Haihao Group is proud to announce the successful production and delivery of ASME B16.9 90° long radius (LR) elbows, manufactured from ASTM B366 Grade WPNCMC.S, for a valued client in the United Arab Emirates. These elbows are specifically engineered to meet the strict requirements of sour service environments, ensuring full compliance with NACE MR0175 / ISO 15156 standards.

ASME B16.9 90° long radius elbows
Project Highlights
Product Supplied: 90° Long Radius Elbows
Standard: ASME B16.9
Material: ASTM B366 Grade WPNCMC.S
Application: Sour service pipeline systems
Destination: United Arab Emirates
Standards Compliance:
NACE MR-01-75 / ISO 15156 (for H2S resistance in oil & gas environments)

ASME B16.9 90° ASTM B366 Grade WPNCMC.S long radius elbows
Quality Assurance & Testing
To ensure the highest level of product integrity, each elbow was subjected to a comprehensive series of inspections and certifications, including:
✅ Mill Test Certificate (MTC)
✅ Dimensional Inspection Report
✅ Impact Test Report
✅ Chemical and Mechanical Property Test Report
✅ Non-Destructive Testing (NDT) Report
Our testing confirms that the material and dimensions strictly meet client specifications and international standards. The impact test results validate excellent toughness, even at low temperatures, while the chemical composition aligns with the required corrosion resistance properties for sour service applications.
Why WPNCMC.S for Sour Service?
The WPNCMC.S grade offers excellent resistance to sulfide stress cracking (SSC) and hydrogen-induced cracking (HIC), making it ideal for oil and gas systems where hydrogen sulfide (H₂S) is present. Combined with precision manufacturing and rigorous testing, this material ensures safe and reliable performance in corrosive environments.
Haihao Group remains dedicated to delivering high-performance piping components tailored to complex industrial demands. With advanced production capabilities and a robust quality management system, we continue to serve global clients across the oil & gas, petrochemical, offshore, and energy sectors with confidence and precision.
For inquiries or more technical details, please contact our sales team or visit our website’s product section.Email:sales@haihaogroup.com