Swivel bolts, also known as eye bolts in China, follow the GB/T798-88 standard; abroad, they are also known as fish eye bolts and follow the DIN444 standard. Refined eye bolts with smooth spherical surface and high thread precision. The thread specifications are M6 to M64. The surface treatment of articulated bolts includes: hot-dip galvanizing, infiltration plating, white plating, color plating and other anti-corrosion measures. The factory color of high-strength bolts is boiled black blue, and the materials are: Q235, 45#, 40Cr, 35CrMoA, stainless steel 304 And stainless steel 316 and so on. Application items: filter self-rescuer, gas detection instrument, dust mask, raincoat for mine, mine blaster.
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 fast 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. The quality of the valve joint bolts must be guaranteed to ensure the safety of use.
