Haihao Group Supplies ASTM A694 F65 Blind Flanges for UAE High Pressure Pipeline Project

Haihao Group has recently completed the manufacturing and shipment of a batch of ASTM A694 F65 blind flanges for a customer in the United Arab Emirates. The order includes 18 inch and 20 inch blind flanges rated at 2500# pressure class, manufactured according to customer drawings and project requirements.

Designed for high-pressure pipeline systems, these blind flanges are used to securely close pipeline ends, pressure vessels, or equipment connections during operation, maintenance, and future expansion. The selected ASTM A694 F65 material provides high yield strength and excellent mechanical performance, making it suitable for demanding oil and gas applications.

Project Overview of ASTM A694 F65 Blind Flanges

The UAE customer’s order required heavy-duty blind flanges manufactured from forged carbon steel with strict dimensional control. According to the supplied specifications, Haihao Group produced three pieces of blind flanges, including two different sizes.

The product details are listed below:

Manufacturing Features of ASTM A694 F65 Blind Flanges

The supplied ASTM A694 F65 blind flanges were manufactured based on customer drawings to ensure compatibility with the project pipeline system.

ASTM A694 F65 is a high-strength forged carbon steel specification commonly used for pressure-containing flange applications. Compared with standard carbon steel flange materials, F65 offers higher strength characteristics, making it suitable for high-pressure transmission pipelines.

During production, Haihao Group focused on the following key requirements:

• Forged body structure for improved mechanical reliability
• Accurate flange dimensions according to customer drawings
• Controlled machining quality for sealing surfaces
• Material traceability throughout manufacturing
• Final inspection before international shipment

For a 2500# blind flange, dimensional accuracy and material performance are especially important because the flange must maintain reliable sealing under extreme operating pressure conditions.

ASTM A694 F65 blind flanges manufactured by Haihao Group

Applications of High Pressure Blind Flanges

The delivered F65 blind flanges are mainly used in high-pressure pipeline systems where temporary or permanent closure of piping sections is required.

Typical applications include:

• Oil and gas transmission pipelines
• Offshore engineering projects
• Petrochemical facilities
• Refinery piping systems
• High-pressure industrial pipelines

Blind flanges allow operators to isolate sections of pipelines safely during maintenance, testing, or system modification. For high-pressure applications, selecting the correct material and pressure rating is essential to ensure long-term service reliability.

Quality Control for UAE Customer Order

Before shipment, Haihao Group carried out strict quality checks according to project requirements. The inspection process included:

• Material verification
• Dimensional inspection
• Machining quality check
• Surface condition examination
• Documentation review

All ASTM A694 F65 blind flanges were prepared according to customer specifications and supplied with quality documents required for project traceability.

Haihao Group – Reliable Supplier of High Pressure Flanges

With more than 40 years of manufacturing experience, Haihao Group specializes in producing forged flanges, butt weld fittings, steel pipes, and customized pipeline components for global customers.

From standard flange products to special designs based on customer drawings, Haihao Group provides solutions for oil and gas, energy, chemical, and industrial pipeline projects.

This successful delivery of 2500# ASTM A694 F65 blind flanges to the UAE demonstrates Haihao Group’s capability in manufacturing high-pressure forged flange products with consistent quality and reliable project support.

For your next pipeline project, contact Haihao Group for professional flange solutions and technical assistance.