Reinforced Type and Piercing Type Spiral Duct Specification Table

附錄二　加強型及沖孔型螺旋風管規格表

管　　徑 ∮		螺旋間距	補強溝間距	厚　度 (mm)
inch	mm	mm	mm	0.5	0.6
6"	150	120	30	●
7"	175	120	30	●
8"	200	120	30	●
9"	225	120	30	●
10"	250	120	30	●
11"	275	120	30	●
12"	300	120	30	●
13"	325	120	30	●
14"	350	120	30	●
15"	375	120	30	●
16"	400	120	30	●
17"	425	120	30	●
18"	450	120	30	●
19"	475	120	30	●
20"	500	120	30	●
22"	550	120	30	●
24"	600	120	30	●
26"	650	120	30	●
28"	700	120	30		●
30"	750	120	30		●
32"	800	120	30		●
34"	850	120	30		●
36"	900	120	30		●
38"	950	120	30		●
40"	1000	120	30		●
44"	1100	120	30		●
48"	1200	120	30		●
52"	1300	120	30		●
56"	1400	120	30		●
60"	1500	120	30		●
64"	1600	120	30		●
68"	1700	120	30		●
72"	1800	120	30		●