Blind Cast Iron ANSI Flange
Cast Iron: The base material providing specific properties
ANSI: The standard specification defining dimensions and ratings
Blind Cast Iron ANSI Flange - Core Attributes
Primary Core Terms
- Blind: The fundamental function - completely closing pipe ends
- Cast Iron: The base material providing specific properties
- ANSI: The standard specification defining dimensions and ratings
Blind flanges have the following main characteristics:
Structural Characteristics
Flat Plate Design: No central through-hole, completely closed
Sealing Faces: Usually have various sealing forms such as raised face (RF), male-female face (MFM), tongue and groove face (TG), etc
Bolt Holes: Same number and specifications as the matching flange
Performance Characteristics
Good Sealing Performance:
Can completely block medium flow
High Strength:
Withstands the same pressure rating as flanges of the same specification
Removability:
Easy to install and disassemble, highly flexible
Installation Characteristics
- Directionality: Usually has front and back distinction
- Gasket Requirements: Requires gaskets matching the sealing face
- Bolt Torque: Needs to be tightened uniformly according to specified torque
Usage Characteristics
- Temporary Isolation: Can be used for temporary closure during pipeline maintenance
- Permanent Closure: Can also serve as permanent pipeline end closure
- Convenient Switching: Especially figure-8 blind flanges, easy to switch between blind and open positions
Safety Characteristics
- Leak Prevention: Effectively prevents leakage of hazardous media
- Easy Identification: Usually requires obvious identification and tagging
- Safe Operation: Needs to follow strict blind plate insertion and removal operation procedures
Blind Flange: Product Description & Advantages
Description: Solid plate flange (ASME B16.5/GB/T 9113/DIN 2527), DN10-DN600, PN10-PN40; carbon steel (A105/Q235), stainless steel (304/316) options.
Core Advantages:
Seamless sealing for pipeline shutdown/inspection
High pressure/temp resistance, structural stability
Precision drilling, easy flange connection
Corrosion-resistant (painting/passivation finish)
ISO 9001 certified, custom sizes available
Blind Flange - Technical Specifications
Product Parameter
|
Parameter |
Details |
|
Standards |
ASME B16.5, GB/T 9113, DIN 2527, EN 1092-1 |
|
Size Range |
DN10-DN600 (1/2"-24"), PN10-PN40, Class 150-Class 600 |
|
Material |
Carbon steel (A105/Q235), 304/316 stainless steel, alloy steel |
|
Surface Finish |
Painting, passivation, galvanized (per requirement) |
|
Pressure Rating |
Up to 100 bar (1450 psi) |
|
Temperature Range |
-20℃~+450℃ (per material) |
|
Certifications |
ISO 9001, CE, API (optional) |
|
Supply |
In-stock, bulk order supported, custom sizes available |
Blind Flange: Key Features & Applications
Core Features
- Solid one-piece structure, leak-tight pipeline sealing
- High pressure/temp resistance, structural durability
- Precision-drilled bolt holes, easy flange assembly
- Corrosion-resistant finishes (painting/passivation)
- Universal standard compliance, custom options
Typical Applications
Oil & gas, petrochemical pipelines (shutdown/inspection)
Power plants, chemical tanks, industrial systems
Water treatment, marine offshore platforms
Pipeline branching, equipment maintenance closures
Blind Flange - Key Details
Structure: One-piece solid plate, precision-drilled bolt holes (ASME B16.5/GB/T 9113).
Quality: ISO 9001 certified; material MTC provided; pressure/tightness tested.
Specs: DN10-DN600, PN10-PN40; A105/Q235 carbon steel, 304/316 stainless steel.
Finish: Painting/passivation/galvanized for corrosion resistance; smooth sealing face.
Advantage: Leak-proof, high structural strength, easy installation for pipeline shutdown.
Blind Flange - Production Highlights
Precision Craft: CNC cutting + drilling; ASME B16.5/GB/T 9113 standard compliance.
Quality Control: ISO 9001 certified; MTC per batch; pressure & tightness testing.
Material Assurance: Premium A105/Q235 carbon steel, 304/316 stainless steel; anti-corrosion treatment.
Capacity: Daily output 500+ pcs; fast lead time (10-15 days); custom sizes/thickness supported.
Blind Flange - Packaging & Shipping
- Protective Packing: Anti-rust oil + PE film + wooden crates; edge protectors for collision prevention.
- Bulk Option: ISPM 15 certified pallets, stretch film + steel strap fixed for stability.
- Custom Service: Neutral/branded packaging, moisture-proof coating for long storage.
- Shipping: Express/Air/Sea; full export docs (B/L, CO, MTC); on-time delivery guaranteed.
After-Sales Service Process
1：Customer feedback (provide order number, product photos/videos, problem description
01
2：After-sales team responds within 24 hours to verify the problem type
02
3：Quality/specification issues: Solution (replacement/exchange/refund) provided within 48 hours
03
4：Technical issues: Immediate guidance; special solution provided within 1-3 working days for complex problems
04
5：Implement the solution and track customer satisfaction
05
After-Sales Guarantee Commitments
1.Response Time: Quick response to customer demands within 24 hours without delay
2.Solution Rate: 100% problem-solving rate to protect customer rights and interests
3.Transparent Communication: Synchronize the processing progress throughout to keep customers informed of each step
4.Long-term Cooperation: Dedicated after-sales specialists for long-term cooperative customers to prioritize needs
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