ASTM A182 F321 Flange Weld Neck Flat Face (FF) Ring Joint (RTJ) Raised Face (RF) Flanges Wn So Bl Thread Flange

• Customization: Available
• Standard: ANSI, DIN, GB, JIS, GOST, BSW
• Type: Welding Flange
• Model NO.: 0010005
• Material: Carbon Steel
• Structure: Flanges
• Connection: Flanged
• Sealing Surface: RF
• Manufacturing Way: Forging
• Pressure: Pn6/10/16/25/40/63
• Certificate: ISO9001 / API / PED
• Coating: Oil, Galvanized, Black Coated
• Process: Forging+Machining+Heating Treatment
• Test: Ut/PT/Mt
• Surface: Oil Gas Water Industrial
• Transport Package: Plywood Case/ Pallet
• Specification: 1" to 48" (DN15--DN1400)
• Origin: China
• HS Code: 7307
• Production Capacity: 3000000t/Year
• Package Size: 50.00cm * 50.00cm * 50.00cm
• Package Gross Weight: 50.000kg

Product Description

Flange                                               

Flanges are essential components used to connect pipes, valves, pumps, and other equipment in piping systems. They provide a secure and reliable sealing connection, allowing easy assembly, disassembly, and maintenance. Flanges are widely used in industries such as oil & gas, petrochemical, power generation, shipbuilding, water treatment, and mechanical engineering.

Our flanges are available in various types including weld neck, slip-on, blind, socket weld, lap joint, and threaded flanges. We offer production in accordance with international standards such as ASME/ANSI, DIN, EN, BS, JIS, and GB.

.

Key Features & Benefits

Applications

Manufacturing Process

Available in carbon steel, stainless steel, and alloy steel
Sizes range from 1/2" to 60" (DN15–DN1500)
Pressure ratings: Class 150 – Class 2500 / PN6 – PN400
Surface finish: Rust-proof coating, machined sealing face
Optional: Heat treatment, NDT, 3.1/3.2 certificates, special coatings

Oil & Gas Pipelines
Petrochemical and Refining Plants
Power Generation (Thermal, Nuclear, and Renewable)
Shipbuilding and Offshore Engineering
Water Treatment and Sewage Systems
Pharmaceutical, Food, and Chemical Industries
Construction and HVAC Systems

Cutting – Cut raw steel to size
Forging – Shape under high heat and pressure
Heat Treatment – Improve strength and toughness
Machining – CNC finish for precise dimensions
Drilling – Create bolt holes
Surface Treatment – Apply rust protection
Inspection & Packaging – Quality check and secure packing

Product Description
Product Name	Industrial Pipe Flange / Forged Steel Flange / Stainless Steel Flange
Flange Types	Weld Neck (WN), Slip-On (SO), Blind (BL), Socket Weld (SW), Lap Joint (LJ), Threaded (TH)
Size Range	DN15 – DN1500 / 1/2” – 60”
Pressure Ratings	Class 150 / 300 / 600 / 900 / 1500 / 2500 (ASME); PN6 – PN400 (DIN)
Facing Type	RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint), Tongue & Groove, Male & Female
Material Grades	- Carbon Steel: ASTM A105, A350 LF2, A694 F52/F60/F65

Why Choose Us?

Xiamen Bluesea Piping Systems Co., Ltd (BPS), established in 2009, is a professional forging manufacturer with over 15 years of experience. We specialize in producing a wide range of forged components including forged rings, shafts, cylinders, discs, and both standard and non-standard flanges, using carbon steel, stainless steel, duplex steel, and alloy steel. Our factory covers 8000 m² and is equipped with complete production lines including free forging, ring rolling, machining, heat treatment, and painting, with an annual capacity of 8000 tons. We have cooperated with Fortune Global 500 companies and earned a solid reputation in international markets such as South America, Europe, and Asia. Certified by ISO9000, PED, and TUV AD2000-W0, we guarantee stable quality, on-time delivery, and professional service with full documentation and inspection support including third-party inspection.

Packaging 

Delivery Options:

Anti-rust oil applied to sealing surfaces
Flanges separated with plastic film or foam
Packed in fumigation-free wooden cases or pallets, reinforced with steel strips
Customized labeling and markings available upon request
Optional: Carton + pallet for small flanges, or bulk packing for large-volume orders

Incoterms: EXW, FOB, CFR, CIF, DDP (as per customer request)
Delivery Time:

Standard orders: 15–30 days after order confirmation
Urgent/stock items: 3–7 days depending on availability
Packaging: Secure export-grade wooden cases, pallets, or as per buyer's requirements

FAQ

Q: Are your MIC forged rings comparable to Western brands?
A: Yes! We use CNC machines and comply with international standards (e.g., API 6A for oil & gas).

Q: Can you provide material certificates?
A: Yes, Mill Test Reports (MTR) with traceable heat numbers.

Q: How to ensure quality before shipment?
A: Third-party inspections (SGS/BV)