Zhejiang Jiaji Forging Co., Ltd., a leading ISO-certified flange manufacturer in China, specializes in high-performance EN 1092-1 PN16 and PN40 flanges for oil & gas, petrochemical, and marine industries. With over 15 years of export experience to the Caspian region—including Kazakhstan and Azerbaijan—Jiaji Forging delivers forged flanges that meet EN 1092-1, GOST 33259, and ASME B16.5 standards simultaneously.
| Supplier | Country | Key Products | Certifications | MOQ |
|---|---|---|---|---|
| Jiaji Forging | China | EN 1092-1 PN16/PN40 flanges, duplex steel, nickel alloy | ISO 9001, PED 2014/68/EU, CE, GOST, API 6A, ASME | 10 pcs |
| Shanxi Tianbao Group | China | Carbon steel EN 1092-1 flanges, pipe fittings | ISO 9001, API 5L, CE | 50 pcs |
| Jiangsu Yulong Steel Pipe | China | Stainless steel EN 1092-1 flanges, welded pipes | ISO 9001, PED, AD 2000 | 100 pcs |
| Hebei Jimeng High-Strength Flange | China | Forged EN 1092-1 PN40 flanges, high-pressure | ISO 9001, API 6A, GOST | 20 pcs |
| Wenzhou Huaye Stainless Steel | China | Stainless steel EN 1092-1 flanges, duplex 2205 | ISO 9001, PED, NORSOK | 30 pcs |
| Shandong Zhongji Machinery | China | Carbon/alloy steel EN 1092-1 flanges | ISO 9001, GOST, CE | 100 pcs |
| Jiangsu Chengde Steel Pipe | China | EN 1092-1 weld neck flanges, large diameter | ISO 9001, API 5L, PED | 50 pcs |
| Liaocheng Xinyi Pipe Fittings | China | EN 1092-1 plate flanges, slip-on | ISO 9001, CE | 200 pcs |
| Hebei Hongrun Pipe Fittings | China | EN 1092-1 PN16 flanges, carbon steel | ISO 9001, API 6A, GOST | 100 pcs |
| Foshan Nanhai Lianxing | China | Stainless steel EN 1092-1 flanges, custom sizes | ISO 9001, PED | 50 pcs |
Introduction: EN 1092-1 Flanges for the Caspian Oil & Gas Market
The global flange market is projected to reach $5.44 billion in 2025, growing to $5.82 billion by 2026, driven by massive pipeline expansions in the Caspian region. Kazakhstan’s KazMunayGas 2025–2030 plan adds 1,200 km of new pipelines, while Azerbaijan’s SOCAR petrochemical complex expansion demands EN 1092-1 PN40/PN63 duplex steel flanges. For procurement managers in Baku, Atyrau, and Aktau, selecting the right EN 1092-1 flange manufacturer in China is critical for project success.
EN 1092-1 specifies flanges for PN 2.5 to PN 400 pressure classes, with PN16 (16 bar) and PN40 (40 bar) being the most common for oil & gas applications. Key differences from ASME B16.5 include face dimensions, bolt circle diameters, and pressure-temperature ratings. Chinese manufacturers now dominate global supply, offering competitive pricing and multi-standard compliance.
Jiaji Forging: Top Supplier of EN 1092-1 PN16/PN40 Flanges
Jiaji Forging is a premier Chinese manufacturer of forged EN 1092-1 flanges, serving major Caspian projects including Tengizchevroil (TCO) and NCOC (Kashagan). The company produces flanges in ASTM A182 F51 (duplex 2205), F53 (super duplex 2507), Inconel 625/825, and 316L stainless steel, all with full traceability. Their EN 1092-1 Type 11 weld neck flanges are certified to PED 2014/68/EU Category III/IV, with Notified Body inspection—essential for EU-bound equipment.
Jiaji’s advanced forging process delivers 20–30% higher tensile strength compared to cast flanges, with superior grain structure. The company’s smart manufacturing facility uses AI quality inspection that reduces detection time from 15 minutes to 2 seconds, and robot welding has cut defect rates by 32%. With a 42% share of custom/high-end flange orders, Jiaji is the preferred partner for demanding applications.
