17.5inch Tower Crane Mast Alloy Steel Master Bushing for Construction
The master bushings and insert bowls with the size from 17.5 to 37.5" ,They are cast with high-quality alloy steel and the sizes conform to API Spec 7K. There are two types : pin drive and square drive. API standard rotary slip, drill collar slip ,casing slip or roller Kelly bushing can be contained in them .
Bushing Type | Master(inch) | In bowl | Pipe size (inch) |
MSS as a whole and fission | 17.5 | API Bowl 1011 | 2 5/8-8 5/8 |
EXT. Bowl 1024 | |||
20.5 | API Bowl 1011 | 2 5/8-8 5/8 | |
EXT. Bowl 1024 | |||
27.5 | API Bowl 1022 | 2 5/8-8 5/8 | |
EXT. Bowl 1025 | |||
Insert Bowl 1026 | 9 5/8-10 4/5 | ||
MDSP fission | 17.5 | EXT. NO. 3 Taper | 2 5/8 -8 5/8 |
20.5 | EXT. NO. Taper | ||
MSPC fission | 20.5 | EXT.Bowl 1809 | 2 5/8-8 5/8 |
Bowl 1902 | 9 5/8-10 4/5 | ||
Body only 1805 | 11 4/5-13 5/8 | ||
27.5 | Bowl 1810 (No.3) | 2 5/8-8 5/8 | |
Bowl 1904(No.2) | 9 5/8-10 4/5 | ||
Bowl 1903(No.1) | 11 4/5-13 5/8 | ||
MSP fission | 27.5 | EXT.No.3 Taper | 2 3/8-8 5/8 |
MPSH | 27.5 | Bowl 1810 (No.3) | 2 3/8-8 5/8 |
Bowl 1904(No.2) | 9 5/8-10 3/4 | ||
Bowl 1903(No.1) | 11 3/4-13 3/8 |