Function: The tool are used go engage the outside diameter of a fish, usually in situations
where conventional releasing overshots would not be a feasible option. They are designed to
tap threads into the steel so that the fish can be retrieved or the fishing job can be continued.
Applicable documents: SY/T5114-2008
the type and main parameter of beche
|
type |
O.D. mm |
catch size mm |
O.D. of the fish mm |
|
MZ-Nc26-（LH）（J） |
Φ86×300 |
52~41 |
48 |
|
MZ-Nc26-（LH）（J） |
Φ86×600 |
68~49 |
63.5 |
|
MZ-2 7/8REG-（LH）（J） |
Φ95×600 |
80~61 |
73 |
|
MZ-Nc31-（LH）（J） |
Φ105×600 |
95~76 |
89 |
|
MZ-Nc38-（LH）（J） |
Φ121×700 |
108~86 |
102 |
|
MZ-4 1/2FH-（LH）（J） |
Φ148×700 |
120~98 |
114 |
|
MZ-Nc50-（LH）（J） |
Φ156×750 |
135~110 |
127 |
|
MZ-5 1/2FH-（LH）（J） |
Φ178×750 |
150~125 |
141 |
|
MZ-6 5/8FH-（LH）（J） |
Φ203×750 |
176~151 |
168 |
|
MZ-6 5/8FH-（LH）（J） |
Φ203×750 |
183~158 |
178 |
