Pipe Size
套管尺寸

Holes per Feet
每英尺孔数

Size of Hole
孔径

Perforated Area per Feet
 每英尺开孔面积

3/4"

78

3/16"

2.15

1"

54

5/16"

4.14

1-1/4"

66

5/16"

5.06

1-1/2"

78

5/16"

5.98

2-1/16"

78

5/16"

5.98

2-3/8"

90

3/8"

9.94

2-7/8"

102

3/8"

11.26

3-1/2"

126

3/8"

13.91

4"

138

3/8"

15.24

4-1/2"

150

3/8"

16.56

5"

162

3/8"

17.88

5-1/2"

174

3/8"

19.21

6-5/8"

186

3/8"

20.53

7"

222

3/8"

24.51

9-5/8"

294

3/8"

32.46