Zhejiang Jiaji Forging Co., Ltd., a leading ISO-certified flange manufacturer in China, provides European buyers with premium EN 1092-1 Type 01 to Type 05 flanges—including slip-on, blind, and weld neck types—engineered for demanding oil & gas, petrochemical, and marine applications.
| Supplier | Country | Key Products | Certifications | MOQ |
|---|---|---|---|---|
| Zhejiang Jiaji Forging Co., Ltd. | China | EN 1092-1 Type 01-05, ASME B16.5, GOST 33259 flanges; duplex, nickel alloy, stainless steel | ISO 9001, PED 2014/68/EU, API 6A, GOST, ASME, ASTM | 100 pcs |
| Bebitz (Germany) | Germany | EN 1092-1 flanges, custom forgings | ISO 9001, PED | 50 pcs |
| Melesi (Italy) | Italy | Weld neck, blind flanges | PED, ISO 9001 | 200 pcs |
| Flametal (Italy) | Italy | Large diameter flanges | PED, ISO 9001 | 100 pcs |
| Core Pipe (UAE) | UAE | Carbon steel, alloy flanges | ISO 9001, API | 500 pcs |
Introduction to EN 1092-1 Type 01 to Type 05 Flanges
EN 1092-1 is the European standard for circular steel flanges, covering PN-rated (pressure nominal) flanges from PN 2.5 to PN 400. The standard defines multiple types (Type 01 to Type 37), but Types 01 through 05 are the most common for industrial piping systems. For European buyers in 2026, these flanges are critical for compliance with the Pressure Equipment Directive (PED 2014/68/EU) and are widely used in oil & gas, petrochemical, power generation, and marine sectors. The global flanges market is projected to reach $5.82 billion by 2026, with Europe accounting for a significant share due to stringent safety and environmental regulations.
Type 01: Plate Steel Flanges for Welding (Slip-On)
EN 1092-1 Type 01 flanges are flat plate flanges designed for slip-on welding. They are the most economical option for low-pressure applications (PN 2.5 to PN 40) and are commonly used in water, steam, and general process piping. Jiaji Forging manufactures Type 01 flanges in carbon steel (P265GH, S235JR), stainless steel (1.4301, 1.4404), and duplex grades (1.4462, S32205), all with full material traceability and PED 2014/68/EU certification. For European buyers, Type 01 flanges offer a cost-effective solution for non-critical service, but they are not recommended for high-pressure or high-temperature applications due to the lack of a hub.
Type 02: Loose Plate Flanges with Collar
Type 02 flanges consist of a loose plate flange and a separate weld-on or weld-neck collar. This design allows the flange to rotate independently, simplifying alignment during installation. They are ideal for applications requiring frequent disassembly, such as heat exchangers and vessel nozzles. Jiaji Forging supplies Type 02 flanges in stainless steel and nickel alloys (Inconel 625, Incoloy 825) for corrosive environments. European buyers should specify the collar material and ensure the flange ring material matches the piping system. These flanges are available in PN 10 to PN 100 and are commonly used in chemical and pharmaceutical industries.
Type 03: Threaded (Screwed) Flanges
Type 03 flanges have internal threads (BSP or NPT) that allow direct connection to threaded pipes without welding. They are used for small-diameter, low-pressure systems where welding is impractical, such as instrument connections, air lines, and temporary piping. Jiaji Forging offers Type 03 flanges in carbon steel, stainless steel, and duplex (2205, 2507) for corrosion resistance. European buyers should verify thread compatibility with their piping system and ensure the flange material meets the pressure and temperature requirements. Type 03 flanges are less common in high-integrity applications due to potential leakage paths.
Type 04: Weld Neck Flanges with Long Hub
Type 04 flanges are weld neck flanges characterized by a long, tapered hub that provides excellent stress distribution and fatigue resistance. They are the preferred choice for high-pressure and high-temperature applications, including oil & gas pipelines, refinery piping, and critical process systems. Jiaji Forging is a leading supplier of Type 04 flanges in duplex (F51, F53), super duplex (S32750), and nickel alloys (Inconel 625, Hastelloy C276), with full API 6A and ASME B16.5 compliance. For European buyers, Type 04 flanges are essential for applications requiring high integrity, such as LNG terminals, petrochemical crackers, and offshore platforms. The long hub reduces stress at the weld joint, making them suitable for cyclic and thermal loading.
