ASTM A350 LF2 Flanges and ASME B16.48 Spectacle Blind Delivered to UAE Low-Temperature Pipeline Project

Haihao Group has successfully completed another export order for a customer in the United Arab Emirates, supplying a batch of forged flanges and a spectacle blind designed for low-temperature service. Manufactured in accordance with ASME B16.5 and ASME B16.48, the products are intended for pipeline systems operating under demanding pressure and cold-service conditions.

The order features ASTM A350 LF2 flange products with Class 600 pressure ratings, complemented by an ASTM A516 Grade 70 spectacle blind for pipeline isolation. Each item was produced under strict manufacturing procedures to ensure reliable performance in critical industrial applications.

Order Overview

The shipment includes the following products:

Product	Size	Rating	Standard	Material
Weld Neck Flange RF	3/4″ SCH 80	Class 600	ASME B16.5	ASTM A350 Gr. LF2 Class 1
Weld Neck Flange RTJ	3/4″ SCH 80	Class 600	ASME B16.5	ASTM A350 Gr. LF2 Class 1
Weld Neck Flange RF	2″ SCH 80	Class 600	ASME B16.5	ASTM A350 Gr. LF2 Class 1
Spectacle Blind RF	3/4″	Class 600	ASME B16.48	ASTM A516 Gr.70

The combination of RF and RTJ sealing configurations allows the customer to match different sealing requirements within the same piping system while maintaining compliance with international standards.

Manufactured for Reliable Low-Temperature Performance

Every ASTM A350 LF2 flange in this shipment was manufactured specifically for low-temperature service. The products underwent controlled heat treatment and process inspections to maintain stable mechanical properties throughout production.

To satisfy the project specification, the flanges meet:

• -46°C low-temperature impact performance
• Metallographic structure meeting Grade 7
• Stable mechanical properties after heat treatment
• Dimensional compliance with ASME B16.5
• Pressure rating of Class 600

These characteristics make the ASTM A350 LF2 flange an excellent choice for LNG terminals, natural gas transmission, petrochemical facilities, offshore platforms, and other cold-service applications.

Strict Manufacturing and Inspection Procedures

Haihao Group follows a comprehensive quality management system from raw material procurement through final shipment.

For this order, production included:

• Certified raw material inspection
• Precision forging and machining
• Controlled heat treatment
• Metallographic examination (Grade 7)
• Low-temperature mechanical property verification
• Dimensional inspection according to ASME standards
• Final visual inspection and identification marking

Every ASTM A350 LF2 flange was inspected before packing to ensure consistency, traceability, and full compliance with customer specifications.

Reliable Isolation Components for Critical Pipelines

Besides forged flanges, the shipment also includes an ASME B16.48 RF spectacle blind manufactured from ASTM A516 Grade 70.

Spectacle blinds are widely used to isolate pipeline sections during maintenance, inspection, and plant shutdowns. Precision machining of the sealing face ensures dependable sealing performance while simplifying installation and operation.

Global Supply Capability from Haihao Group

Haihao Group supplies a complete range of industrial piping products for customers across the Middle East, Europe, Southeast Asia, and other international markets. Our manufacturing capabilities include:

• Forged flanges
• Butt weld pipe fittings
• Forged fittings
• Spectacle blinds
• Steel pipes
• Branch connections
• Custom-engineered piping components

Products are manufactured according to ASME, ASTM, EN, MSS, DIN, JIS, GOST, and other international standards to support projects in oil & gas, petrochemical, power generation, LNG, and offshore industries.

If your project requires ASTM A350 LF2 flange products or customized low-temperature piping components, Haihao Group can provide professional engineering support, strict quality control, and dependable global delivery.

Contact Haihao Group today to discuss your project requirements and receive a competitive quotation.