About the belt we have lots of kinds: V belt,timing/ Synchronous belt,Conveyor belts. About the V belt ---the sizes as follows:
(1). Common\currently V belt

Models and Measures of Classical V-belt
Type Link width Top width Height Wedge angle
Z 8.5 10.0 6.0 40
A 11.0 13.0 8.0 40
B 14.0 17.0 11.0 40
C 19.0 22.0 13.5 40
D 27.0 32.0 19.0 40
E 32.0 38.0 25.0 40


(2.)AUTO v belt

Height
Type Top width Trimmed with teeth Normally trimmed Angle(°)
AV10 10.0 8.0 7.5 40
AV13 13.0 9.0 8.5 40
AV15 15.0 9.0 40
AV17 17.0 11.0 9.5 40
AV22 22.0 13.0 40


(3).ribbed belt :
Multi-wedge Belt Models and Sizes
Type Pitch Wedge height Belt thickness Wedge angle
PH 1.60 1.1 3 40
PJ 2.34 1.8 4 40
PK 3.56 2.4 5.5 40
PL 4.70 4.6 9 40
PM 9.40 9.4 17 40


Double ribbed belt has types of DPH,DPJ,DPK,DPL and DPM etc. Their specific structure allow
them to be used in combination with small diameter pulleys in what are called "serpentine drive" system . Its features are : high transmission efficiency , abrasion resistance , low noise , low
elongation, godd flexibility, long life service etc.