Controlled Steel Coil Handling
A handling approach for repeatable coil movements where geometry, storage position, and inspection requirements must be defined together.
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Project knowledge and practical references.
Explore technical articles, solution approaches, and project examples for lifting equipment.
Solutions
Solutions
Heavy Load Auxiliary Handling
An auxiliary system approach for heavy, long and irregular components where crane capacity, load distribution and site clearance must be reviewed together.
Read moreCase studies
Case studies
A conversation about tower crane safety that ended up on their own cranes
A crane rental company from South Korea came to China to source crane components and met Shandong Zhinuo at a trade show. The question they brought was not about price or lead time — it was about what happens when several tower cranes work the same airspace. What followed was a proposal, three visits to China, and a machine the client arranged himself so the equipment could be fitted and tested on it.
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A UK client flew in to inspect a custom tower crane safety system
A UK client's custom tower crane needed a safety system built around it, not bolted onto it. ZNAQ developed the package under the crane factory's requirements, and both engineering teams confirmed mounting, calibration and alarm logic on site.
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Indonesia's first soda ash project — a smart site platform live in 15 days
ZNAQ deployed a smart construction site platform at the PKT soda ash project in Bontang, Indonesia — labour registration, site-wide video, tower crane monitoring, dust and noise control, a site network and a bilingual command platform, live in 15 days.
Read moreArticles
Articles
A Practical Maintenance Schedule for Tower Crane Parts: From Shift Checks to Annual Inspections
Maintenance works when it is scheduled, not when it is remembered. This note lays out a practical schedule for tower crane accessories, from pre-shift checks to annual inspections, and how to keep records that mean something.
Read moreCompatibility and Interchangeability: Matching Accessories to Crane Brands and Models
A part that fits is not always a part that is correct. This note explains how to match crane accessories to a machine, what to verify and why written confirmation matters more than a visual comparison.
Read moreQuality Control for Crane Accessories: Material Certs, NDT and Dimensional Checks
Quality control is what separates a part that fits and lasts from one that merely looks right. This note covers material certificates, non-destructive testing, dimensional checks and the documents a buyer should request.
Read moreExport Packing and Shipping of Crane Accessories: Protecting Steel on the Way
Crane accessories often travel thousands of kilometres before they are fitted. This note covers export packing, protection from corrosion and impact, documentation and the checks on arrival.
Read moreOn-Site Spare-Parts Kits: What to Stock to Avoid Downtime
Downtime is usually caused by a small part nobody stocked. This note explains how to build an on-site spare-parts kit for tower crane accessories, what to include and how to keep it usable.
Read moreCorrosion Protection for Tower Crane Parts: Coating, Galvanising and Maintenance
Tower crane accessories live outdoors and corrode quietly. This note covers paint and galvanising, where corrosion starts, and how to inspect and repair protection before section loss begins.
Read moreHigh-Strength Bolts in Crane Structures: Torque, Reuse and Traceability
Bolted joints hold a tower crane together. This note explains high-strength bolts, correct torque and sequence, when a bolt may be reused and why traceability matters on structural joints.
Read moreSafety Ropes and Lifelines: Fall Protection for Crane Work at Height
People climb, inspect and maintain tower cranes at height. This note covers safety ropes and lifelines, their construction and connectors, inspection and the rules that make fall protection real.
Read moreOperator Console: Controls, Displays and Monitoring Integration
The console is where the crane is driven and watched. This note covers control layout, display placement and how a safety-monitoring system should be integrated without crowding the operator.
Read moreOperator Cabin: Visibility, Comfort and Safety for Long Shifts
The cabin is the operator’s workplace for an entire shift. This note covers visibility, glazing, seating, attachment and the checks that keep the cabin safe and usable through the seasons.
Read moreTower Head and Pendants: Tension, Alignment and Inspection
The tower head anchors the jib and counter-jib pendants. This note explains how the head and pendants carry tension, how alignment affects the crane and what to inspect before and during service.
Read moreJib and Counter-Jib Sections: Assembly Order, Bolted Joints and Rated Capacity
The jib sets the crane’s reach and the counter-jib balances it. This note covers lattice construction, the order of assembly, bolted joints and why adding or removing sections changes the rated capacity.
