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German standard: DIN 444-1983
Italian standard: UNI 6058
Swivel bolts are widely used in: low temperature and high pressure valves, pressure pipelines, fluid engineering, oil drilling equipment, oil field equipment and other fields. They are often used in disconnecting and connecting occasions or tools such as the valve industry, folding bicycles, and baby carriages. Swivel bolts are convenient and quick to use, and they can be used with matching nuts to connect and tighten, and they have a wide range of applications.For valve joint bolts, the sealing problem cannot be ignored, because the running, leaking, dripping and other phenomena of the valve come from here, and the quality of the valve joint bolts is guaranteed.