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We are an ISO-certified manufacturer specializing in high-precision, heavy-duty forged carbon steel flanges. Engineered to sustain continuous high-stress, high-pressure, and extreme thermal environments, our product line fully complies with ASME/ANSI, EN, DIN, and JIS standards.
The SABS Standard Steel Flange is used to connect pipelines in industrial fluid systems, ensuring secure, leak-free, and stable joint performance under structural pressure.
DN200 Forged Carbon Steel Flange is for medium to heavy-duty pipeline systems requiring reliable sealing and structural stability.
DN50 Carbon Steel Forged Flange is designed for secure and reliable connections in medium and high-pressure piping systems.
Carbon Steel Forged Plate Flange is a forged steel piping flange used for industrial pipeline connection systems.
Carbon Steel Slip On Flange is manufactured using a high-quality carbon steel integral forging process.
A105 Forged Steel Flanges provide secure connection, absolute sealing, and flow regulation. These products are widely utilized across heavy industrial pipeline projects, including petrochemical & gas, power generation, shipbuilding, water works, and valve manufacturing.
Q235 carbon steel flanges are pipe fittings made of high-quality Q235 low-carbon steel.
A threaded carbon steel flange is a pipe fitting that connects directly to a threaded pipe via its internal threads, allowing for installation without welding.
Carbon Steel A234 WPB Flange is an industrial flange that is custom-manufactured according to project technical specifications.
JIS Standard Flanges are pipe fittings designed and manufactured in strict accordance with Japanese industrial standards such as JIS B2220 and JIS B2238.
We manufacture a complete range of carbon steel flanges according to ASME, EN, DIN, and JIS standards for various pressure ratings and industrial applications.
|
Flange Type |
Key Features |
Typical Applications |
|
Weld Neck Flange |
High strength, excellent stress distribution |
Oil & Gas, Power Plants |
|
Slip On Flange |
Easy installation, economical |
Water Treatment, General Piping |
|
Blind Flange |
Seals pipe ends and openings |
Pipeline Isolation, Pressure Vessels |
|
Socket Weld Flange |
Strong connection for small pipes |
High-Pressure Systems |
|
Threaded Flange |
No welding required |
Low-Pressure Applications |
|
Lap Joint Flange |
Easy alignment and maintenance |
Chemical Processing |
|
Long Weld Neck Flange |
Reinforced hub design |
Pressure Vessels |
|
Orifice Flange |
Supports flow measurement |
Metering Systems |
|
Spectacle Blind Flange |
Quick line isolation |
Process Plants |
|
Reducing Flange |
Connects different pipe sizes |
Industrial Piping Systems |
Available Standards: ASME B16.5, ASME B16.47, EN 1092-1, DIN, JIS
Available Materials: ASTM A105, ASTM A350 LF2, ASTM A694 F52/F60/F65/F70
Available Facing Types: RF, FF, RTJ
Selecting the proper material grade is critical for ensuring long-term performance and operational safety.
ASTM A105
The most widely used forged carbon steel flange material for ambient and elevated temperature service.
Key Benefits:
ASTM A350 LF2
Designed for low-temperature applications requiring high toughness and impact resistance.
Typical Applications:
ASTM A694 F52, F60, F65, F70
High-strength carbon steel grades developed for transmission and pipeline systems.
Advantages:
Quality Assurance & Inspection
Raw Material Verification
Every incoming carbon steel billet undergoes Optical Emission Spectrometer (OES) analysis before cutting to prevent heat mixing.
Permanent Heat Number Stamping
For absolute accountability, each flange is deeply hard-stamped with our logo, material grade, pressure rating, size, standard, and a unique Heat Number tied straight to the MTC.
Destructive & NDT Testing Lab
Fully equipped for in-house tensile testing, Brinell/Vickers hardness checks, sub-zero Charpy V-notch impact testing, and on-demand Ultrasonic (UT) or Magnetic Particle (MPI) inspection.
We provide full in-house forging and machining solutions for industrial projects.
Advanced Forging Capability
Up to 102-inch (DN2600)
Heavy-wall custom forgings
Precision CNC machining for sealing surfaces
Custom Engineering Support
We support:
Custom bolt circle design
Non-standard flange dimensions
Special hub length modification
Drawing-based manufacturing (STEP / DWG / PDF)
Fast Engineering Response
Technical confirmation within 24 hours for most RFQ drawings.
International Certifications
Fully certified under PED 2014/68/EU Directive for European pressure equipment and audited to ISO 9001:2015 quality standards.
Independent Inspection
We operate with total transparency and regularly welcome on-site third-party inspectors from SGS, TÜV Rheinland, Intertek, and Bureau Veritas.
Industrial Sea Freight Packaging
All parts are degreased and coated with heavy-duty black paint, yellow varnish, or hot-dip galvanizing. Sealing faces are shielded with snap-on plastic caps, wrapped in moisture-proof film, and packed into ISPM-15 fumigation-free plywood boxes or rugged steel pallets.
To ensure safe international delivery, we use industrial-grade packaging systems:
ISPM-15 fumigation-free plywood crates
Steel pallets for heavy-duty orders
Anti-rust coating (black paint / varnish / galvanizing)
Plastic cap protection for sealing faces
Moisture-proof wrapping for sea freight transport
Based on the years of the technical precipitation and production experience, we provide hundreds of (easy to use, reliable, low price) products for the whole world wide clients and projects.
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admin@yongxingflange.com
+86-18931763322