Read moreCounterweight Blocks: Matching the Set to Jib Length and the Load Chart
Counterweights balance the jib, and the wrong set changes the load chart. This note explains how counterweight is matched to jib length, how blocks are secured and what to check before erection.
Read moreHoist Rope: Inspection Intervals, Discard Criteria and Safe Replacement
The hoist rope is one of the highest-wear parts of a tower crane. This note explains how rope fails, what to look for during inspection, when it must be discarded and how to replace it safely.
Read moreHook Blocks and Safety Latches: Inspection, Wear Limits and Replacement
The hook block is where the crane meets the load. This note explains its parts, the wear that matters, how to inspect it before a shift and when a hook must be replaced rather than reused.
Read moreSlewing Unit and Rollers: Wear Points, Lubrication and When to Replace
The slewing unit turns the crane and the rollers keep the trolley moving. This note identifies the wear points in both systems, explains lubrication and backlash checks, and sets out when a part should be replaced rather than adjusted.
Read moreWall Ties and Anchorage Frames: Spacing, Free-Standing Height and Building Anchors
Above its free-standing height a tower crane must be tied back to the building. This note explains wall ties, tie spacing, building anchors and what the crew must confirm before the crane climbs.
Read moreAnchor Bolts and Embedded Legs: Getting the Base Right Before the Pour
Foundation hardware decides whether a tower crane stands plumb. This note explains anchor bolts and embedded legs, how they are positioned, and why the checks that matter happen before the concrete is poured.
Read moreMast Standard Sections: Chord Tolerance, Bolting and Interchangeability
The mast is built from identical bolted lattice sections. This note explains what makes sections interchangeable, how bolted joints should be made up, and where tolerance and bolt grade decide whether a crane stays plumb.
Read moreTower Crane Accessories: What a Complete Spare-Parts Package Should Include
A practical buyer guide to the mechanical accessories that keep a tower crane working: mast sections, foundation parts, wall ties, rollers, hook blocks and hoist rope. It explains how to specify a package instead of ordering one piece at a time.
Read morePrecast and bridge segment placement: positioning meets monitoring at long radius.
Placing a precast panel or bridge segment at long radius asks two things at once, a marked line to the target and live radius, load and hook-height data. ZNAQ-JG1 and ZNAO-TG2 answer both halves before the lift begins.
Read moreAfter Dark, a Green Mark: Using a Laser Landing Point for Night Work and Exclusion Zones
Night work hides the hook and flattens depth cues, so the final metre is harder to judge. A trolley-mounted green laser marker draws the landing point on the deck and doubles as a visible zone marker for the crew after dark.
Read moreC-hook systems for coil and roll handling: the hook is not chosen by capacity alone.
A C-hook handling system addresses the round shape of coils and rolls instead of fighting it. Coil width, inner diameter, storage position, lifting height and crane interface are reviewed together before the hook is chosen.
Read moreModular support beams for long and irregular loads: the load data decides the beam, not the other way round.
A modular auxiliary support beam gives long and irregular components stable load distribution and flexible support points. Capacity, beam length and lifting points are confirmed from real load data, never assumed from a similar job.
Read moreFrom the Cab to the Cloud: What Crane Data Leaves the Site, and Who Sees It
Platform docking carries the readings and alarm logs of a tower crane safety monitoring system beyond the machine, to an enterprise cloud and, where required, a regulatory one. This note explains what flows, who sees it and why.
Read moreHook tracking across a telescoping boom: a camera aimed once cannot hold the hook, so the view has to travel with the boom.
A boom-mounted hook-tracking camera with a wireless bridge keeps the hook and load in frame as the boom telescopes, with no cable to route or crush. This note covers the mounting, the auto-zoom, the TX/RX pairing and the pre-lift video link check.
Read moreAfter an Incident: How Logged Alarm Data Supports an Accident Back-Trace
An accident back-trace is built on the alarm log, not on memory alone. This note explains how logged tower crane data reconstructs a timeline after an incident, what the record can and cannot show, and how a review finding turns into a change on site.
