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A Top Sub, or Crossover Sub as it is sometimes called, is used to attach the motor to the drill-string.
The crossover Sub typically has a standard API box connection that connects to the drill-string and a proprietary pin connection that connects to the motor.
Top subs may also be designed with a float bore for those applications that may require Float Valve.
Optionally, a dump valve sub can be used in place of the top sub.
The dump valve sub has the same function as a top sub, but instead contains an internal bypass valve that enables the fluid in the drill-string to drain out when the string is pulled out of the hole.
Sub Top Sub,Steel Top Section,Truss Top Section,Top Section For Aluminum ROTATE DRILLING MOTOR CO., LTD , http://www.tcbearings.com
Name
XP-029 High Quality Cheap Vacuum Heavy Duty Suction Cup For Glass
Level suction
130kg
Vertical suction
100kg
G.W
21.9kg
N.W
18.3kg
MAES
55*34.5*46cm
Material
Aluminum Alloy
Packing
20pcs
4.Our Company
5.Packing & Delivery
6.FAQ
Â
1.Product Description
Name
XP-029 High Quality Cheap Vacuum Heavy Duty Suction Cup For Glass
Level suction
130kg
Vertical suction
100kg
G.W
21.9kg
N.W
18.3kg
MAES
55*34.5*46cm
Material
Aluminum Alloy
Packing
20pcs
4.Our Company
5.Packing & Delivery
6.FAQ
Â
Model NO.: XP-029
Transport Package: Carton
Specification: 1*20
Origin: China
HS Code: 73269090
Model NO.: XP-029
Transport Package: Carton
Specification: 1*20
Origin: China
HS Code: 73269090
1.Product Description