Premium American Standard Flat Welding Flanges for Industrial Use

• Customization: Available
• Standard: ANSI, DIN, GB
• Type: Welding Flange
• Model NO.: AMERICAN STANDARD
• Material: Stainless Steel
• Structure: Flanges
• Connection: Welding
• Sealing Surface: RF
• Manufacturing Way: Forging
• Lead Time: 10-20 Days (Stock Items); 30-40 Days (Custom Alloy
• Transport Package: Carton, Wooden Case
• Specification: 1/2′′to 48′′
• Trademark: ShangBaoLuo
• Origin: Jiangsu, China
• HS Code: 73079100
• Production Capacity: 20000 Tons Per Year

Product Description

AMERICAN STANDARD WITH NECK FLATWELDING FLANGES
Nominal Diameter:10-2000mm
Nominal Pressure:0.25~42.0MPa
Product material:304,304L,321,316,316L

AMERICAN STANDARD WELD NECK FLATWELDING FLANGES (ANSI B16.5)
Engineered for Reliable Piping Connections in Demanding Applications

Product Features & Applications

1. Versatile Sealing Performance:
   • Integral neck design provides enhanced strength for high-cycle fatigue resistance in process piping.
   • Suitable for moderate to high pressure/temperature systems (0.25-42.0MPa) in oil & gas, chemical processing, and marine industries.
2. Premium Material Options:
   • Austenitic Stainless Steel: 304/304L (general corrosion resistance), 316/316L (marine/chloride environments), 321 (high-temp + oxidation resistance).
   • Custom Alloys Available: Duplex 2205, Alloy 20 (for sour gas/sulfuric acid service).
3. Compatibility:
   • Matches RF, FF, or RTJ gasket types for valves, pumps, and pressure vessels.
   • Meets ANSI B16.5, ASME B16.47, and MSS SP-44 dimensional standards.

Technical Specifications

 

Parameter	Details
Nominal Diameter	DN10-DN2000 (1/2"-80")
Pressure Rating	PN6-PN420 (0.25-42.0MPa)
Connection Type	Weld Neck (WN) with flat-face (FF) or raised-face (RF)
Dimensional Tolerance	±0.5mm (machined), ±1.0mm (cast)
Coating Options	Anti-rust oil, epoxy, or galvanizing (custom)

Quality Standards

• Material Compliance:
  • SS: ASTM A182 (F304L, F316L), CS: ASTM A105 (on request).
  • NDT Testing: 100% liquid penetrant (PT) + magnetic particle (MT) inspection.
  • Pressure Testing: Hydrostatic to 1.5x rated pressure; helium leak detection available.
• Certifications:
  • ISO 9001:2015, PED 2014/68/EU, AD2000-Merkblatt W0.
  • Third-Party Inspection: ABS, DNV, or SGS approval on request.

Product Advantages

1. Structural Integrity:
   • Forged construction (Class 300+) ensures 25% higher tensile strength than cast alternatives.
   • 321 SS ideal for 800-1500°F (425-815°C) applications with carbon stabilization to prevent carbide precipitation.
2. Custom Configurations:
   • Non-standard bore sizes (e.g., reduced port for throttling applications).
   • Special facing (e.g., male/female, tongue/groove) for equipment retrofits.
3. Global Support:
   • Multilingual documentation (English, Spanish, Mandarin).
   • 24/7 technical guidance for welding procedures (ASME Sec. IX).

Packaging & Logistics

• Packaging: Vacuum-sealed in fumigated wooden crates with moisture barriers.
• Lead Time: 10-20 days (stock items); 30-40 days (custom alloy).
• Exports: COC, Mill Test Reports, and Embassy Legalization provided.

Keywords: ANSI B16.5 Weld Neck Flange, 316L Stainless Steel Flange, 321 SS Flange, PN420 High-Pressure Flange, ASME B16.47 Flange.