Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Standard dimension ratio

ASTM D1785 covers sizes from Vs through 12 in of PVC pipe in IPS Schedules 40, 80, and 120, except that Schedule 120 starts at V2 in and is not IPS for sizes from V2 through 3 in. ASTM D2241 covers sizes Vs through 36 in but with IPS outside diameter and seven standard dimension ratios 13.5, 17, 21, 26, 32.5, 41, and 64. [Pg.107]

The wall thicknesses of most thermoplastic pipe of solid and homogeneous wall construction are defined in accordance with the standard dimension ratio (SDR) concept, whereby the... [Pg.762]

Standard dimension ratio (SDR) a specific ratio of the average specified outer diameter to the minimum specified wall thickness Do/h. [Pg.898]

Many manufacturers of thermoplastic piping material use the standard dimension ratio (SDR) method of rating pressure pipe. SDR is the ratio of the pipe O.D. to the minimum thickness of the wall of the pipe. It can be expressed mathematically as ... [Pg.76]

Maximum allowable pressure ratings decrease with increasing diameter size. To maintain pressure ratings at standard temperatures, PVC is also available in Standard Dimension Ratio (SDR). SDR changes the dimensions of the piping in order to maintain the maximum allowable pressure rating. [Pg.83]

Solid wall PE made in standard outside diameters and to standard dimension ratios (SDR). ASTM has a standard series of rations from which SDRs are developed. The formula for finding a SDR is fairly simple. You divide the specified outside diameter by the specified minimum wall thickness for pipe of sohd wall construction. Evaluation of the SDR will show that the lower the SDR, the stiffer the pipe wall. When working with force mains, the SDR must be based on pressure requirements for the system. [Pg.261]

The ASTM Standard D-2241, Table 7.5, uses a standard dimension ratio (SDR) for piping, where... [Pg.153]

See other pages where Standard dimension ratio is mentioned: [Pg.979]    [Pg.979]    [Pg.979]    [Pg.979]    [Pg.106]    [Pg.106]    [Pg.802]    [Pg.802]    [Pg.802]    [Pg.802]    [Pg.1139]    [Pg.1139]    [Pg.1142]    [Pg.1142]    [Pg.983]    [Pg.983]    [Pg.983]    [Pg.983]    [Pg.411]    [Pg.612]    [Pg.529]    [Pg.6]    [Pg.76]   
See also in sourсe #XX -- [ Pg.411 ]

See also in sourсe #XX -- [ Pg.612 ]

See also in sourсe #XX -- [ Pg.529 ]



SEARCH



© 2024 chempedia.info