〈Table 2〉 Standard compatibility (specifications)

Type

Internal diameter
(m/m)

		800	900	1,000	1,100	1,200	1,350	1,500
Outer diameter of main pipe (m/m)		1,012	1,140	1,256	1,362	1,486	1,656	1,840
Machine length (m/m)		2,550	2,550	2,550	2,550	2,550	2,550	2,850
Weight (t)		2.4	3.4	4.0	4.6	5.2	6.4	8.5
Mud removal bore (m/m)		200	200	250	250	300	300	350
Allowable small stone diameter (m/m)	Major axis	250	250	300	300	360	360	420
	Minor axis	160	160	200	200	250	250	300
Standard range of application	N Value	About 50					About 60
	Ratio of small stones(%)	About 50%					About 80%

		800	900	1,000	1,100
Outer diameter of main pipe (m/m)		1,012	1,140	1,256	1,362
Machine length (m/m)		2,550	2,550	2,550	2,550
Weight (t)		2.4	3.4	4.0	4.6
Mud removal bore (m/m)		200	200	250	250
Allowable small stone diameter (m/m)	Major axis	250	250	300	300
	Minor axis	160	160	200	200
Standard range of application	N Value	About 50
	Ratio of small stones(%)	About 50%

Remarks: The specifications above are subject to change without prior notice.