After completing the production of the eighth batch order for our Brazilian customer, Haihao Group conducted a rigorous quality inspection to ensure that every product meets international standards and customer requirements. Our comprehensive quality control process guarantees the reliability and safety of our ASME B16.9 pipe fittings, including dimensional inspection and chemical composition testing.

ASME B16.9 Pipe Fittings
Key Quality Inspection Procedures
Dimensional Inspection
Each pipe fitting was carefully measured to ensure precise diameter, wall thickness, and angle conformity according to ASME B16.9 standard. This step ensures proper fitment and seamless integration into the customer’s piping system.

Strict Quality Inspection of Pipe Fittings
Chemical Composition Testing
Chemical composition analysis is a critical quality control step, as it determines whether the material meets the required specifications. For this order, we conducted spectrochemical analysis on ASTM A403 WP316/316L and ASTM A234 WPC materials. Ensuring the correct chemical composition is crucial because:
It guarantees corrosion resistance, especially for stainless steel fittings.
It ensures compliance with industry standards like NACE MR0175, which is essential for applications in sour environments.
It maintains mechanical properties such as strength, toughness, and durability.
Surface and Visual Inspection
All fittings were examined for surface defects, including cracks, dents, or irregularities, to ensure a smooth finish and structural integrity.
Marking and Final Verification
Once all tests were successfully completed, the fittings were properly marked with material grade, size, heat number, and standard compliance for full traceability.

Strict Quality Inspection of Pipe Fitting
Commitment to Excellence
At Haihao Group, we uphold strict quality control at every stage, from raw material selection to final inspection. Our advanced testing facilities and experienced QC team ensure that our pipe fittings meet the highest standards of safety, durability, and performance.
This meticulous inspection process not only assures product reliability but also reinforces our commitment to delivering top-quality pipe fittings to our global customers.
For more information about our quality assurance procedures, feel free to contact us! Email:sales@haihaogroup.com