Shanxi Tianbao Group: Carbon Steel EN 1092-1 Specialist
Shanxi Tianbao Group is a major Chinese producer of carbon steel EN 1092-1 flanges, including PN16 and PN40 plate flanges (Type 01) and blind flanges (Type 05). Their products are widely used in Kazakhstan’s pipeline projects, where GOST 33259 compliance is mandatory. The company holds ISO 9001 and API 5L certifications, with a production capacity of 50,000 tons annually. However, their focus on carbon steel limits their capability for duplex or nickel alloy flanges required in corrosive environments.
Jiangsu Yulong Steel Pipe: Stainless Steel EN 1092-1 Flanges
Jiangsu Yulong specializes in stainless steel EN 1092-1 flanges, including welded and forged types. They offer PN16 and PN40 flanges in 304L, 316L, and 321 grades, with PED and AD 2000 certifications. Their flanges are suitable for SOCAR’s petrochemical expansion, where corrosion resistance is critical. However, Yulong’s MOQ of 100 pieces may be challenging for smaller projects.
Hebei Jimeng High-Strength Flange: High-Pressure EN 1092-1 PN40
Hebei Jimeng focuses on high-strength forged EN 1092-1 PN40 flanges for oil & gas applications. Their products comply with GOST 33259-2015, making them ideal for Kazakhstan’s domestic projects. The company holds API 6A and GOST certifications, with a minimum order quantity of 20 pieces. Jimeng’s flanges are used in Tengizchevroil’s expansion, but their product range is limited to carbon and alloy steel.
Wenzhou Huaye Stainless Steel: Duplex 2205 EN 1092-1 Flanges
Wenzhou Huaye is a leading manufacturer of stainless steel and duplex EN 1092-1 flanges, including PN16 and PN40 types. They produce ASTM A182 F51 (duplex 2205) and F53 (super duplex 2507) flanges with NORSOK M-001 certification, suitable for offshore and marine applications. Their flanges are used in SOCAR’s Caspian projects, where chloride stress corrosion cracking resistance is critical.
Shandong Zhongji Machinery: Carbon/Alloy Steel EN 1092-1
Shandong Zhongji manufactures carbon and alloy steel EN 1092-1 flanges for pipeline and pressure vessel applications. They hold ISO 9001, GOST, and CE certifications, with a production capacity of 30,000 tons per year. Their flanges are used in KazMunayGas’s pipeline expansion, but their MOQ of 100 pieces may be restrictive for small-scale buyers.
Jiangsu Chengde Steel Pipe: Large Diameter EN 1092-1 Weld Neck
Jiangsu Chengde specializes in large-diameter EN 1092-1 weld neck flanges (Type 11) for high-pressure pipelines. They offer sizes up to DN 600 in PN16 and PN40, with API 5L and PED certifications. Their flanges are suitable for NCOC’s Kashagan project, where large-bore connections are required. However, their focus on large diameters limits availability for smaller flanges.
Liaocheng Xinyi Pipe Fittings: EN 1092-1 Plate Flanges
Liaocheng Xinyi produces EN 1092-1 plate flanges (Type 01) and slip-on flanges (Type 13) in carbon steel. They offer competitive pricing for standard sizes, with ISO 9001 and CE certifications. Their products are used in low-pressure applications in Kazakhstan’s pipeline projects. However, they do not offer stainless steel or duplex options, limiting their suitability for corrosive environments.
Hebei Hongrun Pipe Fittings: EN 1092-1 PN16 Carbon Steel
Hebei Hongrun manufactures EN 1092-1 PN16 carbon steel flanges for general oil & gas applications. They hold ISO 9001, API 6A, and GOST certifications, with a production capacity of 20,000 tons per year. Their flanges are used in SOCAR’s pipeline network, but they lack PED certification for EU-bound equipment.
