Compliant with European Norm EN 1092-1 Type 01, DIN standards, and ASME B16.5 requirements. Supplied with EN 10204 3.1 inspection certification and 100% material traceability.
As the capital city of Germany and a crucial hub for northern European infrastructure transformation, Berlin represents a highly dynamic industrial landscape. The metropolitan region of Berlin-Brandenburg is undergoing a massive modernisation wave driven by green energy integration, district heating decarbonization, municipal wastewater overhaul, and high-tech facility construction in industrial clusters such as Adlershof Technology Park and Siemensstadt 2.0.
At the center of this infrastructure overhaul lies the requirement for dependable, code-compliant piping connections. Plain Flanges (commonly designated as plate flanges, flat flanges, or slip-on plate flanges under EN 1092-1 Type 01 and legacy DIN 2573 / DIN 2576 / DIN 2501) serve as the primary mechanical joining method for low-to-medium pressure utility pipelines across Berlin.
Understanding the structural mechanics, material grades, and tolerances required for heavy-duty industrial pipework in German engineering projects.
Plain flanges are flat circular rings featuring bolt holes around the perimeter and a central bore designed to slide over an adjacent pipe end. Unlike weld neck flanges that feature a tapered hub to absorb bending stresses, a plain flange is secured via fillet welds on both the interior and exterior of the flange hub face. This construction yields a cost-effective, space-saving joint ideal for municipal water distribution, building services (HVAC), low-pressure gas mains, and chemical process cooling circuits.
A critical E-E-A-T distinction evaluated by German TÜV inspection bodies is the manufacturing method of the raw blank. Lower-tier suppliers frequently flame-cut plain flanges directly from rolled steel plates. This results in end-grain exposure along the inner bore and outer perimeter, leaving the flange vulnerable to laminar tearing under cyclic pressure load.
At Shanxi Yuxin Casting & Forging Co., Ltd., our plain flanges are produced using open-die or closed-die rotary forging. This hot-forging process realigns the internal grain flow along the circumferential geometry of the flange ring, vastly superior in tensile yield strength, impact toughness at sub-zero temperatures (-40 °C), and resistance to stress corrosion cracking (SCC).
| Standard Reference | Flange Type Equivalent | Pressure Rating Range | Common Material Grades | Facing Types |
|---|---|---|---|---|
| EN 1092-1 | Type 01 (Plate Flange for Welding) | PN 2.5 / PN 6 / PN 10 / PN 16 / PN 25 / PN 40 | S235JR (1.0038), P250GH (1.0460), 1.4301, 1.4404 (316L) | Type A (Flat Face), Type B1 (Raised Face 2mm) |
| DIN Standard | DIN 2573 (PN6), DIN 2576 (PN10), DIN 2501/2502 | PN 6 to PN 40 | RSt 37-2, C22.8, 1.4571 (316Ti) | Form C, Form D (DIN 2526) |
| ASME B16.5 | Slip-On / Plate Equivalent | Class 150 / Class 300 | ASTM A105, A350 LF2, A182 F304/F316L | RF (Raised Face), FF (Flat Face) |
| JIS B2220 | SOP (Slip-On Plate) | 5K / 10K / 16K | SS400, SF440A, SUS304, SUS316 | FF, RF |
How Industry 4.0 automation, decarbonization mandates, and green hydrogen ready materials are transforming European pipe connection standards.
As Germany transitions toward a green hydrogen economy (H2-ready infrastructure in Brandenburg and Berlin), plain flanges require low-permeability austenitic stainless steel (1.4404/316L) and specialized surface finishes (Ra 3.2 – 6.3 µm) to eliminate micro-leakage of volatile hydrogen gas molecules under pressure.
Modern German project owners demand instant material compliance verification. YUXIN integrates laser-etched matrix QR codes on flange rims, enabling site engineers in Berlin to scan a flange and instantly retrieve mill test reports (MTC 3.1), chemical composition, and heat treatment charts via mobile device.
Addressing EU Scope 3 emissions regulations (CBAM), our production line incorporates high-efficiency electric induction heating furnaces powered by solar micro-grids, reducing the embodied carbon footprint per ton of forged plain flanges by up to 28% compared to traditional coal-fired plants.
Tailored plain flange configurations engineered to solve demanding operational conditions across municipal, commercial, and energy utility networks.
Berlin operates one of Europe's largest combined heat and power (CHP) systems. Our EN 1092-1 Type 01 PN16/PN25 plain flanges forged from normalized P250GH (1.0460) carbon steel deliver excellent weldability and high thermal resistance up to 450 °C, ensuring long-term maintenance-free operation in thermal distribution lines.
Water purification and sewage network expansion require corrosion-resistant components. We supply hot-dip galvanized (HDG) carbon steel plain flanges (EN 1092-1 Type 01 PN10/PN16) and stainless steel 1.4404 / AISI 316L flanges that withstand aggressive chemicals, biogenic sulfuric acid, and high moisture environments.
Data center cooling loops and commercial building HVAC piping require cost-effective, easily installed connections. Plain flanges under DIN 2576 PN10 offer quick bolt alignment and minimal space consumption inside compact mechanical rooms, lowering contractor labor installation costs by 20%.
