Al Waheed offers Valve Guide in sizes ranging from1" to 24". The Valve Guide has hardness in range of 180 - 220 BHN. Valve Guide has micro structure of matrix pearlite with 5% free ferrite. We also provide thread or spiral in inner diameter of valve guide to retain oil for long time between valve and valve guide & increase life both. Our valve guides are grounded to a surface finish 0.80 micro value on its outer diameter & maintain outer diameter within tolerance of 12 microns.