Explore our primary inventory of heavy-duty, CNC-machined forged flanges engineered for high-pressure, thermal-cyclic, and corrosive piping networks globally.
Navigating the transition between legacy Deutsches Institut für Normung (DIN) standards and harmonized EN 1092-1 European frameworks while optimizing procurement budgets for heavy industrial projects.
For decades, standardizations such as DIN 2527 (Blind Flanges), DIN 2576 (Slip-On Flanges), and DIN 2633 / DIN 2635 (Weld Neck Flanges) formed the global backbone of mechanical engineering across Europe, Central Asia, and Eastern Europe (popularly queried as Фланцы DIN). Even with the modern enforcement of EN 1092-1, legacy DIN designations remain deeply embedded in engineering bills of materials (BOMs), maintenance retrofits, and municipal pipeline specifications.
Engineers and EPC procurement officers seeking "Discount DIN Flanges" require more than just reduced prices—they demand strict compliance with dimensional tolerances, grain-flow structural integrity, and verified material chemistries matching P250GH, C22.8, or 1.4404 stainless steel.
The global flange market is affected by middle-tier markup layers, logistics bottlenecks, and variable raw billet sourcing. Shanxi Yuxin Casting & Forging Co., Ltd., situated in Dingxiang County—acknowledged as the official “Hometown of Forging in China”—eliminates trade margins by operating a direct-from-mill forging ecosystem.
By providing high-tonnage open-die and closed-die forging alongside precision CNC turning in one integrated plant, we deliver substantial cost savings (often 15% to 30% below European distribution warehouses) without compromising mechanical toughness, pressure retainment, or quality documentation.
Establishing Trust through Audited Quality Systems, In-House Metallurgical Control, and 33 Years of Dedicated Valve & Flange Production.
Established in 1992 in the Zhuangli Enclave Industrial Zone, Shanxi YUXIN has grown from a regional forging plant to an international exporter shipping over 10,000 metric tons of forged pipe components annually to more than 40 countries.
Our facility holds ISO 9001:2015 accreditation certified by TÜV CERT, Pressure Equipment Directive (PED 2014/68/EU) conformity, AD 2000-Merkblatt W0 / TRD 100 approval, and Special Equipment Manufacturing Licensing (TS Certification).
From initial billet heating and hydraulic press forging to normalizing heat treatment, CNC flange face scoring, and final marking, all operations occur under one roof with EN 10204 3.1 / 3.2 material certification.
Detailed dimensional mapping, sealing face classifications, and material grade alignment for global piping system engineers.
| DIN Standard | EN 1092-1 Equivalent | Flange Description | Nominal Pressure (PN) | Standard Sealing Face | Primary Material Grades |
|---|---|---|---|---|---|
| DIN 2573 / 2576 | Type 01 | Plate Flange for Welding (Slip-On Flat) | PN 6 to PN 40 | Form A / Form B (Flat Face / Raised Face) | C22.8, P250GH, S235JR, A105 |
| DIN 2631 to 2638 | Type 11 | Weld Neck Flange (Vorschweißflansche) | PN 6 to PN 160 | Form C, D, E, F (Tongue & Groove) | P245GH, P280GH, 1.4404, 1.4301 |
| DIN 2527 | Type 05 | Blind Flange (Blindflansche) | PN 6 to PN 100 | Raised Face (Form B1) | P250GH, ASTM A105, Stainless 316L |
| DIN 2566 | Type 12 / 13 | Threaded Flange with Neck (Gewindeflansche) | PN 10 to PN 40 | Form C (DIN 2526) / Smooth Face | C22.8, Carbon Steel, Stainless Steel |
| DIN 2641 / 2642 | Type 02 + 32 | Loose Flange with Weld-on Collar (Lap Joint) | PN 10 to PN 40 | Flat Face for Ring Collar | Carbon Steel Ring / Stainless Collar |
| DIN 2543 to 2545 | Type 01 / 11 | Cast / Forged Steel Pipe Flanges | PN 16 to PN 40 | RF / Male-Female Face | 16Mo3, 13CrMo4-5, Alloy Steel |
Unlike lower-grade cast components prone to shrinkage cavities and internal micro-porosity, Shanxi YUXIN DIN flanges are manufactured via high-energy mechanical forging. The process forces raw steel billets through directional plastic deformation, refining grain size down to ASTM Grade 7 or finer.
All carbon steel flanges undergo full-body normalizing heat treatment at 890°C–920°C followed by controlled air cooling, eliminating residual forging stress and guaranteeing impact toughness tested down to -40°C for arctic or low-temperature chemical media.
Custom-engineered DIN flange configurations deployed across mission-critical energy, chemical, and heavy marine infrastructure worldwide.
Engineered for sour gas transmission (H2S service) complying with NACE MR0175 / ISO 15156. Heavy-wall weld neck flanges (DIN 2635/2636) prevent hydrogen-induced cracking (HIC) and stress corrosion cracking under high cyclic thermal loads.
Forged from high-temperature alloy steel grades such as 16Mo3, 13CrMo4-5, and A182 F11/F22. These DIN flanges withstand superheated steam up to 550°C in power station boiler manifold header systems.
Large-diameter flat and blind flanges (up to DN3000) finished with anti-corrosive black bitumen, hot-dip galvanizing, or fusion-bonded epoxy coatings (FBE) to guarantee a 30-year maintenance-free operational life.
How Shanxi YUXIN integrates automated ring rolling, digital thermal simulation, and automated non-destructive evaluation (NDE).
Direct-reading optical emission spectrometry ensures zero-defect raw material heat chemistry prior to forging.
Computerized radial-axial ring rolling machines forge dense seamless circular flanges up to 3000 mm diameter.
High-speed CNC vertical lathes achieve exact sealing face phonographic grooves (125-250 AARH serration).
Automated Ultrasonic (UT) and Magnetic Particle Testing (MT) eliminate volumetric internal defects.
All DIN and EN flanges produced in our Dingxiang plant ship with official documentation satisfying international quality inspection agencies (TÜV, DNV, Lloyd's Register, SGS).
ISO 9001:2015
PED 2014/68/EU
AD 2000-W0
High-Tech Enterprise
How Shanxi YUXIN customizes product finishing, marking, and logistics packaging to comply with regional customs directives and jobsite standards.
While European EPCs operate primarily under EN 1092-1, legacy plant refurbishments in Germany, Austria, and the Netherlands frequently specify original DIN 2501 flange dimensions. YUXIN provides Dual-Stamped DIN/EN flanges accompanied by EN 10204 3.1 certification issued directly in German/English to ensure seamless inspection by TÜV and Dekra authorities.
In Russia, Kazakhstan, and Uzbekistan, engineering drawings often require cross-referencing between GOST 12820-80 / 12821-80 and DIN 2576 / DIN 2633 standards. Shanxi YUXIN provides full documentation, GOST-R / EAC compliance declarations, and specialized anti-freezing protective coatings suitable for Siberian and Central Asian pipeline installations.
Addressing essential technical queries regarding pressure ratings, material certifications, dimensional tolerances, and export shipping logistics.
Explore our expanded range of custom slip-on, socket weld, blind, tube sheet, and ring flanges engineered for specialized industrial piping systems.
Our engineering desk reviews DIN, EN 1092-1, ASME, and custom drawing inquiries within 24 hours. Connect directly with Shanxi YUXIN's export specialists.
