Pipe Size (I.D.	Minimium Strength (lb/linear foot)	Laying Length	Rows of Perforations	Perforations per Row
*4″	1250	4′	4	13
*6″	1600	4′	4	13
*8″	1600	5′	4	13
10″	1600	5′	6	13
12″	1600	6′	6	17