Specially selected forged flange products tailored to meet ASME, EN, DIN, and JIS standards across Vietnam's heavy industrial pipeline installations.
As Southeast Asia’s fastest-growing industrial manufacturing and energy hub, Vietnam is currently undergoing an unprecedented modernization of its heavy industrial infrastructure. Strategic regional nodes including the Nghi Son Refinery in Thanh Hoa, Long Son Petrochemical Complex in Ba Ria-Vung Tau, major LNG terminals in Thi Vai and Son My, alongside expanding shipbuilding corridors in Hai Phong and Da Nang, demand strict compliance with international pressure piping standards.
Vietnam's refining and chemical sector requires Class 150 to Class 2500 forged weld neck and RTJ flanges capable of enduring high thermal stress, corrosive hydrogen sulfide environments, and cyclic pressure swings.
With Vietnam's PDP8 (Power Development Plan VIII) shifting focus toward gas-to-power and offshore renewables, cryogenic duplex steel and alloy flanges certified to EN 10204 3.1/3.2 are mandatory for zero-leak operations.
Located in Dingxiang, Shanxi — "The Hometown of Forging in China" — Shanxi Yuxin Casting & Forging Co., Ltd. delivers direct ocean freight to Cat Lai Port (HCMC) and Hai Phong within 7–12 shipping days, cutting EPC procurement lead times dramatically.
In high-stakes industrial projects across Vietnam, procurement delays or material non-conformance can lead to severe operational downtime. Sourcing direct from YUXIN guarantees that every forged flange is produced in-house under audited ISO 9001 and PED 2014/68/EU protocols, eliminating trading intermediary risk and ensuring complete material traceability from raw steel billet to final CNC machining.
Vietnam's coastal tropical climate presents intense atmospheric salinity and humidity. Sourcing the proper metallurgical grade and protective coating system is vital for preventing pitting, stress corrosion cracking, and joint failures in offshore and onshore fluid systems.
| Flange Standard | Pressure Class / PN | Nominal Size Range | Applicable Steel Grades | Key Vietnam Industry Target |
|---|---|---|---|---|
| ASME B16.5 | Class 150 – Class 2500 | ½" – 24" (DN15 – DN600) | ASTM A105, A350 LF2, A182 F304/F304L, F316/F316L, F51 | Oil & Gas Upstream, Offshore Platforms, Refineries |
| ASME B16.47 Series A/B | Class 75 – Class 900 | 26" – 120" (DN650 – DN3000) | ASTM A105, A182 F11/F22, A350 LF2 | Large Bore Storage Tanks, Utility Headers, Pipeline Mainlines |
| EN 1092-1 | PN 6 – PN 400 | DN15 – DN3000 | P245GH, P280GH, 1.4301, 1.4404, 1.4462 | Chemical Processing Plants, Municipal Water Treatment |
| DIN Standards | PN 6 – PN 160 | DN10 – DN2000 | C22.8, RST37-2, 1.4571 (316Ti) | European OEM Machinery, Power Plant Utility Lines |
| JIS B2220 | 5K – 30K | 10A – 1500A | SS400, SF440A, SUS304, SUS316 | Shipbuilding (Hai Phong Yards), Japanese FDI Facilities |
For hydrogen-sulfide rich environments in natural gas refining, YUXIN provides NACE MR0175 / ISO 15156 compliant carbon and stainless steel flanges with controlled hardness testing (< 22 HRC).
To resist monsoon humidity during extended site storage in Vietnam, flanges are available with yellow varnish, anti-rust oil, hot-dip galvanizing (HDG), or heavy-duty fusion-bonded epoxy (FBE) finishes.
Flange faces feature precise phonographic / concentric serration finishes (AARH 125–250 Ra) ensuring leak-free seating for spiral wound gaskets under extreme pressure cycling.
Every industrial sector in Vietnam presents distinct operating challenges. YUXIN’s engineering department offers targeted flange configurations and custom forging capabilities tailored for regional project specifications.
Operating in the Nam Con Son and Cuu Long basins demands extreme corrosion resistance and structural integrity under cyclic wave load. YUXIN supplies Class 900 to Class 2500 Ring Type Joint (RTJ) Weld Neck Flanges forged from ASTM A182 F51 / F53 Duplex Stainless Steel, backed by 100% Ultrasonic (UT) and Magnetic Particle (MT) inspection.
