Haihao Group Supplies ASME B16.48 Spectacle Blinds to Singapore Client
Haihao Group has completed a new shipment of ASME B16.48 spectacle blinds for a long-term customer in Singapore. The order includes a full range of sizes from 1 inch to 4 inches, covering 150#, 300#, and 600# pressure ratings. These spectacle blind flanges are manufactured in accordance with strict international specifications to meet the client’s requirements for pipeline isolation, maintenance safety, and long-term service reliability.
The supplied products cover two major material categories:
- Carbon Steel SA/A516 Gr 70N with black coating
- Stainless Steel SA/A240 TP316/316L for corrosion-resistant service conditions
Each item is produced with a Flat Face (FF) sealing surface and fully complies with ASME B16.48—the standard governing line blinds used in piping systems for positive isolation.
Figure-8 blind flange manufactured by Haihao Group for Singapore project
Product Scope Delivered to Singapore
Carbon Steel Spectacle Blinds (SA/A516 Gr 70N, Black Coated)
- Sizes: 2″, 3″, 4″
- Pressure classes: 150#, 300#, 600#
- Sealing face: FF
- Standard: ASME B16.48
- Surface: Black coating for rust prevention
Stainless Steel Spectacle Blinds (SA/A240 TP316/316L)
- Sizes: 1″, 2″
- Pressure classes: 150#, 300#, 600#
- Sealing face: FF
- Standard: ASME B16.48
This combination of carbon steel and stainless steel spectacle blinds ensures full compatibility with the client’s mixed-material pipeline system, delivering enhanced integrity and operational flexibility.
High-Quality Manufacturing for Critical Isolation Applications
Spectacle blinds—also known as figure-8 blinds—are essential components for pipeline isolation, especially in high-risk environments such as chemical plants, refineries, marine facilities, and offshore systems. Haihao Group manufactures each piece using controlled forging, accurate machining, and strict dimensional inspection to guarantee sealing performance under demanding conditions.
Our production process ensures:
- Precise thickness and diameter tolerance
- Smooth sealing surfaces for FF flanges
- Reliable material traceability
- Compliance with ASME B16.48 requirements
Stainless steel TP316/316L pieces offer superior resistance to corrosion, chloride environments, and seawater exposure—ideal for Singapore’s coastal and offshore applications.
Why Customers Choose Haihao Group
- 40+ years of piping component manufacturing experience
- Full range of spectacle blinds, spacers, and spades
- Strict quality control and EN 10204 inspection documentation
- Fast delivery for global customers
Haihao Group remains committed to supporting customers with reliable piping products that meet international project requirements.