MTPM RigParts
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| Product name | Auxiliary Sheave Assembly / Rig Auxiliary Pulley |
| Application | Typically used for redirecting wire rope during auxiliary lifting operations |
| Sheave OD | 400mm (15 3/4 inches) |
| Groove diameter | 16~24mm |
| Material | 45# Alloy Steel (forged and welded alloy steel with mechanical properties equivalent to JIS S45C / AISI 1045 or higher-grade structural steel) |
| Surface Treatment | Rope groove induction hardened for wear resistance |
| Temperature rating | -40°C to 120°C |
| Service life | 8~10 years in standard drilling environments. Induction-hardened grooves and alloy-steel construction extend fatigue resistance. |
| Mounting Compatibility | Designed for mast structure attachment points or auxiliary hoisting brackets on common rig series such as ZJ30, ZJ40, ZJ50, and ZJ70. |
| Pre-delivery Inspection | 100% Magnetic Particle Testing (MT) & 100% Ultrasonic Testing (UT) on critical welds and forged sections. |
| Standard | Produced under API 8C |
| Third party witness and inspection report available: Bureau Veritas (BV), CCS, ABS, SJS etc. | |
The auxiliary sheaves are manufactured using forging-welded construction and strict process control. Each sheave assembly is designed to integrate seamlessly with the mast, drawworks auxiliary hoisting systems, and structural lifting points on rigs ranging from 1000 HP to 3000 HP. All products are supported by API 8C compliant quality control and documented inspection.
All product names, trademarks, and part numbers are used for identification purposes only and are the property of their respective owners.
