ASME B16.48 a516 gr70 1500lb Spectacle Figure 8 Blank Blind Flange

ASME B16.48 Spectacle Blank Flange Datasheet

Item	Specification
Standard	ASME B16.48
Type	Spectacle Blind (Spectacle Blank) Flange
Size Range	1/2″ – 24″ (or as per custom requirement)
Pressure Class	150, 300, 400, 600, 900, 1500, 2500 (ANSI classes)
Material Options	Carbon Steel, Stainless Steel (304, 316), Alloy Steel, Duplex Stainless Steel
Thickness	As per ASME B16.48 standards for specified size and pressure class
Face Type	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Surface Finish	Machined, Polished (for specific applications)
Temperature Range	Based on material specifications (up to 815°C for high-grade alloys)
Testing and Certification	Hydrostatic testing, Ultrasonic testing, Hardness test, Material traceability

Advantages of Spectacle Blind Flanges

Enhanced Safety: Spectacle blinds allow for the secure blocking or isolation of sections of piping systems, enhancing safety during maintenance or repairs.
Clear Visual Identification: The unique “figure-8” shape, with one open side and one closed side, makes it easy to identify whether a line is open or blocked.
Easy Operation: Operators can quickly rotate the blank and open the side as needed for flow control or shutdown.
Cost-Effective Isolation: They provide a simple, affordable method of isolating a pipeline without the need for additional valves or complex equipment.
Reliability in Extreme Conditions: Made of materials suitable for high-pressure, high-temperature environments, making them reliable even under demanding industrial conditions.

Applications of Spectacle Blind Flanges

Oil and Gas Pipelines: Used for blocking sections of oil, gas, or chemical pipelines for maintenance or testing.
Petrochemical and Chemical Plants: Essential in isolating toxic or hazardous materials during repairs or inspections.
Power Generation: Used in power plants, especially in high-temperature and high-pressure piping systems, to control steam and other utility lines.
Refineries and Process Plants: To prevent the flow of gases and liquids when sections of the plant require shutdown or safety isolation.
Pharmaceutical and Food Processing: Employed in systems where clean separation is essential to avoid contamination during maintenance.
Marine and Offshore: Common in marine industries, especially for pipelines that transport fuel or water to prevent leaks.

Material

Nickel Alloy: ASTM/ASME S/B366 UNS N08020, N04400, N06600, N06625, N08800, N08810, N08825, N10276,N10665,N10675
Super Stainless Steel: ASTM/ASME S/A182 F44, F904L, F317L
Stainles steel: ASTM/ASME S/A182 F304, F304L, F304H, F316, F316L, F321, F321H, F347H
Duplex Steel: ASTM A182 F51, F53, F55
Alloy Steel: ASTM/ASME S/ A182 F11, F12, F22, F5, F9, F91
Carbon Steel: ASTM/ASME S/A105, ASTM/ASME S/A350 LF2, ASTM/ASME S/A694/A694M, F42, F52, F56, F60, F65, F70….ASTM/ASME S/A350LF2, ASTM/ASME S/A694/A694M, F42, F52, F56, F60, F65, F70….

Test

Chemical Component Analysis, Mechanical Properties, Metallurgical Analysis, Impact Testing, Hardness testing , Ferrite Testing,
Intergranular corrosion testing, X-ray Inspection (RT), PMI, PT, UT, HIC & SSC test, etc. or as your requirment

Service:

* Provide 7 * 24-hour service. Feel free to contact us by phone, email, instant messaging and social media.

* After receiving your inquiry, reply within 8 hours, and provide the price plan within 24 hours.

* Review and monitor project details and progress at no cost by a professional team of sales, engineers

and QC personnel.

* In the cost, production, inspection, packaging, delivery and other aspects to provide a full range of intimate services.

* Provides professional support and assurance at all stages of sales.

Abundant stock and prompt delivery.
Reasonable for whole packages and processes.
10 years' QC team service & sales management API& ASTM trained engineers.
More than 150 customers spread worldwide. (Petrofac, G.S Engineer, Fluor, Hyundai Heavy industry, Kuwait National Oil,Petrobras, PDVSA, PetroEcuador, SHELL, etc.)

1. What's your terms of payment?

30%T/T as the upfront deposit, 70% before delivery, We will show you the photos and package before you pay the balance.

2. What's the terms of delivery?

EXW, FOB, CFR, CIF

3. What's the terms of packing?

Generally,we pack our goods in bundles or coils with rods or belts, we could also pack the goods as the customers' requirement.

4. What's your delivery time?

For stocks, we could transport the goods to loading port within 7 work days after we received the deposit.For production period, it usually takes about 15 days to 30 days after we received the deposit.

5. Could you produce according to the samples?

Yes, we can customer-made by your samples or technique drawings, we can build the mold and fixtures.

6. How could you guarantee your products quality?

Each piece of products is manufactured by certified workshops, inspected by us piece by piece according to national QA/QC standard. We also could issue the warranty to customer to guarantee the quality.