Leading Flanges Manufacturer & Exporter
to Indonesia
Werner Flanges is Indonesia's trusted international supplier of premium-quality flanges, serving the archipelago nation's dynamic oil and gas, petrochemical, mining, power generation, and infrastructure sectors with precision-engineered piping components built to international standards. With decades of manufacturing expertise and a deep understanding of Southeast Asia's industrial requirements, we supply flanges to major industrial centers including Jakarta, Surabaya, Balikpapan, Bontang, Cilegon, Batam, and Medan — delivering quality components that keep Indonesia's critical industries running safely and efficiently.
As the world’s fourth most populous nation and Southeast Asia’s largest economy, Indonesia operates one of the region’s most extensive hydrocarbon and minerals processing infrastructures. From Pertamina’s refineries and Chevron Pacific Indonesia’s upstream operations in Sumatra and Kalimantan to Freeport-McMoRan’s mineral processing facilities in Papua and PUSRI’s fertilizer complexes in Palembang, Werner Flanges supplies the forged flange components that form the backbone of the nation’s industrial piping systems.
Our comprehensive product range includes carbon steel flanges (ASTM A105), stainless steel flanges (ASTM A182 F304/316), alloy steel flanges (ASTM A182 F11/F22), and duplex/super duplex flanges for corrosive service. All products conform to ASME B16.5 and ASME B16.47 dimensional standards, available in pressure classes from 150# to 2500# and sizes from ½” to 60″ NPS. Every flange undergoes rigorous quality testing and ships with comprehensive documentation satisfying Indonesian customs requirements and client quality assurance protocols.
As a direct manufacturer, Werner Flanges delivers competitive pricing with typical delivery to Tanjung Priok Port (Jakarta) or Tanjung Perak Port (Surabaya) within 18–25 days via sea freight. For urgent project requirements, expedited air freight to Soekarno-Hatta International Airport or Sultan Aji Muhammad Sulaiman Airport (Balikpapan) reduces transit time to 5–7 days. Whether your project demands a few specialty flanges for a maintenance shutdown or thousands of pieces for a grassroots refinery expansion, Werner Flanges combines manufacturing flexibility, quality assurance, and logistics expertise to meet Indonesia's industrial demands.
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
| Weld Neck Flanges Supplier | Raised Face Weld Neck Flanges | Flat Face Weld Neck Flanges | RTJ Weld Neck Flanges | Long Weld Neck Flanges |
| High Pressure Weld Neck Flanges | Forged Weld Neck Flanges | Reducing Weld Neck Flanges | Industrial Weld Neck Flanges | Custom Weld Neck Flanges |
Industries and Applications We Supply
| Industry | Applications |
|---|---|
Oil & Gas Industry |
Indonesia has been a major oil and gas producer for over a century, with upstream, midstream, and downstream operations across Sumatra, Java, Kalimantan, Sulawesi, and eastern islands.
Upstream Applications: Wellhead connections, separators, production manifolds, flowlines, and high-pressure injection pipelines. Operators include Pertamina, BP, TotalEnergies, and ConocoPhillips. Midstream & LNG: Subsea tie-ins, compressor stations, pipeline networks, and LNG plants like Bontang LNG and Tangguh LNG require ASTM A105 carbon steel, A182 F316 stainless steel, and ASTM A350 LF2 low-temperature flanges for cryogenic service down to -196°C. |
Petrochemical & Chemical Processing |
Petrochemical hubs in Cilegon (Banten) and Tuban (East Java) host major plants operated by Chandra Asri, Lotte Chemical Titan, and joint ventures producing polyethylene, polypropylene, styrene monomer, and derivatives.
Applications: Cracker feed systems, distillation columns, polymer production trains, utility circuits, and refinery expansion projects under Indonesia’s RDMP at Balikpapan, Balongan, and Cilacap. |
Mining & Minerals Processing |
Indonesia is the world’s top nickel producer and a major producer of coal, copper, gold, tin, and bauxite. Key operators include PT Vale Indonesia (nickel) and Freeport-McMoRan (Grasberg copper/gold).
Applications: Flanges for aggressive conditions including sulfuric acid, slurry, high-temperature streams, and corrosive reagents, typically using stainless steel (F316/F316L), duplex (F51), or specialty alloys. |
Power Generation & Infrastructure |
Indonesia’s growing electricity demand is supported by PLN-operated power plants across Java, Bali, Sumatra, and Kalimantan, alongside the country’s large geothermal potential at Kamojang, Salak, Darajat, and Sarulla.
Applications: Steam systems, cooling water circuits, fuel oil handling systems, and geothermal wellhead piping using carbon steel and specialty alloys resistant to high-temperature and brine conditions. |
Frequently Asked Questions (FAQs)
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1. do you supply flanges compliant with pertamina engineering standards (pes)?
- yes, werner flanges manufactures flanges meeting pertamina’s material and quality requirements, including documentation packages aligned with pes specifications. we can accommodate enhanced testing, third-party inspection by pertamina-approved agencies, and supplementary requirements specified in pertamina purchase orders. our experience supplying multiple pertamina refinery projects enables us to efficiently navigate vendor qualification and material approval processes.
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2. what incoterms do you offer for indonesia deliveries?
- werner flanges offers fob (our dispatch port), cfr (cost and freight to indonesian port), and cif (cost, insurance, freight to indonesian port) incoterms for sea freight shipments. dap (delivered at place) arrangements to project sites within indonesia can be accommodated for large orders through our logistics partners. incoterms preferences are discussed and agreed during quotation, with transparent cost breakdowns for each option.
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3. can you provide flanges with sni certification for indonesian regulatory compliance?
- for applications requiring sni conformity marks, werner flanges coordinates with bsn-accredited certification bodies to obtain required certificates. not all flange applications in indonesia require sni certification, but where sni is mandated by project specifications or regulatory requirements, we can facilitate the necessary conformity assessment process. contact our sales team to discuss your specific certification requirements.
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4. how do you handle indonesian import duties and taxes?
- werner flanges provides accurate hs codes (harmonized system classification) for indonesian customs declarations, ensuring correct import duty assessment. standard carbon steel flanges (astm a105) typically fall under hs code 7307.91, while stainless steel flanges fall under 7307.21/7307.22. our commercial invoices include all required declarations for bea cukai clearance. import duties, vat (ppn 11%), and income tax (pph 22) applicable to indonesian imports are the buyer’s responsibility; however, our ppjk partners can manage the complete customs clearance process on your behalf.
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5. do you stock flanges in indonesia for faster local delivery?
- werner flanges currently operates as an exporting manufacturer without local indonesian inventory. however, our sea freight delivery times of 18–26 days from order to port arrival serve most project planning cycles. for recurring maintenance requirements or project stockpiling needs, we can pre-position inventory at our manufacturing facility with reserved allocation for specific indonesian customers. we also work with local indonesian trading partners for emergency sourcing when project schedules demand immediate supply.
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6. what is the minimum order quantity for indonesia?
- werner flanges does not impose minimum order quantities. we supply from single replacement flanges to complete project packages of thousands of pieces. for small quantities, we consolidate shipments to optimize freight. for large project orders, we develop customized supply schedules aligned with site construction requirements and delivery timing. contact our sales team with your specific quantity and delivery requirements for a tailored proposal.
