Haihao Group Supplies ASTM A350 LF2 Class 1 Flanged Outlet (WELDOFLANGE) to Kazakhstan Client

Haihao Group has successfully completed the production and shipment of WELDOFLANGE flanged outlet pipe branch fittings for a long-term partner in Kazakhstan. These components were manufactured in strict accordance with ASTM A350 LF2 Class 1, ASME B16.5, and sour-service requirements under NACE MR0175/ISO 15156.

This order highlights Haihao Group’s ability to supply low-temperature carbon steel flanged outlets engineered for demanding oil & gas environments.

Product Overview

Flanged Outlet (WELDOFLANGE) – ASTM A350 LF2 Class 1

• Product type: WELDOFLANGE (flanged outlet branch fitting)

• Run pipe size: 150 mm

• Branch size: 25 mm (1 inch)

• Overall length: 150 mm

• Pressure rating: Class 150 (flange), 6000 psi (pipe)

• Schedule (run pipe): STD

• Schedule (branch): S-160

• Material: Low Temperature Carbon Steel ASTM A350 Grade LF2 Class 1

• Flange standard: ASME B16.5

• Facing: Raised Face (RF)

• Surface finish: RA 125–250 µin

• Service: Sour service, compliant with NACE MR0175 / ISO 15156

These LF2 flanged outlets offer excellent toughness at low temperatures and strong resistance against sulfide stress cracking—essential for upstream oil & gas facilities in harsh climates such as Kazakhstan.

Engineered for Sour-Service Pipeline Systems

The supplied WELDOFLANGE products are designed for:

• High-integrity branch connections

• Enhanced mechanical strength for high-pressure lines

• Safe operation under H₂S-containing (sour) environments

• Low-temperature conditions specific to Kazakhstan oil fields

Each flanged outlet is machined with strict dimensional control to ensure reliable welding, precise fit-up, and long-term pipeline performance.

Quality Control & Compliance

Haihao Group followed a multi-stage inspection plan, including:

• PMI testing for LF2 chemical composition

• Verification of ASME B16.5 flange facing finish (RA 125–250 µin)

• Dimensional inspection of the WELDOFLANGE profile

• Sour-service compliance checks according to NACE MR0175

• Full documentation package available upon request

These rigorous procedures ensure every ASTM A350 LF2 flanged outlet meets international standards for safety and reliability.

Shipment to Kazakhstan

The WELDOFLANGE fittings have now been securely packed and shipped to the client in Kazakhstan. Haihao Group will continue to support their project with reliable supply, responsive communication, and technical assistance throughout the service life of the pipeline system.