Haihao Group supplies WN Compact Flange with IX Seal Ring Compliant with BS EN ISO 27509

Haihao Group continues to deliver advanced piping solutions tailored for high-pressure, high-performance industrial applications. Our latest product offering is the 6″ XXS Weld Neck Compact Flange featuring an IX seal ring, manufactured to ASTM A694 Grade F65 and fully compliant with BS EN ISO 27509 standards.

Product Overview

Type: Weld Neck (WN) Compact Flange

Size: 6 inch

Wall Thickness: XXS (Double Extra Strong)

Pressure Rating: 2500# (ANSI Class 2500)

Seal Type: IX Seal Ring Groove (as per ISO 27509 for Compact Flange Systems)

Material: ASTM A694 Gr. F65

Standard: BS EN ISO 27509

Key Features & Benefits

High-Pressure Capability: Designed for Class 2500 pressure rating, this flange is engineered for use in ultra-high-pressure environments such as subsea pipelines, offshore drilling, and critical oil and gas facilities.

Compact Design: The compact flange design reduces weight and overall dimensions while maintaining superior mechanical integrity, helping reduce installation space and overall system cost.

IX Seal Ring Compatibility: The flange uses an IX-type metal-to-metal seal ring groove, ensuring a robust, leak-proof connection ideal for critical service conditions, as specified in ISO 27509 for Compact Flange Systems (CFS).

ASTM A694 F65 Material: Known for its high strength and excellent toughness, F65 material is well-suited for high-yield applications and severe service conditions. It guarantees optimal performance under cyclic loading and high-pressure operation.

Precision Machining & Inspection: All machining is conducted under tight tolerance control with full traceability. Final inspection includes dimensional checks, hardness testing, material verification, and NDT procedures as required.

Applications

The 6″ XXS WN Compact Flange with IX Seal Ring is ideal for:

• Subsea oil and gas pipelines
• Offshore platform installations
• High-pressure process piping systems
• LNG facilities and petrochemical plants

Compact Flange System (CFS) connections requiring ISO 27509 compliance

Standards Compliance

This flange is manufactured in accordance with:

ASTM A694 / A694M – Standard Specification for Carbon and Alloy Steel Forgings for Pipe Flanges and Other Piping Components

BS EN ISO 27509 – Petroleum and natural gas industries – Compact Flanged Connections

ASME B16.5 & B16.47 (Reference for pressure classes)

Why Choose Haihao Group?

With over 40 years of manufacturing experience, Haihao Group is a global leader in producing high-spec forged flanges and custom piping components. Our facilities are equipped with advanced CNC machining, forging, and inspection systems, and our quality assurance process ensures that each product meets the strictest international standards.

Need a high-performance flange for extreme service conditions?

Contact Haihao Group today for technical specifications, drawings, and pricing on our 6″ XXS WN compact flange with IX Seal Ring – your reliable solution for high-integrity connections. Email:sales@haihaogroup.com