Read moreWho Is Really at the Controls? Optional Face-ID Driver Identity on Tower Crane Shifts
A tower crane shift begins with a person walking to the cab. Optional face-ID driver identity control links operation to a recognised driver, so a shift becomes accountable and authorised. This note explains what the function does and where it sits.
Read moreFitting Monitoring to a Working Truck Crane Without Cutting the Body or Touching the Circuits
A split-modular monitoring kit for mobile truck cranes uses magnetic wireless sensors, so the package fits without body cutting or circuit modification, while a cab transformer gives the host and cameras a stable 12 volts.
Read moreWhen Someone Steps into the Swing Zone: How Radar Gives a Truck Crane Crew an Earlier Warning
Millimeter-wave radar on a mobile truck crane watches the swing zone for people and obstacles, warning the crew through the cab host before contact, and fitting alongside the panoramic cameras without cutting the machine body or changing its circuits.
Read moreWhat a 360-Degree Panoramic View and an 11.6-Inch Host Change for a Truck Crane Crew
A 360-degree panoramic camera and an 11.6-inch cab host give a truck crane crew a live view of the machine surroundings while the screen also shows load, moment, boom length, radius, height, tilt and wind, changing how blind lifts are set up, run and reviewed.
Read moreWhen the Operator Cannot See the Hook: How Hook Visualization Changes a Blind Lift
Blind lifts happen when geometry, not carelessness, hides the hook. This note explains how an HD along-boom camera, a low-latency wireless bridge and a cab display give the operator a live, real-time view of the hook and the landing zone, and where visualization still defers to the banksman and the lift plan.
Read moreThe Measurements That Matter: What Load, Moment, Radius, Height, Slew, Wind and Tilt Tell a Crew
Load, moment, radius, height, slew, wind and tilt each answer a different question on a tower crane. This note explains what every measurement tells a crew and why reading the seven values together is what matters.
Read moreOverload and Threshold Alarms: How Limits and Auto-Alarm Behaviour Work in Daily Practice
Overload and threshold alarms are only as good as their settings. This note explains where tower crane limits come from, how the system sounds an alarm in the cab, and why a warning that is ignored is worse than none.
Read moreKeeping the Jib Out of Trouble: How Zone Limiting Draws the Lines a Crane Must Not Cross
Zone limiting fences a tower crane into the areas it may work and out of those it must avoid, using line, triangle, quadrilateral and circle obstacles up to eight zones a machine. This note explains the shapes and how a site sets them.
Read moreWhen Several Cranes Share One Sky: How Group Anti-Collision Keeps Them Apart
On a site where several tower cranes share one airspace, group anti-collision auto-networks the machines, calculates their relative positions and pre-warns each operator before two jibs can conflict. This note explains how the ZNAO-TG2 builds that picture.
Read moreWhat the Black Box Remembers: The Alarm Log Inspectors and Auditors Ask For
A tower crane black box records load, moment, radius, height, slew, wind and tilt, and logs alarms for audit, inspection and accident back-trace. This note explains what is stored and how an inspector reads the log.
Read moreCharging Pile or Solar Panel: Choosing Power for a Tower Crane Laser Marker
A trolley-mounted laser marker needs power where the trolley lives. This note compares the charging-pile type, with a charging pile and a 12 V ternary lithium pack, and the solar type, with a 20 W panel and a 10 Ah control box.
Read moreFewer Raised Arms, Fewer Misread Calls: How a Laser Landing Marker Backs Up Hand Signals
Hand signals are the backbone of crane communication, but distance and glare can hide them. A green laser landing marker gives the operator and the signalman one shared point on the deck, cutting misread final approaches without replacing the signal.
Read moreWhen the Load Lands Where You Meant It To: A Tower Crane Laser Positioning System Explained
A tower crane laser positioning system mounts on the trolley and projects a green landing point onto the ground, so operator and signalman see the same mark. This note explains what the ZNAQ-JG1 is, how it is set up and what changes on site.
