Differential boring for milling large container flange sealing surfaces

November 27 19:05:25, 2022

In the production of large petrochemical containers and nuclear power products, since the manholes and ends of large containers such as towers, tanks and reactors have flanges, these flange sealing surfaces are often machined after the overall welding, otherwise the water is affected. Pressure test seal, in addition to the long-term operation of the equipment, the flange sealing surface will also be corroded or deformed, thus losing the sealing effect, causing the leakage of the medium, causing the toxic medium to hurt or the flammable medium to catch fire.
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Otis is the world's largest manufacturer and maintainer of people-moving products, including elevators, escalators and moving walkways. Founded more than 160 years ago by the inventor of the safety elevator, Otis offers products and services through its companies in more than 200 countries and territories, and maintains approximately 1.9 million elevators and escalators worldwide. Otis is a unit of United Technologies Corp., a leading provider to the aerospace and building systems industries worldwide

People Nearly 66,000 employees globally with approximately 1,000 branch offices

Revenue $12 billion in 2015

Installed Base
Approximately 2.6 million OtisÂ® elevators and escalators in operation worldwide

Service Base Approximately 1.9 million elevators and escalators serviced by Otis worldwide

Countries Products sold and serviced in more than 200 countries and territories

Manufacturing Major manufacturing facilities on four continents

Engineering and Test Centers
Otis has a network of research and engineering facilities and test towers around the world

Company's two tallest elevator test towers are located in Shibayama, Japan (505 feet or 154 meters above ground; 89 feet or 27 meters below ground) and Bristol, Conn., United States (384 feet or 117 meters above ground)

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People	Nearly 66,000 employees globally with approximately 1,000 branch offices
Revenue	$12 billion in 2015
Installed Base	Approximately 2.6 million OtisÂ® elevators and escalators in operation worldwide
Service Base	Approximately 1.9 million elevators and escalators serviced by Otis worldwide
Countries	Products sold and serviced in more than 200 countries and territories
Manufacturing	Major manufacturing facilities on four continents
Engineering and Test Centers	Otis has a network of research and engineering facilities and test towers around the world Company's two tallest elevator test towers are located in Shibayama, Japan (505 feet or 154 meters above ground; 89 feet or 27 meters below ground) and Bristol, Conn., United States (384 feet or 117 meters above ground)