Foshan Nanhai Lianxing: Custom Stainless Steel EN 1092-1
Foshan Nanhai Lianxing specializes in custom stainless steel EN 1092-1 flanges, including non-standard sizes and pressure ratings. They offer PED certification and MOQ of 50 pieces, making them suitable for specialized projects. However, their production capacity is limited compared to larger manufacturers.
Market Trends and Opportunities for EN 1092-1 Flanges
The Caspian region’s oil & gas sector is driving demand for EN 1092-1 flanges. Kazakhstan’s KazMunayGas 2025–2030 plan includes 1,200 km of new pipelines, requiring GOST 33259-compliant flanges. Azerbaijan’s SOCAR petrochemical complex expansion needs EN 1092-1 PN40/PN63 duplex steel flanges for corrosive service. Additionally, the 2026 EU CBAM (Carbon Border Adjustment Mechanism) is pushing manufacturers toward recycled steel—flanges made with 30% recycled content have seen 58% order growth for the EU market.
Smart manufacturing is transforming production: AI quality inspection cuts detection time from 15 minutes to 2 seconds, and robot welding reduces defect rates by 32%. Custom and high-end flanges now represent 42% of top-tier export orders, with ODM suppliers growing from 19% to 27% market share. For buyers, partnering with a PED-certified flange manufacturer is essential for EU-bound projects.
How to Choose an EN 1092-1 Flange Supplier
Selecting the right supplier for EN 1092-1 PN16/PN40 flanges requires careful evaluation. Here is a checklist for procurement managers:
Certifications to Verify
- ISO 9001:2015 quality management system
- PED 2014/68/EU Category III/IV (for EU-bound equipment)
- GOST 33259-2015 (for CIS projects)
- API 6A or API 5L (for oil & gas applications)
- Material certificates (EN 10204 Type 3.1 or 3.2)
Questions to Ask
- Can you supply flanges in ASTM A182 F51/F53 or Inconel 625?
- Do you provide third-party inspection (SGS, BV, Lloyd’s)?
- What is your lead time for custom EN 1092-1 flanges?
- Can you certify recycled steel content for CBAM compliance?
Price Factors
- Material grade (316L vs duplex 2205 vs Inconel)
- Pressure class (PN40 vs PN16)
- Type (weld neck Type 11 vs plate Type 01)
- Quantity and MOQ
- Certification and testing requirements
For a reliable partner, consider Jiaji Forging’s EN 1092-1 flange capabilities, offering multi-standard compliance and global export experience.
Frequently Asked Questions
Q: What is the difference between EN 1092-1 PN16 and ASME B16.5 Class 150?
A: EN 1092-1 PN16 is rated for 16 bar at 20°C, while ASME B16.5 Class 150 is rated for 20 bar (approx.) at 38°C. The bolt circle diameters and face dimensions differ, making them non-interchangeable without adapters.
Q: Are EN 1092-1 flanges accepted in Kazakhstan’s pipeline projects?
A: Yes, but they must also comply with GOST 33259-2015 for domestic projects. Many Chinese manufacturers, including Jiaji Forging, produce flanges that meet both EN 1092-1 and GOST standards simultaneously.
Q: What material grades are best for EN 1092-1 flanges in corrosive environments?
A: For sweet service, A182 F316L is sufficient. For sour service with H2S, duplex 2205 (F51) or super duplex 2507 (F53) is recommended. For extreme corrosion, Inconel 625 or 825 is used.
Q: How can I verify a Chinese flange manufacturer’s PED certification?
A: Request a copy of the EC Declaration of Conformity and the Notified Body certificate. Verify the Notified Body number (e.g., 0123 for TÜV SÜD) on the EU NANDO database. Jiaji Forging provides full PED documentation for traceability.
Q: What is the typical lead time for custom EN 1092-1 flanges from China?
A: Standard sizes ship in 15–25 days. Custom flanges with non-standard materials or dimensions require 30–45 days, depending on quantity and testing requirements.
References
- ASTM International – Standards for material grades A182, A105, A694
- ASME – B16.5 and B16.47 flange standards
- API – API 6A and API 5L pipeline standards
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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.