内钩内钩是用于从套管内或油管内部打捞各种绳类及其它落物，如钢丝绳，电缆，录井钢丝，刮蜡片等。内钩分死钩和活钩两种结构形式。InternalhookTheInternalHookisusedforinsidecasingsortubingstocatchallkindsofropesandfishessuchaswire-lines,cables,loggingsteelpieces,paraffincutters,etc.Internalhooksare***ailableintwotypes:Live(adjustable)internalhookandDead(fixed)internalhook.内钩技术参数SpecificationofInternalFishhook型号Type***大外径Max.O.D.(mm)接头螺纹Connection(in)下入套管/油管Casing/TubingSize(in)NG73732-3/8油管接箍(TubingCoupling)3-1/2油管(Tubing)NG9595NC264-1/2油管(Tubing)NG114114NC315-1/2套管(Casing)NG136136NC316-5/8套管(Casing)NG150150NC387套管(Casing)NG176176NC388-5/8套管(Casing)NG190190NC509-5/8套管(Casing))