Haihao Group Exports Spectacle Blind Flanges and Spade & Spacer Sets to Indonesia
Haihao Group recently completed the production and shipment of a batch of spectacle blind flanges and spade & spacer sets for a customer in Indonesia. The products are manufactured in accordance with ASME B16.48 and meet the technical requirements of NORSOK L-001, ensuring high reliability for critical industrial pipeline systems.
This order includes several sizes and pressure ratings of spectacle blind flanges, ranging from 2 inches to 8 inches with pressure classes from CL150 to CL2500. The materials used include ASTM A516 Grade 70 carbon steel and ASTM A240 S31803 duplex stainless steel, both widely used in demanding oil, gas, and petrochemical environments.
Product Overview of the Shipment
The Indonesian order mainly consists of spectacle blind flanges and spade & spacer assemblies, which are essential components used for pipeline isolation and maintenance operations.
Spectacle Blind Flanges
The spectacle blind flanges supplied in this shipment are manufactured according to ASME B16.48 and include both flat face (FF) and ring type joint (RTJ) configurations.
Key specifications include:
- Sizes: 0.75″, 2″, 3″, 6″, and 8″
- Pressure ratings: CL150, CL300, CL900, CL1500, and CL2500
- Materials: ASTM A516 Gr.70 carbon steel and ASTM A240 S31803 duplex stainless steel
- Surface treatment: black paint protection
The thickness of the spectacle blind flanges ranges from 7 mm to 65 mm, depending on the pressure class and design requirements. These products are widely used to block or allow flow in pipelines during system maintenance or safety isolation procedures.
ASME B16.48 ASTM A516 Gr.70 Spectacle Blind Flange
Spade and Spacer Sets
In addition to the spectacle blind flanges, the order also includes spade & spacer assemblies, which provide flexible pipeline isolation solutions. These components allow operators to quickly switch between an open pipeline condition and a fully isolated state.
Key specifications include:
- Size: 12 inches
- Pressure classes: CL900 and CL2500
- Material: ASTM A516 Gr.70 carbon steel
- Standard: ASME B16.48
The spade and spacer components are manufactured with strict dimensional tolerances to ensure proper alignment with pipeline flanges.
ASME B16.48 ASTM A240 S31803 Spade Flange
Compliance with NORSOK and International Standards
All products in this order are manufactured in accordance with NORSOK L-001 requirements, which are widely used in offshore and oil & gas projects. This ensures that the spectacle blind flanges meet strict engineering and safety standards for demanding operating environments.
The materials used in this project also meet international mechanical performance requirements. For example:
- ASTM A350 LF2 CL1 components are capable of meeting low-temperature impact requirements at −46°C (27J/20J).
- ASTM A694 F52 materials meet −46°C impact requirements of 41J/33J, making them suitable for cold climate pipeline systems.
These material properties ensure that the spectacle blind flanges maintain strength and toughness even in low-temperature environments.
ASME B16.48 ASTM A240 S31803 Spacer Flange
Applications of Spectacle Blind Flanges
Because of their ability to isolate pipelines quickly and safely, spectacle blind flanges are widely used in many industries, including:
- Oil and gas pipelines
- Offshore platforms
- Petrochemical plants
- Refinery processing systems
- Power generation facilities
The use of spectacle blind flanges allows maintenance teams to safely shut off sections of piping without removing the entire pipeline system.
Haihao Group – Trusted Manufacturer of Industrial Flanges
Haihao Group has extensive experience in producing spectacle blind flanges, pipeline flanges, and other steel piping components for international customers. With advanced manufacturing facilities and strict quality control systems, the company supplies products to clients in Asia, Europe, the Middle East, and South America.
By combining international standards, reliable materials, and professional export services, Haihao Group continues to deliver high-quality spectacle blind flanges for global industrial projects.