Tower Crane
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This page explains how Jib (Boom) 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.
The horizontal structural member of a tower crane that extends outward to provide reach for lifting and moving loads.
Technical details and manufacturing context for Jib (Boom)
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Rated Lifting Capacity | 2–50 t | Maximum load at minimum radiusISO 4301-1 |
| Jib Length | 30–80 m | Determines maximum reach |
| Jib Section Height | 1.2–2.5 m | Affects structural stiffness |
| Jib Section Width | 0.8–1.8 m | Affects torsional rigidity |
| Material Grade | Q345B–Q690D | Higher grade for higher strengthGB/T 1591 |
| Yield Strength | 345–690 MPa | Minimum yield strength of materialGB/T 1591 |
| Max Wind Speed for Operation | 20–42 m/s | Above this, crane must be securedISO 4302 |
| Operating Temperature Range | -20–50 °C | Below -20°C requires special steel |
| Surface Treatment | Sa2.5 | Blast cleaning before paintingISO 8501-1 |
| Paint Thickness | 80–120 μm | Dry film thickness after curingISO 19840 |
| Weight | 5–30 t | Depends on length and configuration |
| Connection Type | Pin–Flange | Pin connection for quick assembly |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Jib (Boom).
This component is essential for the following industrial systems and equipment:
| pressure: | N/A (structural component, not pressure vessel) |
| other spec: | Max wind speed: 20 m/s operational, 42 m/s survival; Max load moment: 100-3000 kNm (model dependent); Max outreach: 30-80 m (model dependent) |
| temperature: | -20°C to +40°C (operational), -30°C to +50°C (storage) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
Manufacturer profiles associated with Jib (Boom).
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
The jib is the horizontal structural member that extends from the mast to provide reach for lifting and moving loads. It supports the trolley and hoist mechanism, allowing horizontal movement of loads at the construction site.
High-strength structural steel is commonly used, with material grades ranging from Q345B to Q690D (per GB/T 1591). The yield strength ranges from 345 to 690 MPa, depending on the grade.
Key parameters include rated lifting capacity (2–50 t at minimum radius), jib length (30–80 m), section height (1.2–2.5 m), section width (0.8–1.8 m), and weight (5–30 t). Also verify operating limits such as wind speed (20–42 m/s) and temperature range (-20°C to 50°C).
Regular inspection should focus on structural integrity, welds, and connections. Surface treatment and paint thickness should be checked per ISO 8501-1 and ISO 19840. Any signs of deformation, cracking, or corrosion should be addressed immediately. Always follow manufacturer guidelines.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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