1.  drive by electric motor, low ratio, big torque 
2. electric motor enclosed, water-proofed, suit for cutting of pipe with water inside
3. suit for cutting of Iron Pipe, Concrete Pipe and etc
The main technical parameters : 

Model		WDG4-1
Diameter of pipe being cut (mm)		400~2400
Climbing speed	High gear mm/Min	Traveling 79mm per minute
	Low gear mm/Min	Traveling 51mm per minute
Speed of main engine		2850R/min
Motor power		3KW/three-phase
Linear velocity of blade	¢250	37.31M/S
	¢300	44.77M/S
	¢350	52.23M/S
Dimension (mm)		620×610×330
Weight (Kg)		86
Chain 1” (pitch 25.4)		173 pitch×2
Packing Size (mm)		950x720x470
Machine Weight (Kg)		86
Total Weight (Kg)		142
Note: the length of chain is designed as per DN1200mm concrete pipe

Spare Parts :

The technical parameters about the pipeline cutting ( all in mm )

Pipe Data				Cutting Time		Chain		Feed Circle Number			Saw Blade
Material	OD	Wall thickness	Circumference	Fast Gear	Slow Gear	Length	pitch number	Actual	Balance	Feed	Diameter
DI CI Pipe	500	14	1659	24	37	2167	85	27	20	47	250
	600	16	1985	28	43.5	2495	98	31	20	51	250
	800	18	2626	36	56	3135	123	34	20	54	250
	1000	20	3267	44	69	3776	149	38	20	58	250
	1400	22	4536	60	94	5045	199	42	20	62	250
SRCP, PRCP	400	50	1571	23	35	2079	82	94	20
	500	60	1948	28	43	2456	97	113	20
	600	60	2262	32	49	2770	109	113	20
	800	80	3016	41	64	3524	139	151	20
	1000	85	3676	49.5	77	4184	165	160	20
	1400	90	4964	66	102	5272	215	169	20

Note:  SRCP: Self-stressed reinforced concrete pipeline,      PRCP: Pre-stressed reinforced concrete pipeline