Flange single sphere food-grade rubber soft connection is commonly used, what are the characteristic

The diameter of the flanged single sphere food grade rubber soft connection can be divided into outer diameter, inner diameter, nominal diameter. The outer diameter of the tube material for the flange single sphere food-grade rubber soft connection is indicated by the letter D, followed by the size of the additional outer diameter and wall thickness, for example, the outer diameter is 108 flange single sphere food-grade rubber soft connection, the wall thickness is 5MM, with D108*5.
 
Flange single sphere food-grade rubber hose connection is also indicated by the outside diameter, such as De63, others such as reinforced concrete pipe, cast iron pipe, flange single sphere food-grade rubber hose connection using DN, in the design drawings are generally nominal diameter to indicate. Nominal diameter is artificially specified for the convenience of design, manufacturing and maintenance of a standard, but also more nominal diameter, is the flange single sphere food-grade rubber flexible connection (or pipe fittings) specification name.
Flange single sphere food-grade rubber soft connection of several advantages. 1 . Improve the surface roughness, roughness basically reach RA ≤ 0.08µM or so.
2 . Correct roundness, ovalness can be ≤ 0.01mm.
3 . Increase the surface hardness through high pressure, eliminate stress deformation, increase hardness ≥ 4 °
4 . Residual stress layer after machining, fatigue strength increased by 30%.
5 . Improve the quality of parts, reduce wear and tear, extend the service life of parts, but reduce the cost of parts processing.