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Products
- VALVES
- FITTINGS
- FORGED FLANGE
- SS WELDED PIPE&TUBE
- SS SMLS TUBE
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SS SMLS PIPE
- SS SMLS PIPE 2507 ASTM A790
- SS SMLS PIPE 2205 ASTM A790
- SS SMLS PIPE S31803 ASTM A790
- SS SMLS PIPE 904L ASTM A240
- SS SMLS PIPE TP321 ASTM A312
- SS SMLS PIPE TP310S ASTM A312
- SS SMLS PIPE TP316Ti ASTM A312
- SS SMLS PIPE TP316L ASTM A312
- SS SMLS PIPE TP316 ASTM A312
- SS SMLS PIPE TP304L ASTM A312
- SS SMLS PIPE TP304 ASTM A312
China Stainless Steel Forged Flanges Suppliers | Quality Factory Manufacturing to ASTM, ASME, DIN Standards
Key Features
Material Superiority
Molybdenum-enriched grades (e.g., F316L with 2.1% Mo) and duplex stainless steels combat chloride-induced pitting, acidic erosion, and stress corrosion cracking, validated by EN 10204 3.1-certified chemistry reports.
Pressure Mastery
Rated from Class 150 (PN6) to Class 2500 (PN420), with CNC-machined RF/RTJ/FF faces achieving ≤3.2μm surface roughness for ASME B16.5-compliant sealing under cyclic 6,500 psi loads.
Thermal Adaptability
Stable performance from cryogenic LNG applications (-268°C) to refinery steam lines (650°C), resisting deformation in thermal shock scenarios.
Product Specification
- Material: ASTM A182 grades (F304/F304L/F316L/F321), duplex steels (2205/2507), and carbon steel A105, with full traceability to EN 10204 3.1 standards.
- Size & Pressure: ANSI (CLASS 150–CLASS 2500) BS (1/2"–48"), DIN (DN10–DN2000), and JIS (5K–30K) specifications with RF/RTJ/FF face types for universal compatibility.
- Types: Slip-On, Welding Neck, Blind, Socket Weld, Threaded, Lap Joint, Orifice, Plate, Ring Joint
- Marking: All Flanges are marked as follows: Specifications, Standard, Grade, Heat NO. (or as per customers’ requirement)
- Packing: With Plastic Caps And Plastic Bubles For Each Piece, and Then Pack Into Wooden Boxes
Frequently Asked Questions
What steel grades are available for these forged flanges?
Our forged flanges are manufactured in a wide range of steel grades, including ASTM A182 stainless steel (F304, F304L, F316L, F321), duplex steels (2205 and 2507), and carbon steel A105. All materials are delivered with full chemical and mechanical traceability verified by EN 10204 3.1 certification.
What pressure ratings and standards do you comply with?
We supply flanges compliant with international standards, including ANSI/ASME (Class 150 to Class 2500), BS (1/2" to 48"), DIN (DN10 to DN2000), and JIS (5K to 30K). They are available in Raised Face (RF), Ring Type Joint (RTJ), and Flat Face (FF) configurations.
What types of forged flanges can I order?
Our comprehensive range includes Slip-On, Welding Neck, Blind, Socket Weld, Threaded, Lap Joint, Orifice, Plate, and Ring Joint flanges to suit diverse piping system layouts.
How do molybdenum-enriched grades improve corrosion resistance?
Grades enriched with Molybdenum (such as F316L containing 2.1% Mo) significantly enhance resistance to pitting and crevice corrosion in chloride-rich environments, acidic conditions, and industries prone to stress corrosion cracking.
What temperature ranges can these flanges withstand?
These flanges exhibit excellent thermal adaptability and high structural stability, performing reliably from cryogenic applications like LNG (-268°C) up to high-temperature refinery steam lines (650°C).
How are the flanges marked and packed for shipping?
Each flange is permanently marked with its specification, standard, material grade, and Heat Number (Heat NO.) for complete quality assurance. For protection, each piece is fitted with plastic caps and bubble wrap, then securely packed in sturdy wooden boxes.