GOST 33259 RTJ Weld Neck Flanges by Haihao Group: Engineered for extreme performance & reliability
At Haihao Group, we specialize in manufacturing high-performance pipeline components that exceed global standards. Our recent collaboration with a leading Russian client underscores our expertise in delivering precision-engineered solutions for critical industrial applications. Here’s why our RTJ Weld Neck Flanges stand out as the ultimate choice for your projects:
GOST 33259 Gr.F22 Cl.3 RTJ Weld Neck Flange
Precision Engineering Meets GOST 33259 Standards
The client required DN250-PN100 RTJ Weld Neck Flanges manufactured from Grade F22 Class 3 material, fully compliant with GOST 33259 specifications. Our team meticulously executed every step:
- Material Excellence: Gr.F22 Cl.3 steel ensures superior strength and corrosion resistance, ideal for high-pressure, high-temperature environments.
- Advanced Heat Treatment: Post-welding heat treatment was performed to optimize microstructure, ensuring stress relief and enhanced mechanical properties.
- 100% Ultrasonic Testing (UT): Every flange underwent rigorous UT inspection to guarantee zero defects, cracks, or inclusions.
Guaranteed Performance in Extreme Conditions
To meet the client’s stringent operational requirements, we conducted:
- Low-Temperature Impact Testing (KCV): Flanges were subjected to -20°C Charpy V-notch tests, achieving >50 J/cm² impact toughness—exceeding safety thresholds for Arctic or sub-zero applications.
- Hardness Control: A minimum hardness of 174HB was maintained to ensure durability without compromising weldability.
GOST 33259 RTJ weld neck flange
End-to-End Quality Assurance
Our commitment to excellence includes:
- Anti-Rust Protection: Flanges were coated with premium anti-rust oil to prevent corrosion during transit and storage.
- Traceable Documentation: Full material certifications, test reports (UT, impact, hardness), and GOST compliance records provided.
Why Choose Haihao Group?
- Global Expertise, Local Precision: With decades of experience serving oil & gas, petrochemical, and power industries, we tailor solutions to meet regional standards (GOST, ASME, EN).
- Turnkey Solutions: From design to delivery, testing, surface treatment, and logistics seamlessly.
- Competitive Lead Times: Despite rigorous quality protocols, we ensure on-time delivery to keep your projects on track.
Partner with Haihao Group for Flanges Built to Last
Whether you require GOST-compliant flanges, custom dimensions, or specialized testing, our team is ready to deliver.
📩 Contact Us Today!
Email: sales@haihaogroup.com