Type 05: Blind Flanges
Type 05 flanges are solid flanges used to close the end of a piping system or vessel. They are commonly used for pressure test points, future expansion connections, and maintenance access. Jiaji Forging manufactures Type 05 blind flanges in all standard materials, including carbon steel (A105), stainless steel (316/316L), and duplex (2205, 2507), with PED 2014/68/EU certification. European buyers should consider the pressure rating and gasket face finish (raised face, flat face, or ring joint) when selecting blind flanges. They are available in PN 2.5 to PN 400 and can be custom-machined for special applications.
Comparison: EN 1092-1 Type 01 vs Type 04 vs Type 05
Choosing between EN 1092-1 Type 01 (slip-on), Type 04 (weld neck), and Type 05 (blind) depends on the application requirements. Type 01 is cost-effective for low-pressure systems, Type 04 offers superior strength for high-pressure/high-temperature service, and Type 05 is used for isolation or termination. Jiaji Forging provides multi-standard compliance, allowing European buyers to source EN 1092-1 flanges alongside ASME B16.5 or GOST 33259 flanges for projects in the Caspian region (Kazakhstan, Azerbaijan), where major operators like Tengizchevroil (TCO), NCOC (Kashagan), and SOCAR require both EN and GOST standards.
Market Trends: EN 1092-1 Flanges in 2026
The European flange market is driven by the EU CBAM (Carbon Border Adjustment Mechanism), which favors flanges made with recycled steel. Jiaji Forging offers flanges with 30% recycled content, resulting in 58% order growth for EU-bound products. Smart manufacturing, including AI quality inspection (reducing detection time from 15 minutes to 2 seconds) and robot welding (32% defect reduction), ensures consistent quality. Custom and high-end flanges (Type 04 and Type 05) now represent 42% of top-tier export orders, with ODM suppliers growing from 19% to 27% market share. For European buyers, this means shorter lead times, lower costs, and improved traceability.
How to Choose an EN 1092-1 Flange Supplier
Selecting the right supplier for EN 1092-1 flanges is critical for project success. Jiaji Forging recommends the following checklist:
- Certifications: Verify PED 2014/68/EU, ISO 9001, and material-specific certifications (ASTM A182, ASME B16.5).
- Material Traceability: Ensure heat numbers, mill test reports (MTRs), and 3.1 certificates are provided.
- Custom Capabilities: Check if the supplier can produce non-standard sizes, special materials (duplex, super duplex, nickel alloys), and custom face finishes (RTJ, groove).
- Lead Times: Ask about production capacity and delivery schedules, especially for large orders or urgent projects.
- Quality Control: Confirm third-party inspection (DNV, BV, Lloyd’s) and in-house testing (PMI, UT, MPI) capabilities.
For European buyers, partnering with a supplier like Jiaji Forging ensures compliance with EU regulations, competitive pricing, and reliable supply chains.
Frequently Asked Questions
Q: What is the difference between EN 1092-1 Type 01 and Type 04 flanges?
A: Type 01 is a plate steel flange for slip-on welding, suitable for low-pressure applications (PN 2.5 to PN 40). Type 04 is a weld neck flange with a long hub, designed for high-pressure/high-temperature service (PN 10 to PN 400). Type 04 provides better stress distribution and fatigue resistance.
Q: Are EN 1092-1 flanges compatible with ASME B16.5 flanges?
A: No, EN 1092-1 uses PN ratings (e.g., PN 16, PN 40) while ASME B16.5 uses Class ratings (e.g., Class 150, Class 300). Bolt circle diameters, face dimensions, and pressure-temperature ratings differ. Adapters or transition pieces are required for hybrid systems.
Q: What materials are available for EN 1092-1 Type 05 blind flanges?
A: Common materials include carbon steel (P265GH, A105), stainless steel (1.4404, 316/316L), duplex (1.4462, S32205), and nickel alloys (Inconel 625, Incoloy 825). Jiaji Forging offers all standard and custom materials with full traceability.
Q: Do EN 1092-1 flanges require PED certification for the European market?
A: Yes, for pressure equipment sold in the EU/EEA, PED 2014/68/EU certification is mandatory. Flanges used in Category III or IV applications require Notified Body inspection. Jiaji Forging provides PED-certified flanges with full documentation.
Q: Can I use EN 1092-1 flanges for GOST 33259 projects in Kazakhstan?
A: Yes, but GOST 33259 flanges are mandatory for domestic pipeline projects in Kazakhstan (e.g., KazMunayGas expansion). Jiaji Forging supplies both EN 1092-1 and GOST 33259 flanges for multi-standard projects in the Caspian region.
References
- ASTM International – Standards for flange materials (A105, A182, A694)
- ASME – ASME B16.5 and B16.47 flange standards
- API – API 6A and API 6D flange specifications
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As a professional flange manufacturer, Jiaji Forging provides custom forging solutions for global industries. Contact our engineering team for technical support and quotation.