High-speed propeller is a kind of ship with high speed and fast sailing. It has 3, 4. 5, six and 7 blades, small hub and large ratio of blade surface to disk surface. Usually the engine is high rpm and gear box ratio is less than 2.5:1, so its propeller r
PTFE insulating gasket parts have many applications as sealing materials. Because of its own durability and anti-aging, it has achieved its good sealing performance, and has been widely applied in petroleum, chemical, pharmaceutical, power and steel indus
The seamless steel pipe for fluid (fluid pipe) is a kind of hollow section with no welds from beginning to end. Seamless steel pipes for fluids are divided into two categories: hot-rolled seamless steel pipes for conveying fluids and cold-drawn seamless s