1.Kelly Bushings
Kelly Bushings designed and manufactured in accordance with API 7K and other technical standards.
The loaded parts are made of good-quality alloy steel.
|
odel
|
Type
|
Way of Drive
|
Square(in)
|
Hex(in)
|
|
HDS
|
Heavy
|
Square Drive
|
3-6
|
3-6
|
|
27-HDP
|
Pin Drive
|
3-6
|
3-6
|
|
20-HDP
|
Pin Drive
|
3-6
|
3-6
|
|
RTM4
|
Medium
|
Square Drive
|
2 1/2? 1/4
|
3-4 1/4
|
|
20-MDP
|
Pin Drive
|
2 1/2--4 1/4
|
3-4 1/4
|
|
17-MDP
|
Pin Drive
|
2 1/2--4 1/4
|
3-4 1/4
|
|
RTS4
|
Light -duty
|
Square Drive
|
2 1/2--4 1/4
|
3-4 1/4
|
2.the master bushings and insert bowls
the master bushings and insert bowls with the size from 171/2 to 371/2 inch. They are cast with high-quality alloy steel and the sizes conform to API Spec 7K. There are two kinds of type. pin drive and square drive. API standard rotary slip, drill collar slip, casing slip or roller Kerlly bushing can be contained in them.
|
Bushing Type
|
Rotary Table Size(in)
|
Handlin TubularOD(in)
|
|
MSS
|
Square drive
|
17 1/2(18)
|
2 3/8---8 5/8
|
|
20 1/2
|
|
23
|
|
27 1/2
|
|
Square drive
|
17 1/2
|
|
20 1/2
|
|
22
|
|
23
|
|
27 1/2
|
2 3/8----10 3/4
|
|
MSPC
|
Pin Drive
|
20 1/2
|
|
|
23
|
|
|
27 1/2
|
2 3/8? 5/2
|
|
MDSP
|
Pin Drive
|
17 1/2
|
|
|
18
|
|
|
20 1/2
|
2 3/8-8 5/2
|
|
MSP
|
Pin Drive
|
23
|
|
|
27 1/2
|
2 3/8 ---8 5/2
|
|
MPCH
|
Pin drive
|
37 1/2
|
2 3/2?3 3/2
|
|