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It is used in oil field for upper unloading the casing or casing screw thread during the operation of lower casing. - details see: https://www.machineto.com/tq-series-casing-power-tongs-10159520

The casing power tongs are extensively used in oil field for upper unloading the casing or casing screw thread during the operation of lower casing. The products are powered by hydraulic pressure, adopting the tilt cylinder type high pulling torque motor and mechanical type shift gear to make the tongs structurally simple and reliable, operationally safe and convenient. The tongs’ pressure, touque and number of turns can be monitored and controlled by computer by equipped torquemeter. Relevant national patents of invention have already achieved. The casing power tongs meet the requirements of SY/T5074 standard and API Spec 7K specifications.

Technical SpecificationsofTQ SeriesofCasing Power Tongs

Model			TQ178-16Y	TQ340-35Y	TQ508-70Y	TQ178-16	TQ340-35	TQ356-55
Size Range		mm	101.6~178	114.3~340	244.5~508	101.6~178	114.3~340	114.3~356
		in	4~7	4~13	9~20	4~7	4~13	4~14
Hydraulic System Max.Pressure		MPa	18	21	20	18	18	16.6
		psi	2610	3045	2900	2610	2610	2400
Hydraulic System Working Pressure		L/min	110~160	110~170	110~170	110~160	110~160	110~160
		gpm	29.3~42.7	29.3~45.4	29.3~45.4	29.3~42.7	29.3~42.7	29.3~42.7
Max.Torque	High Gear	kN.m	2.4~3	4.0~5.6	8.4~10.7	2.4-3	2.5-3	3.4-4.5
		ft.lbf	1770~2210	2950~4130	6190~7890	1770~2210	1844-2210	2506-3319
	Low Gear	kN.m	15~18	26~35.2	48.9~70.5	14.5-17.5	32-40	45-57.4
		ft.lbf	11060~13270	19175~25960	37244~52000	10694-12900	23600~29500	33190-42400
Speed	High Gear	rpm	54~79	57—95	26~43.6	54—79	60~86	52—76
	Low Gear	rpm	9~13	9-15	46.6	9~13.1	3.6~5.3	3.9~5.6
Overall Size		mm	1500×760×780	1580×900×860	2080×1280×760	1450×760×740	1580×900×880	1590×950×900
		in	59×30×30.7	62.2×35.4×33.9	82×50.4×30	57×30×29.1	62.2×35.4×34.6	62.6×37.4×35.4
Weight		kg	560	760	1550	580	780	850
		lb	1230	1670	3410	1280	1720	1870