Weldolet Branch Fittings Supplied to UAE for Sour Service Piping Systems

Haihao Group has successfully completed the delivery of a batch of forged weldolet branch fittings for a customer in the United Arab Emirates. The products were supplied for use in oil and gas piping systems, where strict compliance with NACE MR0175 / ISO 15156 and international material standards is required.

The shipment includes Alloy 825 and ASTM A182 F53 weldolets, manufactured in accordance with MSS SP-97 and supplied in butt-weld (BW) configuration to ensure reliable performance under corrosive and low-temperature service conditions.

MSS SP-97 ASTM B 564 UNSN08825 and ASTM A182 Gr. F53 weldolets

Alloy 825 Weldolet for Corrosion-Resistant Applications

Several weldolet fittings were produced from ASTM B564 UNS N08825 (Alloy 825), a nickel-based alloy known for its excellent resistance to chloride stress corrosion cracking, pitting, and acidic environments.

Supplied specifications include:

• Size: 6″ × 2″, SCH 40
• Size: 2″ × 3/4″, SCH 40
• Type: Forged Weldolet, Butt Weld
• Standard: MSS SP-97
• Material: ASTM B564 UNS N08825
• Compliance: NACE MR0175 / ISO 15156

These Alloy 825 weldolet branch fittings are widely used in sour gas, offshore, and chemical processing pipelines, where long-term corrosion resistance is critical.

ASTM A182 Gr. F53 Weldolet for High Strength and Low Temperature Service

The order also includes duplex stainless steel weldolets manufactured from ASTM A182 Grade F53 (UNS S32750).

Key features of the supplied F53 weldolet:

• Size: 3″ × 1″, SCH 80
• Type: Forged BW Weldolet
• Standard: MSS SP-97
• Material: ASTM A182 Gr. F53
• Compliance: NACE MR0175 / ISO 15156

The material fully meets intergranular corrosion test Method E, maintains a ferrite content of 35–55%, and satisfies low-temperature impact requirements down to –46°C, making it suitable for demanding offshore and oilfield environments.

Manufacturing and Quality Assurance

All weldolet fittings were hot forged, machined, and inspected in accordance with applicable standards. Dimensional checks, visual inspection, and material verification were carried out before shipment to ensure full compliance with project specifications.

Haihao Group’s experience in supplying NACE-compliant branch fittings for Middle East projects enables us to deliver reliable solutions for complex piping systems.