High Pressure Integral Fittings

Hammer union integral fittings are widely used in high-pressure oil and gas systems; therefore, their testing parameters must ensure strength, sealing integrity, and safety.

Firstly, hydrostatic pressure testing is carried out to verify strength and leakage resistance, where fittings are typically tested at 1.5 times their working pressure rating. Next, pneumatic or gas leak testing is performed using air or nitrogen to detect even the smallest leaks and ensure reliable sealing performance.

In addition, material testing is conducted to confirm chemical composition, tensile strength, yield strength, and impact resistance, especially for low-temperature applications. Furthermore, hardness testing is done to ensure durability and compliance with industry requirements such as sour service conditions.

After that, dimensional inspection is performed to check threads, sealing surfaces, and tolerances for proper fit and interchangeability. Similarly, non-destructive testing methods like ultrasonic testing, magnetic particle inspection, and liquid penetrant testing are used to identify internal and surface defects.

Moreover, load and torque testing are carried out to ensure proper make-up and mechanical strength under operating conditions. At the same time, seal rings are tested for compression, leak integrity, and temperature resistance. In addition, coating and corrosion testing, such as salt spray tests, are performed where applicable.

Finally, all these tests are conducted in accordance with relevant standards, ensuring that hammer union integral fittings deliver reliable performance in demanding environments.