Safety Sub

Safety sub were developed to provide the market with more reliable technology and more hoisting performance. Installed on the subsurface drill stem and can bear in fishing operations. It can fishing with all kinds of loads for pulling or pressing, also could be used to transmit torque. It is a subsurface safety equipment. In down-hole operation, in case of being needed, the safety joint is easy to be discharged off, to take out the drill stem above it. Included but not limited by the advantages mentioned, our safety sub might be your best choice.
General Features
• Suitable for cold area and desert environment
• Suitable for onshore or offshore operations
• Wide range of selection for different operations

Parameters

Type	5"	5-1/2"	7"	9-5/8"
OD (mm)	93.5	103	127	155.5
ID (mm)	45	50.5	57	79
Length (mm)	1186	1141	1263	1196
Tensile (kN)	89	89	111	177
Working Pressure (MPa)	70	70	70	70
Working Pressure (℃)	-29~+177	-29~+177	-29~+177	-29~+177
Tensile Strength (kN)	623	691	1156.4	1636.8
Bust Strength (MPa)	130	120	100	117
Collapse Resistance (MPa)	120	110	93	108
Thread	2-7/8"CAS.BxP	2-7/8"CAS.BxP	3-7/8"CAS.BxP	3-7/8"CAS.BxP

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