ASME/ANSI Standard & Custom Engineered Non-Standard Industrial Flanges

Standards: ASME B16.5, ASME B16.47 (Series A & B), MSS SP-44, API 605.

Types: Weld Neck (WN), Slip-on (SO), Blind (BL), Socket Weld (SW), Threaded (TH), Lap Joint (LJ).

Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500.

Materials:

    • Stainless Steel: ASTM A182 F304/L, F316/L, F321.

    • Carbon Steel: ASTM A105, A350 LF2, A694.

    • Alloy Steel: ASTM A182 F1, F5, F9, F11, F22.

Size Range: 1/2″ to 120″ (DN15 – DN3000).

Production Description

The forged steel flanges are suitable for the connection of steel pipes conveying mediums such as steam, oil, air, and water. They are widely used in the oil gas Chemical industry and Shipbuilding.

Manufacturing Standards Referred

  • ASME B16.5: Dimension standard for steel pipe flanges and flanged fittings
  • ASME B16.47: Large diameter steel flanges NPS 26 to NPS 60
  • MSS-SP44: For steel pipeline flanges
  • API 605: For large diameter carbon steel flanges

Types of Forged Flanges

Industrial welded forged flanges come in many different types. Each species meets its special requirements. For example, long weld neck flanges are attached to the necks of the pipes.
There is also have weld neck flange

Specification

Industrial Steel Forged Flange
StandardASME/ANSI B 16.5ASME B 16.47ASME B 16.48GOST 12821GOST 12820GOST 33259EN 1092DINJISSABS/SANS 1123BS 4504
Size1/2″-24″26″-60″1/2″-24″DN10-DN1200DN10-DN1200DN10-DN2400DN10-DN2000DN10-DN2000DN10-DN1500DN10-DN600DN10-DN4000
PressureClass 150
300, 400
600, 900
and 2500
 Class 75
150, 300
400, 600
and 900
Class 150
300, 400
600, 900
and 2500
PN6, PN10
PN16, PN25
PN40, etc
PN6, PN10,
PN16, PN25
PN6, PN10,
PN16, PN25,
PN40, etc
PN6, PN10
PN16, PN25
PN40, etc
PN6, PN10,
PN16, PN25,
PN40, etc
5KG, 10KG
16KG, 20KG
30KG, 40KG
etc
1600/3
1600/4
Table D
Table E
PN 2.5
PN6, PN10
PN16, PN25
PN40, etc
MaterialCarbon steel: Steel 20#, A105, A105N, Q235, 16Mn, Q345, etc
Alloy steel: ASTM A182 F11, F22, LF2
Stainless steel: 304/L, 316/316L
Flange TypeWeld Neck Flange, Slip-on Flange, Socket Welding Flange, Plate Flange, Blind Flange, Lap Joint Flange,
Threaded Flange, Orifice Flange, Spectacle Flange, Stub End, Weld Neck Collar, Welding-on Collar
Sealing FaceRaised Face (RF), Flat Face(FF), Ring Joint Face(RTJ), Male Face-Female Face(SMF), Tongue Face & Groove Face
Surface TreatmentAnti-rust Oil, H.D.G., Black Painting, Yellow Painting, Red Painting, Etc
TechniqueCutting – Heat Treatment – Forging – Machining – Drilling – Painting
 CertificatesISO 9001, CE, GOST-R, CCS, EN 10204/3.1B, MTC, Radiography Test Report, Ultrasound Test Report, SGS and other third party Inspection Reports
PackagePallets, Plywood Case, etc
ApplicationPetroleum, Natural Gas, Water Disposal, Shipbuilding, Nuclear Energy, Chemical Engineering, Deckle, Electric Power

Surface Treatment

Welded Forged Flanges coated Surface Treatment

Welded Forged Flanges coated Specially coated

Production process

 

Industrial Forged flange Production process

 

Industrial Forged Flanges Key Applications:

 

1. Oil and Gas Industry:
Forged flanges are essential in oil and gas extraction, transportation, and refining processes. Their ability to withstand high pressure and temperature makes them suitable for pipelines, refineries, and offshore platforms.
2. Petrochemical and Chemical Plants:
These welded forged flanges are used to connect pipes and equipment handling corrosive chemicals in petrochemical and chemical processing plants. Materials like stainless steel and specialized alloys are often employed for their corrosion resistance.
3. Power Generation:
Forged flanges play a vital role in power plants, including nuclear, thermal, and hydroelectric facilities. They connect piping systems transporting steam, water, and other fluids under high pressure and temperature.
4. Water Treatment and Distribution:
They are used in water and wastewater treatment plants to ensure reliable fluid transport in pipelines and systems.
5. Shipbuilding and Marine Applications:
In marine environments, forged flanges provide durable and corrosion-resistant connections in pipelines on ships and submarines.
6. Food and Pharmaceutical Industries:
Where hygiene and corrosion resistance are critical, forged flanges, particularly those made of stainless steel, are used in processing equipment for handling sensitive liquids and gases.
7. HVAC Systems:
Forged flanges are also used in heating, ventilation, and air conditioning (HVAC) systems for reliable connections in piping networks.
8. Structural Applications:
In some cases, forged flanges are used in structural frameworks for added support and stability.

 

Why order forged Flanges in Bulk from RAYOUNG?

 

  • Custom Non-Standard Expertise:
    “Beyond standard dimensions, HB Steel excels in non-standard flange fabrication. Whether it’s unique bore diameters, special facing, or oversized diameters up to 5 meters, our in-house CNC machining center ensures ±0.5mm precision for your custom project requirements.”

  • Quality Assurance & Traceability:
    “Every flange undergoes rigorous testing, including Ultrasonic Testing (UT), Magnetic Particle Inspection (MPI), and PMI for material grade verification. Full MTC (Material Test Certificates) to EN 10204 3.1 are provided with every shipment, ensuring compliance for high-pressure applications.”

  • Distributor Support & Logistics:
    “We understand the needs of global stockists. With optimized production lead times and robust seaworthy packaging, we support private labeling and neutral marking for distributors worldwide.”

carbonsteel forged steelflange

 

Cooperate with Rayoung, you will enjoy the following benefits.

Rayoung–A leading Butt Weld pipe fittings, flanges and steel pipes supplier& factory in China.
We’re here to help with your industry pipe fittings and flange needs. Rayoung has been in the business of industrial pipe fittings since 1983, and we’re confident we can help you find a solution more quickly, affordably, and with greater expertise than the competition.

We’d love to learn more about your project today!

Pre-sale Service

Cooperation guidance Production process updates Documents of clearance

After-sale Service

1-year warranty time of the products. Any feedback will be replied to within 2 hours. 
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Free Sample

If you need samples in small sizes such as 1", 2", and only one or two pieces, samples are free.

Free Sample

You only need to pay for the courier cost. 
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Fast Quotation

The factory price list can be supplied within 1 day in working days. 

Factory Price

We are a factory of 38 years old, some items are in stock.
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Cerfifications

Our factory and products are approved by ISO 9001, CE, TUV, CCS and GOST-R.

Test & Inspection

Before delivery, the SGS inspection, Ultrasonic test and other inspections are acceptable. 
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Customers say:

Boran
Boran Turkey
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The flanges are exactly in line with our requirement technically and competitive commercially.
Faris
FarisOman
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We tested the elbows and flanges, their performance is very nice. We will make the new purchase plan for the warehouse.
Hung
HungVietnam
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like the product.. quick response and also nice people.
Anton
AntonRussia
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This product is exactly in line with our requirement technically and competitive commercially.
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