Direct supply from our certified 30+ acre logistics center. Each lifting mechanism is verified through ultrasonic non-destructive testing (NDT), slewing gear torque testing, and full structural validation.
In an era defined by rapid urbanization, commercial infrastructure scaling, and stringent green building protocols, tier-1 EPC contractors require unprecedented operational reliability and cost efficiency.
Modern building methodologies are moving toward off-site precast concrete and modular steel modules. These heavy-component structural assemblies necessitate higher nominal load moments (QTZ200, QTZ250, and MC320 series) to safely position modules weighing up to 12 metric tons at extended jib radii without tip deflection.
Global supply chain bottlenecks have elevated new machinery lead times past 14 months. Procuring late-model (YOM 2018–2023) certified used tower cranes provides enterprise buyers with immediate job-site readiness, amortizing capital deployment by up to 55% while maintaining manufacturer factory tolerances.
Dense urban construction zones enforce zero-overlap airspace violations. As a specialized exporter, Zhongqiang integrates multi-sensor zoning, optical blind-spot cameras, and coordinated frequency inverter controls across our entire portfolio of hammerhead, flat-top, and luffing cranes.
| Equipment Category | Representative Series | Nominal Load Moment | Max / Tip Load | Optimized Industry Application |
|---|---|---|---|---|
| Flat-Top (Topless) Crane | Zoomlion QTZ200 / Yongmao STT153 | 160 – 250 t·m | 10 – 12 t / 1.5 – 2.0 t | Multi-crane congested urban jobsites, overlapping airspaces |
| Hammerhead Tower Crane | Potain MC120 / MC320, SANY QTZ100 | 100 – 320 t·m | 6 – 12 t / 1.3 – 3.2 t | Heavy civil infrastructure, bridge pylons, high-rise structural steel |
| Vertical Construction Hoist | GAOLI / TEWEI / DAHAN SC200/200 | N/A (Twin Rack & Pinion) | 2 × 2,000 kg Payload | High-rise personnel ingress, facade material bulk vertical handling |
| Heavy Luffing-Jib Systems | Custom Engineering Packages | 250 – 500+ t·m | 16 – 32 t / Custom Tip | Super-tall towers, restricted air-rights, deep downtown footprints |
A construction crane failure is never an option. As an authoritative exporter holding national Level-2 qualification, every piece of lifting machinery leaving our Huai'an facility conforms to rigorous ISO, FEM, and EN standards.
Ultrasonic testing across mast chord connections, fishplate welds, and jib pin-holes ensures zero internal fissures, micro-fractures, or structural fatigue accumulated during prior operational cycles.
Dial indicators monitor slewing bearing axial clearance and backlash tolerances. Reducer gearboxes receive fresh synthetic lubrication, and hoisting mechanisms undergo no-load and dynamic load-drop testing.
Replacement of aged microswitches, recalibration of load-moment limiters (LML), testing of anemometer wind alarms, and verification of anti-collision VFD telemetry to protect site workers.
Our dedicated rigging crew disassembles each crane into modular components, marking all connection pins, applying rust-inhibiting coatings, and loading via specialized 40HQ, Open-Top, or Flat-Rack configurations.
Exporting construction cranes transcends maritime transit. Our global operational infrastructure guarantees smooth customs entry, full homologation alignment, and rapid job-site erection.
We provide full traceable OEM birth certificates, original nameplate verifications, clean commercial invoices, detailed packing lists with component piece weights, Bill of Lading, and certified Certificates of Origin (CO / Form E / EUR.1) to expedite port clearance.
To eliminate cross-border uncertainty, we facilitate independent third-party audits (SGS, BV, TÜV) directly within our Huai'an yard prior to export. Real-time high-definition video conferencing and live mechanical test runs are standard protocol for every overseas transaction.
Zhongqiang provides complete anchorage foundation engineering drawings, tie-in collar calculations for extended working heights, and electrical frequency tuning (50Hz / 60Hz conversions), accompanied by remote video guidance or dispatched master riggers.
Explore late-model construction cranes sourced from world-class manufacturing groups including Potain, Zoomlion, SANY, and Yongmao, available for prompt loading and sea freight departure.
Expert answers addressing the core commercial, structural, and regulatory queries encountered by international project directors and equipment procurement managers.
YOM designates Year of Manufacture. Zhongqiang deals primarily in late-model units (2018–2023). Every crane features its factory riveted metal nameplate intact, stamped with serial number, curb weight, and date. We cross-verify these details against OEM central database records to guarantee full traceability.
Our certified inspection division executes an intensive 128-point inspection checklist. This includes magnetic particle testing on structural weldments, ultrasonic inspection of the slewing ring teeth and bearing clearance, hydraulic pressure testing, wire rope core verification, and full electrical load diagnostics.
Our in-house logistics riggers disassemble the jib into modular chord segments (typically 5m or 10m). Sections are arranged into 40ft High Cube containers, Open Tops, or custom Flat Racks with heavy-duty lashing straps, protective dunnage, and moisture-absorbing vapor barriers to avoid maritime corrosion.
Absolutely. Buyers are warmly welcome to visit our 30+ acre warehouse base located in Huai'an, Jiangsu, China. Alternatively, clients regularly commission independent inspection authorities like SGS or Bureau Veritas, or arrange high-definition live video mechanical tests coordinated by our bilingual engineering staff.
