Haihao Group Delivers 38″ ASME B16.48 Spectacle Blind Flange to Brazil
Haihao Group recently completed the production and shipment of a 38 inch ASME B16.48 spectacle blind flange for a customer in Brazil. The product was manufactured according to detailed client drawings and technical requirements, ensuring reliable sealing performance and dimensional accuracy for critical pipeline systems.
As a professional manufacturer of industrial flanges and pipeline components, Haihao Group continues to support global energy, petrochemical, and industrial projects with high-quality customized flange solutions.
Project Overview
| Product | Size | Pressure Class | Facing | Material | Standard |
| Spectacle Blind Flange | 38″ | 150# | RF | ASTM A105 | ASME B16.48 |
What Is an ASME B16.48 Spectacle Blind Flange?
A 38 inch ASME B16.48 spectacle blind flange is a specialized piping component used to isolate sections of a pipeline during maintenance, inspection, or shutdown operations.
The design combines:
- A solid blind section
- An open ring spacer section
- A connecting web
This structure allows operators to quickly switch between open-flow and fully isolated conditions without removing the entire flange assembly.
Advantages of Spectacle Blind Flanges
- Reliable pipeline isolation
- Improved operational safety
- Easy maintenance access
- Long service life
- Reduced downtime during inspection
The RF spectacle blind flange ASTM A105 supplied by Haihao Group was manufactured with strict dimensional tolerances to ensure compatibility with the customer’s pipeline system.
Haihao Group ASTM A105 RF 38 inch ASME B16.48 spectacle blind flanges
ASTM A105 Material for High Reliability
The flange material used in this project was ASTM A105 forged carbon steel, one of the most widely used materials for industrial flange manufacturing.
Key Benefits of ASTM A105
- Excellent mechanical strength
- Good weldability
- Stable performance under pressure
- Suitable for oil, gas, and industrial applications
- Cost-effective for medium-temperature service
The ASTM A105 spectacle blind flange provides dependable sealing performance and structural integrity in demanding operating environments.
Precision Manufacturing According to Customer Drawings
This project required production strictly according to the customer’s engineering drawings and specifications.
Haihao Group’s engineering and production teams carefully controlled:
- Outside diameter dimensions
- Raised face machining
- Bore accuracy
- Surface finish
- Thickness tolerances
- Alignment precision
The custom ASME B16.48 spectacle blind flange was fully inspected before shipment to ensure compliance with project requirements.
Strict Quality Inspection Before Delivery
To guarantee product quality, Haihao Group implemented comprehensive inspection procedures during production.
Inspection Items Included
- Raw material verification
- Dimensional inspection
- Surface quality examination
- Facing inspection
- Marking verification
- Visual testing
- Packing inspection
All inspection procedures were carried out according to international quality management standards.
Reliable Packaging for International Transportation
Because of the large size and weight of the 38 inch spectacle blind flange, extra protection measures were applied during packaging and loading.
Packaging Features
- Anti-corrosion protection
- Wooden case reinforcement
- Edge protection
- Surface protection for RF facing
- Export-standard packaging
These measures help prevent damage during long-distance sea transportation to Brazil.
Haihao Group Supports Global Pipeline Projects
Haihao Group manufactures a wide range of:
- Spectacle blind flanges
- Blind flanges
- Weld neck flanges
- Slip-on flanges
- Pipe fittings
- Steel pipes
- Customized forged components
Our products are widely exported to:
- South America
- Europe
- Middle East
- Southeast Asia
- Africa
With extensive export experience and strict quality control, Haihao Group continues to provide reliable piping solutions for global industrial projects.
Technical Highlights
| Project Item | Details |
| Destination | Brazil |
| Product Type | Spectacle Blind Flange |
| Size | 38 Inch |
| Pressure Rating | Class 150 |
| Material | ASTM A105 |
| Standard | ASME B16.48 |
| Facing Type | RF – Raised Face |
| Production Basis | Manufactured According to Drawings |
Contact Haihao Group for Custom Flange Solutions
If your project requires:
- 38 inch ASME B16.48 spectacle blind flange
- RF spectacle blind flange ASTM A105
- Custom forged flanges
- Large-diameter industrial flanges
- Pipeline isolation components
Haihao Group can provide professional manufacturing and export services tailored to your technical requirements.
Our engineering team is ready to support your project with customized pipeline solutions and fast quotation services.