Read moreIn the Philippines, a tower crane is legal only when a test certificate, a certified operator and a permit agree
Philippine crane rules sit in three layers: the 1989 OSHS, DOLE Department Order No. 13 of 1998, and the revised OSH implementing rules effective 16 May 2025. Test certificates, TESDA operator qualifications and permits to operate, explained.
Read moreIn Tajikistan, a crane is regulated as a registered hazardous production facility
Tajikistan’s Law No. 14 of 28 February 2004 treats a crane as equipment inside a registered hazardous production facility. GOST 35321-2025 on overland rail crane tracks, adopted with Tajikstandart’s vote, took effect on 1 January 2026.
Read moreThailand’s crane rulebook was already full. What January 2026 added was a check during the lift.
Thailand’s OSH Act B.E. 2554 (2011) has applied since 16 July 2011, and the B.E. 2564 (2021) crane rules since 31 May 2021. After January 2026 gantry collapses, a 26 May inquiry put crane inspection on a 30-day clock.
Read moreKyrgyzstan runs two crane rulebooks — the Union’s machinery regulation and a national site law
Kyrgyzstan joined the Eurasian Economic Union on 12 August 2015, bringing TR CU 010/2011 into force there. A national law, No. 160 of 2 August 2016, makes a site with permanently installed lifting mechanisms a hazardous facility.
Read moreSingapore’s crane rules were not rewritten — the testing calendar was
Singapore’s Workplace Safety and Health (Operation of Cranes) Regulations 2011 have applied since 10 September 2011. Circular MOM/OSHD/2025-05, effective 12 September 2025, resets the test intervals and drops the post-registration overload test.
Read moreUzbekistan is rebuilding lifting-equipment safety around registration, examination and certificates
Uzbekistan's Cabinet Resolution No. 53 of 12 February 2026 makes technical examination mandatory for cranes and hoists, and Resolution No. 325 of 25 June 2026 re-accredits the expert organisations that issue the conclusions.
Read moreA crane in Kazakhstan runs on two clocks: an EAEU certificate decides what may enter, and a national inspection regime decides what may keep working
TR CU 010/2011 has governed cranes in Kazakhstan since 15 February 2013, and Law No. 196-VIII ZRK of 24 June 2025 rewrote how they are supervised: registration before first operation, 12-month and 3-year inspections, and a one-working-day notice.
Read moreVietnam’s strict-safety machinery list turns a tower crane into a permanent inspection file, not a one-time certificate
Vietnam’s list of machinery needing strict occupational safety management sits in Circular 36/2019/TT-BLĐTBXH, in force since 1 March 2020, with Decree 44/2016/NĐ-CP setting inspection. Cranes and hoists are named, and a 2026 circular changes the dossier.
Read moreIndonesia kept its 2020 lifting rules; in 2026 it rebuilt the inspector who enforces them
Indonesia’s Permenaker No. 8 Tahun 2020, in force since 12 June 2020, sets inspection, testing and licensing rules for lifting and hauling equipment. Permenaker No. 11 Tahun 2026, effective 3 July 2026, rebuilds labour supervision on risk-based checks.
Read moreMalaysia’s tower crane certificates now answer to a workplace statute, not a factory one
Malaysia’s Occupational Safety and Health (Amendment) Act 2022 [Act A1648] and the Factories and Machinery (Repeal) Act 2022 [Act 835] took effect on 1 June 2024, moving crane inspections to a workplace statute. The 15-month cycle and the penalties follow.
Read moreEurope’s machinery overhaul reaches the slings, shackles and software under the hook
The EU Machinery Regulation (EU) 2023/1230 replaces the old Machinery Directive on 20 January 2027, and Regulation (EU) 2026/1744 has since folded AI rules into it. This briefing covers what changes for slings, shackles and software safety functions.
Read moreWhat to Prepare for a Lifting Equipment Brief
A practical checklist for procurement teams specifying lifting attachments for the first time.
Read moreCrane safety rules are moving from the steel to the software
Europe's new machinery regulation puts crane safety software inside conformity assessment from January 2027, while British rules still insist anti-collision aids never replace a safe system of work. What that means if you specify or buy the equipment.
Read moreTechnical documents
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