For chemical storage hubs and process plants surrounding the Greater Berlin region, we manufacture raised face (Type B1) plain flanges featuring concentric serrated gasket faces (125-250 µin AARH) that prevent gasket blowout under pressure surges and vibration.
Rigorous quality control protocols compliant with European Pressure Equipment Directive (PED) and German TÜV audit frameworks.
Every plain flange destined for European installation meets the stringent requirements of PED 2014/68/EU Annex I, Paragraph 4.3. Certified by TÜV Rheinland / TÜV CERT, our manufacturing system guarantees that all material mechanical properties—including yield strength (ReH), tensile strength (Rm), elongation (A5), and Charpy V-notch impact toughness—exceed EU baseline criteria.
For pressure vessel and boiler piping applications across Germany, Shanxi Yuxin holds approval under AD 2000-W0. This certification confirms that our forging shop maintains verified heat treatment facilities (normalizing, solution annealing) and destructive/non-destructive testing (NDT) capability.
Every shipment to Berlin is accompanied by an original EN 10204 3.1 Mill Test Certificate detailing:
Why international engineering contractors and German stockists source directly from Shanxi Yuxin Casting & Forging Co., Ltd.
Founded in 1992 in Dingxiang County, Shanxi Province—globally recognized as the “Hometown of Forging in China”—Shanxi Yuxin Casting & Forging Co., Ltd. has evolved into a premier manufacturer of forged steel flanges. Operating a fully integrated 45,000 m² facility with an annual capacity exceeding 10,000 tons of finished flanges, we bridge the gap between high-volume manufacturing efficiency and European quality precision.
By eliminating intermediary trading company markups, direct partnership with our Shanxi factory offers Berlin importers, EPC contractors, and pipe stocking distributors a distinct competitive edge:
A structured framework for German procurement officers, project engineers, and supply chain managers.
We provide flexible shipping options including FCL/LCL ocean freight via Hamburg or Bremerhaven ports, combined with direct rail transport via the Eurasia China-Europe Railway Express (TIR direct to Berlin hub) for urgent project deliveries within 16–20 days transit time.
All plain flanges undergo anti-corrosion surface treatment (transparent yellow oil rust inhibitor, black rust-preventive paint, or electro-galvanizing). Bores are protected with plastic caps, and items are packed in ISPM-15 compliant fumigation-free plywood cases with waterproof plastic wrapping.
We offer transparent commercial frameworks including FOB, CIF, CFR, and DDP (Delivered Duty Paid) to Berlin warehouse facilities. Payment terms supported include L/C at sight, T/T, and deferred payment arrangements for long-term contracted distributors.
Explore our full line of custom expansion joint flanges, tube sheets, ring flanges, and specialty connection components engineered for worldwide export.
Detailed answers to critical engineering, regulatory, and purchasing questions regarding plain flange supply in Berlin and Europe.
An EN 1092-1 Type 01 plain flange (plate flange) is flat without a neck, sliding directly over the pipe wall and held in place by inner and outer fillet welds. It is designed for low-to-medium pressure utility pipelines (PN6 to PN40). In contrast, a Type 11 weld neck flange features a long tapered hub butt-welded to the pipe wall, distributing mechanical strain and making it suitable for extreme cyclic loads, high thermal stresses, and high pressure (up to PN400 / Class 2500).
Yes. Although EN 1092-1 has officially superseded older DIN standards across Europe, many existing industrial municipal networks in Berlin still specify DIN 2573 (PN6), DIN 2576 (PN10), DIN 2501, and DIN 2502. We maintain complete tooling dies and CNC routines for both EN 1092-1 Type 01 and legacy DIN specifications, ensuring exact dimensional match for maintenance and retrofits.
Every shipment includes an official EN 10204 3.1 Mill Test Certificate covering heat number traceability, full ladle chemical analysis, mechanical property test reports (Tensile, Yield, Elongation, Impact energy), hardness test results, heat treatment logs, non-destructive testing (UT/MT) reports, and commercial customs documentation (Certificate of Origin, Packing List, Commercial Invoice).
We supply plain flanges with anti-rust oil (transparent or light yellow varnish), black rust-preventive paint, hot-dip galvanizing (HDG per ISO 1461), electro-galvanizing, or epoxy resin powder coating based on specific project corrosion protection guidelines.
Standard size plain flanges (DN15 to DN600 / ½" to 24") held in forged blank stock ship within 7 to 15 days following final CNC machining and inspection. Custom non-standard sizes or special alloy forgings typically require 20 to 30 days. Rail transit via Eurasia Railway direct to Germany takes approximately 16–18 days.
Our quality management system operates under ISO 9001 and PED approvals. Custom drawing orders undergo CAD/CAM forging die simulation, first-article CMM dimensional inspection, 100% ultrasonic testing for internal voids, and spectral chemical analysis before batch machining release.
Get direct factory pricing, full EN 10204 3.1 material traceability, and dedicated engineering support for your pipeline procurement in Berlin and across Europe.
