange class to your system’s pressure and temperature requirements, from ASME Class 150 for basic utility lines up to Class 600 or Ring-Type Joints for volatile chemical processing. - **Forged versus cast:** For high-vibration or high-pressure environments, specify forged flanges over cast versions since forged grain structures resist failure under stress. - **Lead times versus project scale:** Local stockholders work well for immediate maintenance needs, but large-scale projects need a manufacturing partner who can handle bulk volumes without raw material bottlenecks. Custom Large Diameter Flanges Manufacturer We specialize in manufacturing large diameter stainless steel flanges—custom-made to your specs, forged in-house, and machined with high precision. [Start Your Custom Project with Longan](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/page/custom-large-diameter-flange-manufacturer-factory.md) ## **Bridging the Gap with Longan Flange** Southeast Asia’s industrial growth shows no signs of slowing down, and procurement teams need suppliers who can keep pace with that demand. Local stockholders cover immediate needs well, but when a project calls for bulk volumes, custom oversized configurations, or specialty alloys, you need a manufacturing partner who can actually deliver at that scale. That’s where Longan Flange comes in. As a custom stainless steel pipe flange manufacturer with dedicated export routes to Singapore, Malaysia, Indonesia, Thailand, and Vietnam, we work with procurement teams to ensure the right components reach the right place on time. Whether you need a China manufacturer forging [stainless steel socket weld flange](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/post/socket-weld-flange-vs-weld-neck-flange.md) at scale or large-diameter configurations built to exact specifications, [get in touch with us](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/page/contact.md) and explore our [stainless steel flange catalog](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/page/stainless-steel-flange.md) and [custom flange options](http://longanflange.com/custom-flange/). [Get a Quote](https://www.longanflange.com/wp-content/uploads/wp-mfa-exports/page/contact.md)