The function of a bolt is to provide a clamp load or preload (Fp) to sufficiently compress and stress the gasket and resist the parting forces exerted by the hydrostatic end force and other external loads. The hydrostatic end force is created by the pressure of the internal fluid across the internal area of flange. The internal area is generally the inside diameter of the sealing element.
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The Metal Spraying is a very critical operation in the manufacture processes of metallized film capacitor. Since the metal particles are produced by wire melted and high velocity to coat in the end faces, it makes contact with the capacitor winding primarily by partial penetration of the pockets in the end faces formed by staggering the films.http://www.westwu-machine.com/....api-pipe-production-

A ball valve is a shut off valve that controls the flow of a liquid or gas by means of a rotary ball having a bore. By rotating the ball a quarter turn (90 degrees) around its axis, the medium can flow through or is blocked. They are characterized by a long service life and provide a reliable sealing over the life span, even when the valve is not in use for a long time. http://www.tfcvalve.com/ball-valve/

WHAT IS A GLUE PEN?

A Glue pen is basically a pen with liquid glue inside instead of ink. You write with the pen and glue comes out instead of colored ink. No squeezing is required and you can apply the smallest amount of glue precisely!http://www.subbuteo.com.cn/main-products/

Since the introduction of aspirin in 1899, and more particularly since the advent of antibiotic "wonder drugs" in the 1940s, society has come to rely on the widespread availability of therapeutic drugs at reasonable prices.http://www.purestchem.com/phar....maceutical-intermedi