Threaded Blind Flange
A[High-risk blocking scenario] --> B[Flammable and explosive medium pipeline]
A --> C[Pressure repair operation]
A --> D[Confined Space operation]
- Product Introduction
Products Description
A threaded blind flange is a type of blind flange that uses threaded connections to seal the ends of pipelines and withstand medium to high pressures. It features weld-free operation, easy installation, and excellent sealing performance.
Manufacturing Process
Raw Materials: A105, 304, and 316 forgings are used, and their composition and mechanical properties are tested.
Forging/Forming: High-temperature die forging increases the metal density, making the threaded connections more pressure-resistant.
Finishing: CNC precision machining of threads and sealing surfaces ensures thread accuracy meets ASME B1.20.1, and sealing surface roughness is controlled within Ra 3.2–6.3μm.
Inspection and Testing: Thread gauge inspection, dimensional inspection, material spectral analysis, and pressure testing are performed to ensure compliance with ASME B16.5/B16.47 standards.
Customizable Range
Sizes: 1/2"–24"
Pressure Rating: Class 150 / 300 / 600
Materials: A105, A350 LF2, 304, 316, 316L, 321
Thread Type: NPT, BSPT, BSPP (customizable to ASME/ISO/BS standards)
Surface Treatment: Rust-preventive oil, pickling, sandblasting, finish machining
Connection Method: Internal thread, various thread precision grades available upon request
Packaging and Transportation
Rust Prevention: All products are coated with rust-preventive oil and individually bagged to reduce oxidation during sea transport.
Structural Protection: Protective sleeves are added to threaded joints, and plastic protective films are added to sealing surfaces to prevent scratches.
Outer Carton Structure: Thick corrugated cardboard box + reinforced wooden crate, suitable for transporting heavy flanges.
Shipping Methods: Supports sea freight, air freight, rail freight, and express delivery.
FAQ
Q: What materials are available? What are the pressure ratings?
A: A105, 304, 316, LF2, etc., with pressure ratings ranging from Class 150 to 600.
Q: Can the thread type be customized?
A: Yes, NPT/BSPT/BSPP are supported, and non-standard threads can be machined according to drawings.
Q: Do you support customized sizes and shapes?
A: Yes, thread depth, sealing surface type, and flange thickness can all be customized.
Q: What is the MOQ?
A: Minimum order quantity is 50-100 pieces; larger quantities receive better pricing.
Q: How do you ensure consistent quality?
A: Full-process spectral analysis, dimensional inspection, thread gauge inspection, and pressure testing are conducted, and third-party inspection is supported.
Q: What is the lead time?
A: Standard specifications can be shipped within 7-15 days; large quantities require confirmation based on the production schedule.
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