Workover Rig
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This page explains how Mast / Derrick is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
Vertical structural framework on a workover rig that supports the hoisting system and provides height for pipe handling operations.
Technical details and manufacturing context for Mast / Derrick
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Load Capacity | 150–500 kN | Includes hook load and dynamic factorsAPI 4F |
| Mast Height | 15–45 m | Determines pipe stand length and setback capacity |
| Base Footprint | 5.5×5.5–8×8 m | Affects rig stability and transport dimensions |
| Wind Load Rating | 38–50 m/s | Operating wind speed; higher for survivalAPI 4F |
| Operating Temperature | -40–50 °C | Steel properties derate outside range |
| Material Grade | Q345–Q460 MPa | Yield strength; higher for cold climatesGB/T 1591 |
| Mast Weight | 15–60 t | Influences transport and erection requirements |
| Racking Capacity | 3000–10000 m | Total drill pipe length stored in setback |
| Crown Block Load | 225–750 kN | Static load rating of crown blockAPI 8C |
| Max Racking Height | 12–28 m | Determines tripping speed and pipe length |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
| pressure: | N/A (structural component, not pressure vessel) |
| other spec: | Max hook load capacity: 50-500 tons (typical range), Max wind speed: 72-100 km/h (operational limit) |
| temperature: | -40°C to +50°C (operational ambient range) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
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According to directory reference data, the rated load capacity typically ranges from 150 to 500 kN, including hook load and dynamic factors, per API 4F. However, the exact value depends on the specific model and application, so it must be confirmed with the legal manufacturer or supplier.
Mast height determines the maximum length of pipe that can be handled in a single stand. Directory reference heights range from 15 to 45 meters. Taller masts allow longer stands, improving tripping efficiency, but also affect transport and erection requirements.
The operating wind speed rating typically ranges from 38 to 50 m/s per API 4F. Higher wind speeds may be considered for survival conditions. Always verify the specific wind load rating for your location and application with the manufacturer.
High-strength structural steel grades Q345 to Q460 per GB/T 1591 are commonly referenced. Higher grades are used for cold climates to maintain toughness. Confirm the appropriate grade for your operating temperature range with the supplier.
This component is essential for the following industrial systems and equipment:
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