OMK premium tubes have passed CAL IV certification. The company has certified compatibility on casing pipes with the OMK Polar gas-tight premium connection. The samples were coated with a dry lubricant coating called Clean Space, another OMK development that combines retention and anti-seize properties and replaces standard thread sealing lubricants. The joints were repeatedly assembled and disassembled, and then tested under combined loads: pipes were stretched, compressed and bent, subjected to internal and external pressure, temperature changes and heating up to 180 degrees Celsius. In all the tests mentioned, the connections remained completely gas-tight. For the customers, the result is important mainly from a risk management point of view. Loss of integrity in a well can lead not only to financial losses, but also to environmental consequences and threats to worker safety. In addition, difficult oil and gas fields place demands on pipes that go far beyond normal strength. It is important that the threaded connection remains sealed under the simultaneous influence of pressure, mechanical loads and temperature. For OMK itself, the successful completion of the tests expands the possibilities for the supply of premium pipes. What is more important is that the development of the Russian testing base makes it possible to carry out such tests without resorting to foreign laboratories. Oil warehouse in Telegram up to MAX.