● 용도 : 낙농, 식품공업용 배관 (KS D3585,
JIS G3447, ASTM A270)
●
강관치수 및 허용공차
KS D3585 (JIS
G3447) |
ASTM A270 |
외경 |
두께 |
길이 |
외경 |
두께공차 |
길이공차 |
치수(mm) |
허용공차(mm) |
(mm) |
허용공차(mm) |
(m) |
허용공차(mm) |
치수
(mm) (inch) |
허용공차
(mm)(inch) |
(inch) |
(mm) |
25.4 |
±0.15 |
1.2 |
±10% |
46 |
+10-0 |
25.4 |
1 |
+0.05
-0.20 |
+0.002
-0.008 |
±12.5% |
+1/8
-0 |
+3.2
-0 |
31.8 |
±0.16 |
1.2 |
- |
- |
- |
- |
38.1 |
±0.19 |
1.2 |
38.1 |
11/2 |
+0.05
-0.20 |
+0.002
-0.008 |
50.8 |
±0.25 |
1.5 |
50.8 |
2 |
+0.05
-0.28 |
+0.002
-0.011 |
63.5 |
" |
2.0 |
63.5 |
21/2 |
+0.05
-0.28 |
+0.002
-0.011 |
76.3 |
" |
2.0 |
76.2 |
3 |
+0.08
-0.30 |
+0.003
-0.012 |
89.1 |
+0.30
-0.40 |
2.0 |
- |
- |
- |
- |
101.6 |
+0.35
-0.40 |
2.0 |
101.6 |
4 |
+0.08
-0.38 |
+0.08
-0.38 |
|
|
