Premium Flange Cover for Industrial Pipelines and Equipment

• Customization: Available
• Standard: ANSI, DIN, GB
• Type: Welding Flange
• Material: Stainless Steel
• Structure: Flanges
• Connection: Cover
• 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

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

FLANGE COVER - ANSI/ASME STANDARDS
Reliable Pipe Termination Solutions for Industrial Applications

Product Features & Applications

1. Primary Use:
   • Sealing pipeline/equipment openings during maintenance, testing, or system isolation.
   • Compatible with needle valves for flow control systems (e.g., throttling applications in oil/gas pipelines).
2. Key Benefits:
   • Leak-tight sealing under extreme conditions (0.25-42.0MPa, -196°C to +815°C).
   • Material flexibility for corrosive (316L SS), high-temp (Alloy 800H), or cost-sensitive (carbon steel) environments.
3. Industries Served:
   • Power generation, petrochemical, HVAC, and marine for blanking pump/compressor nozzles or valve outlets.

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
Face Type	Flat Face (FF), Raised Face (RF), or Ring Joint (RTJ)
Finish Options	Pickled, polished (180-600 grit), or epoxy-coated

Quality Compliance

• Standards:
  • Dimensional: ANSI B16.5, ASME B16.47 (Series A/B), MSS SP-44.
  • Material: ASTM A182 (SS), ASTM A105 (CS), ASTM B564 (Nickel Alloys).
  • Testing:
    • NDT: 100% PT/MT inspection; ultrasonic testing (UT) for critical services.
    • Pressure Testing: Hydrostatic to 1.5x PN rating; pneumatic test optional.
• Certifications:
  • ISO 9001:2015, PED 2014/68/EU, AD2000-Merkblatt W0.
  • Third-Party Approval: Lloyd's, BV, or TÜV on request.

Product Advantages

1. Material Expertise:
   • 321 SS: Titanium-stabilized for intergranular corrosion resistance at 425-815°C.
   • Alloy 800H: Ideal for sour gas or reformer furnace applications.
2. Custom Solutions:
   • Non-standard bore sizes (e.g., reduced bore for instrumentation).
   • Special coatings (e.g., Xylan® for low-friction in valve stems).
3. Global Support:
   • Multilingual documentation (English, Spanish, Russian).
   • 24/7 technical assistance for bolt torque calculations (ASME PCC-1).

Packaging & Logistics

• Packaging: Vacuum-sealed in plywood crates with desiccant bags.
• Lead Time: 5-15 days (stock items); 30-45 days (custom alloys/sizes).
• Exports: COC, EN 10204 3.1 MTR, and ATA Carnet available.

Ideal for Blocking Off Valves, Filters, or Heat Exchangers!
Contact us for a free material selection guide or competitive pricing.

Keywords: ANSI B16.5 Blind Flange, 316L SS Flange Cover, High-Temp Alloy Flange, PN420 Blind Flange, Needle Valve Flange.