High-Quality Loose Flanged Pipe Flange for Versatile Applications

• Customization: Available
• Standard: ANSI, DIN, GB
• Type: Welding Flange
• 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

LOOSE SET OF FLANGING FLANGE(ATIVITIES FLANGE)
Nominal Diameter:10-2000mm
NominalPressure:0.25~42.0MPa
Product material:
304,304L,321,316,316L,(Needle type valve series)

LOOSE LAP-JOINT FLANGE (SWIVEL FLANGE) - ANSI/DIN STANDARDS
Flexible Piping Solutions for Industrial Maintenance & Valve Connections

Product Features & Applications

1. Design Flexibility:
   • Rotatable hub allows angular adjustment during installation, reducing stress on pipelines.
   • Ideal for needle valve series and instrumentation connections requiring frequent disassembly.
2. Key Uses:
   • Petrochemical, power, and HVAC systems where access to valves/pumps is critical.
   • Low-pressure to high-pressure transitions (0.25-42.0MPa) with corrosion-resistant materials.
3. Material Benefits:
   • 316L SS: Chloride-resistant for marine/offshore applications.
   • High-temp alloys (Inconel 625, Alloy 800): Suitable for reformer furnaces or sour gas environments.

Technical Specifications

 

Parameter	Details
Nominal Diameter	DN10-DN2000 (1/2"-80")
Pressure Rating	PN6-PN420 (0.25-42.0MPa)
Material Grades	SS: 304/304L, 316/316L, 321; CS: A105; High-Temp: Inconel 625, Alloy 800H
Flange Type	Lap-Joint (LJ), Threaded (NPT), or Socket Weld (SW)
Face Finish	Stock/Smooth (125-250μin Ra) or Serrated (for gasket retention)

Quality Compliance

• Standards:
  • Dimensional: ANSI B16.5, DIN 2632-3, JIS B2220.
  • Material: ASTM A182 (SS), ASTM A105 (CS), ASTM B564 (Nickel Alloys).
  • Testing:
    • NDT: Magnetic Particle (MT) or Liquid Penetrant (PT) inspection.
    • Hydrostatic Test: 1.5× rated pressure; pneumatic testing optional.
• Certifications:
  • ISO 9001:2015, API 6A (for wellhead applications).
  • Third-Party Approval: ABS, DNV-GL, or TÜV on request.

Product Advantages

1. Installation Efficiency:
   • Swivel design simplifies alignment with misaligned pipes, reducing weld-neck flange costs.
2. Custom Options:
   • Non-standard bore sizes for throttling valves.
   • Special coatings: PTFE lining for chemical resistance or Zinc plating for marine use.
3. Global Support:
   • Multilingual documentation (English, Spanish, Arabic).
   • 24/7 technical guidance for torque values (ASME PCC-1 compliant).

Packaging & Logistics

• Packaging: Fumigated wooden crates with moisture barriers.
• Lead Time: 10-20 days (stock items); 30-40 days (custom alloy).
• Exports: EN 10204 3.1 MTR, COC, and ATA Carnet available.

Keywords: Lap-Joint Flange, 316L Stainless Steel Flange, High-Temp Alloy Swivel Flange, PN420 Loose Flange, Needle Valve Flange.