Leading Manufacturer & Exporter of
Stainless Steel Flanges to Indonesia
Werner Flanges is a globally recognized stainless steel flanges manufacturer with over two decades of experience supplying precision-engineered flange solutions to Indonesia's most demanding industrial sectors. From the oil and gas platforms of the Java Sea to the petrochemical refineries of East Kalimantan and the power generation infrastructure of Sumatra, our stainless steel flanges are engineered to perform under the extreme pressures, temperatures, and corrosive conditions that define Indonesian industrial operations.
We supply the full spectrum of stainless steel flanges in grades 304, 304L, 316, 316L, 321, 347, and Duplex/Super Duplex, manufactured to ASME B16.5, ASTM A182, DIN, and BS standards. Our product range covers all seven flange types — Weld Neck, Slip On, Blind, Socket Weld, Threaded, Lap Joint, and Orifice — in sizes from ½” to 60″ across pressure classes 150# through 2500#.
With a manufacturing facility equipped with closed-die forging presses, CNC machining centers, and an in-house metallurgical laboratory, Werner Flanges delivers certified stainless steel flanges with full material traceability, third-party inspection, and documentation packages that meet the requirements of Indonesia’s major project contractors, including Pertamina, PLN, and international EPC firms operating across the archipelago.
Our logistics network ensures reliable sea freight delivery to Jakarta (Tanjung Priok), Surabaya (Tanjung Perak), Medan (Belawan), and other major Indonesian ports within 18–25 days, with expedited air freight available for urgent procurement needs.
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Specifications
| Specification | Details |
|---|---|
| Pressure Rating | Class 150 to Class 2500 |
| Flange Type | Plate Flange |
| Facing Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Size Range | ½” to 24” (DN 15 to DN 600) |
| Temperature Range | -29°C to +593°C (Depending on Material & Pressure Class) |
| Applications | Oil & Gas, Petrochemical, Power Generation, Water Treatment, Marine & Industrial Sectors |
| Manufacturing Process | Forged / Machined |
| Certification | EN 10204 3.1 / 3.2, IBR, NACE MR0175 / ISO 15156 (as applicable) |
Matel and Grade
| Type of Materials | Common Specifications / Customization Available on Request |
|---|---|
| Duplex Steel | ASTM/ASME A182 F51, F60, F61, UNS S31803, UNS S32205 |
| Super Duplex Steel | ASTM/ASME A182 F53, F55, UNS S32750, UNS S32760, F44 (6Mo) |
| Stainless Steel | ASTM/ASME A182 F304, F304L, F316, F316L, F310, F317L, F321, F347 |
| Carbon Steel | ASTM A105, A350 LF1, LF2, LF3, A266 Class 1/2, A694 F42 to F70, A765 Gr. II |
| Alloy Steel | ASTM/ASME A182 F1, F5, F9, F11, F12, F22 |
| Non-Ferrous Alloys | Titanium, Brass, Admiralty Brass, Copper Nickel, Nickel Alloys, Hastelloy |
| Titanium | ASTM/ASME B381 Gr.1, Gr.2, Gr.5, Gr.7, Gr.12, Gr.16 |
| Copper Nickel | ASTM B151 UNS C70600 (Cu-Ni 90/10), C71500 (Cu-Ni 70/30) |
| Brass, Al-Brass | ASTM B152 UNS C26000, C27200, C28000; ASTM B111 for Al-Brass |
| Nickel Alloys | ASTM B160, B161, B564 – UNS N02200, N02201, N04400, N08800, N08825, N06600, N06601, N06625, Monel K500 |
| Alloy 20 | ASTM B462 UNS N08020 |
| Hastelloy | ASTM B564 UNS N10276 (Hastelloy C276), N06022 (Hastelloy C22) |
| Cladded Materials | ASTM B898, B265, B424 or custom explosion/clad bonding using dissimilar metals |
| Titanium-Steel, Nickel-Steel, Titanium-Copper, Stainless Steel-Carbon Steel, Bimetallic/Trimetallic Combinations |
Types of Flanges
| Slip On Flanges | Weld Neck Flanges | Blind Flanges | Socket Weld Flanges | Threaded Flanges |
| Lap Joint Flanges | Reducing Flanges | Orifice Flanges | Long Weld Neck Flanges | Plate Flanges |
Industries and Applications We Supply
| Industry | Applications |
|---|---|
Oil & Gas Industry |
|
Petrochemical & Refining |
|
Power Generation |
|
Water & Wastewater Treatment |
|
Frequently Asked Questions (FAQs)
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Q1: What stainless steel flange grades are most commonly specified for Indonesian offshore and coastal applications?
- ASTM A182 F316L is the standard specification for the majority of coastal and offshore applications in Indonesia, due to its molybdenum content providing enhanced chloride corrosion resistance. For more aggressive conditions — particularly subsea, high-chloride produced water systems, and geothermal brine service — duplex 2205 (F51) and super duplex 2507 (F53) are increasingly specified. Werner Flanges stocks all three grades and can supply with short lead times.
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Q2: Can Werner Flanges supply flanges that comply with NACE MR0175 for sour gas service in Indonesian oil and gas fields?
- Yes. Flanges for H₂S-containing service are manufactured and tested to NACE MR0175 / ISO 15156 requirements. This includes hardness control (typically ≤22 HRC / 248 HB for most grades), specific heat treatment, and documentation of compliance. NACE-compliant flanges are a standard offering for our Indonesian oil and gas customers.
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Q3: What is the typical lead time for stainless steel flanges to Indonesia?
- Standard items in common grades (F304L, F316L) and sizes are typically dispatched within 5–10 business days from order confirmation. Sea freight transit to Tanjung Priok (Jakarta) is 18–22 days, and to Tanjung Perak (Surabaya) is 20–24 days. For urgent requirements, air freight delivery to Jakarta or Surabaya is available in 3–5 days from our facility.
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Q4: Do Werner Flanges products comply with SNI (Standar Nasional Indonesia) requirements?
- Werner Flanges products are manufactured to internationally recognized ASME B16.5 and ASTM A182 standards, which are accepted and specified throughout Indonesia’s industrial sector. For specific projects requiring SNI conformity marking, please contact our sales team to discuss the applicable requirements for your project scope.
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Q5: Can Werner Flanges accommodate third-party inspection at the manufacturing facility?
- Yes. We regularly facilitate third-party inspection at our facility by TÜV, DNV GL, Bureau Veritas, SGS, and other inspection bodies specified by Indonesian project owners and EPC contractors. Inspection coordination, including witness testing, is arranged at no additional delay to standard lead times when scheduled in advance.
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Q6: What is the minimum order quantity (MOQ) for stainless steel flanges to Indonesia?
- Werner Flanges accepts orders of all sizes — from single-flange procurement for maintenance and replacement needs to full project bulk orders of thousands of pieces. There is no minimum order quantity. Pricing is naturally more competitive on higher volumes, but we understand the operational realities of Indonesian industrial procurement and will supply what is needed.
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Q7: Are duplex and super duplex flanges available from stock, or are they made to order?
- Common duplex 2205 (F51) flanges in standard sizes (2″ to 12″, Class 150# and 300#) are typically available from stock or with short production lead times. Super duplex F53 and F55, and duplex flanges in larger sizes or higher pressure classes, are manufactured to order with lead times of 3–5 weeks. Contact our team for current stock availability.
GET A QUOTE
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Email: sales@wernerflanges.com
