มม.(นิ้ว)
Nominai size
mm.(in.)
18 (1/2″)
20 (3/4″)
25 (1″)
35 (1 1/4″)
40 (1 1/2″)
55 (2″)
65 (2 1/2″)
80 (3″)
100 (4″)
125 (5″)
150 (6″)
200 (8″)
250 (10″)
300 (12″)
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มม.(นิ้ว)
Nominai size
mm.(in.)
18 (1/2″)
20 (3/4″)
25 (1″)
35 (1 1/4″)
40 (1 1/2″)
55 (2″)
65 (2 1/2″)
80 (3″)
100 (4″)
125 (5″)
150 (6″)
200 (8″)
250 (10″)
300 (12″)