Vietnam’s major shipbuilding clusters in Hai Phong, Nam Dinh, and Da Nang require JIS and DIN standard marine pipe flanges. We manufacture slip-on, flat plate, and lap joint flanges with stub ends engineered for engine cooling, ballast, and fuel delivery lines compliant with international classification societies.
High-temperature steam headers and chemical synthesis loops require alloy steel flanges capable of resisting thermal creep. YUXIN provides ASTM A182 F11 and F22 chrome-moly flanges normalized and tempered to maintain mechanical yield strength at continuous temperatures exceeding 500°C.
Founded in 1992, Shanxi Yuxin Casting & Forging Co., Ltd. operates a vertically integrated 10,000-ton capacity manufacturing mill in Dingxiang, China. Controlling every process in-house guarantees that heat numbers stamped on your flanges match the physical metal in your facility.
Every shipment to Vietnam includes an EN 10204 3.1 Mill Test Certificate detailing chemical ladle analysis, tensile and yield strength, elongation, impact values at sub-zero temperatures, and heat treatment charts. EN 10204 3.2 third-party inspection (TÜV, SGS, BV, Lloyd's) is standard upon request.
From initial steel billet casting verification to hot die forging, computer-controlled normalizing and tempering furnaces, stamping, CNC facing, precision drilling, and export packaging — zero sub-contracting ensures uncompromised quality.
Assessed by TÜV CERT, YUXIN holds ISO 9001:2015 certification, PED 2014/68/EU approval, AD 2000-Merkblatt W0 qualification, VdTÜV 350/399-3 material approvals, and Special Equipment Manufacturing Licences.
As Vietnam transitions toward greener power production and high-efficiency industrial processes, YUXIN is pioneering advanced forging methodologies to meet the stringent demands of hydrogen-blended gas networks, ultra-low temperature LNG storage, and offshore wind tower installations.
Custom forged flanges with refined microstructures and low carbon equivalent (CE) formulas engineered to minimize hydrogen embrittlement in clean energy pipelines.
Austenitic stainless steels (A182 F304L/F316L) subjected to liquid nitrogen Charpy V-notch impact testing to ensure zero-ductile-to-brittle transition for LNG receiving terminals.
Seamless rolled rings and heavy flange blanks for offshore wind turbine tower foundations, heat exchanger tube sheets, and large pressure vessel shells.
Explore our complete range of standard and non-standard forged components available for rapid export to major industrial centers in Vietnam.
Expert insights addressing shipping logistics, certification, custom drawing engineering, and compliance requirements for buyers in Hanoi, Ho Chi Minh City, Hai Phong, and Da Nang.
YUXIN manufactures forged flanges per ASME B16.5, ASME B16.47 (Series A & B), EN 1092-1, DIN, JIS B2220, BS 4504, and GOST standards. We cover pressure ratings from Class 150 to Class 2500 (ANSI) and PN6 to PN400 (EN/DIN), spanning nominal sizes from ½" to 120" (DN15 to DN3000). Custom drawing forgings and non-standard rings up to 3,000 mm diameter are routinely produced.
Every order ships with an EN 10204 3.1 Mill Test Certificate (MTC) detailing heat number traceability, chemical composition, mechanical test results (tensile, yield, elongation, hardness), Charpy V-notch impact values, and heat treatment conditions. Third-party inspection certificates (EN 10204 3.2) witnessed by Lloyd’s Register, TÜV, Bureau Veritas, or SGS are provided upon request.
Standard forged blanks stocked in our warehouse ship within 7 to 15 days after final machining. Custom forgings or special alloys require 20 to 35 days depending on material procurement and heat treatment cycles. Ocean freight transit from Tianjin/Qingdao ports to Cat Lai Port (Ho Chi Minh City) or Hai Phong Port takes approximately 7 to 12 days.
All machined flange faces are coated with high-grade anti-rust oils, transparent varnishes, or black rust-inhibitive paint. Flange faces are fitted with plastic protective end caps or hardwood covers. Deliveries are packed in seaworthy, fumigation-free ISPM-15 compliant plywood cases or reinforced steel pallets, wrapped in vapor corrosion inhibitor (VCI) shrink wrap.
Yes. Our in-house engineering team utilizes AutoCAD and SolidWorks to process client DWG/PDF drawings or sample parts. We develop forging dies, calculate raw billet weights, and verify tolerance compliance (including TEMA layouts for tube sheets) before initiating production.
We provide full OEM marking services. Flanges can be die-stamped with your specified trademark, material grade, size, schedule, pressure rating, standard, and heat number per ASME B16.5 or EN 1092-1 requirements, alongside custom color coding and barcode labeling.
