China Drill Collar Slip Type a Equivalent to Woolley Type a, Find details about China Wolley Type a Slip, Varco Drill Pipe Slip from Drill Collar Slip Type a Equivalent to Woolley Type a
Type | Drill Collar Size(in) | ||||||
A | 3-41/2 | 31/4-43/4 | 41/4-53/4 | 51/2-7 | 63/4-81/4 | 81/4-10 | 10-113/4 |
Bowl no. | API or No.3 | No.2 |