The company produces fastening elements for submersible pumps units with fatigue testing: pins, bolts, screws. Pins, bolts have 10.9 quality class, screws — 10 quality class.
Material - steel grades 30ХГСА, 05Х16Н4Д2Б; nickel-base alloy K-500 with high strength and corrosion-resistant properties.
- hexagon-headed bolt М8-М16;
- hexagon-headed screw М8-М16 and round head screw with internal hex;
- pin М8-М16, including combined pin, length
- inch threaded fastening elements.
Other specifications are determined by customer.
Fastening elements made of steel grade 30ХГСА can stand 300 thousands cycles*, fastening elements made of steel grade 05Х16Н4Д2Б can stand more than 1 million cycles*.
* - Number of cycles before breaking during durability testing according to method of Institute of Mechanical Engineering of Russian Academy of Sciences - 059.01.
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