20+Years Specialized Manufacturer Of Tower Cranes And Construction Hoists

Frequently Asked Questions

Read our detailed comparison guide for more information.

What is the maximum lifting height of your tower cranes?

Our tower cranes can reach maximum freestanding heights of 40-60 meters. With wall ties or climbing systems, the lifting height can be extended up to 200+ meters depending on the model and project requirements. Contact our engineering team for customized height solutions.

What is the maximum load capacity?

Our tower crane capacities range from 6 to 20 tons maximum load, with tip loads from 1.2 to 1.8 tons depending on the model. For specific model specifications, please visit our product pages or contact us directly.

Can GKZG customize tower cranes for specific project requirements?

Yes. Our R&D team with 20+ years of average experience can customize tower cranes according to your project specifications, including special jib lengths, lifting capacities, climbing systems, and voltage requirements. OEM and ODM services are available.

Construction Hoists

What models of construction hoists does GKZG offer?

We offer two main models:

SC200/200 Construction Hoist — Twin cage design, 2000kg capacity per cage, maximum lifting speed 63 m/min. Ideal for medium to large construction projects.

SC100/100 Construction Hoist — Twin cage design, 1000kg capacity per cage. A cost-effective solution for small to medium projects.

We also offer intelligent construction hoist models (SC200/200ZN) with automatic call systems and door interlock features.

What safety features do your construction hoists have?

All GKZG construction hoists are equipped with:

Anti-fall safety device (tested and certified)
Overload protection system
Door interlock safety system
Upper and lower limit switches
Emergency stop button
Buffer devices at top and bottom
Variable frequency control for smooth start/stop

What is the maximum lifting height of your construction hoists?

Our standard construction hoists can reach up to 250 meters. For ultra-high-rise projects, customized solutions are available to extend the height further.

Can construction hoists carry both passengers and materials?

Yes. Our SC200 construction hoists are designed to carry both passengers and materials. Each cage has a rated capacity clearly marked. Safety devices ensure the hoist will not operate when overloaded.

What is the difference between SC200/200 and SC100/100?

The main difference is the load capacity per cage:

SC200/200: 2000kg per cage — suited for large projects with heavy material transport needs
SC100/100: 1000kg per cage — more economical for smaller projects

Both models share the same safety features, variable frequency control, and modular design. See our detailed comparison guide for more information.

Spare Parts

Do you supply spare parts for tower cranes and construction hoists?

Yes. We supply a full range of spare parts for both our own equipment and other brands, including:

Mast sections (standard sections)
Jib sections
Counterweights
Hoisting mechanisms
Trolley mechanisms
Slewing mechanisms
Safety devices
Electrical components
Cabin and control systems

Are spare parts available for immediate shipment?

Common spare parts such as mast sections, counterweights, and electrical components are typically in stock and can be shipped within 7-10 days. Specialized parts may require 15-30 days for production. Contact us with your specific requirements for accurate lead times.

Can I order spare parts for non-GKZG equipment?

Yes. Many of our spare parts are compatible with other tower crane and construction hoist brands. Please provide us with the equipment model, part number or dimensions, and we will confirm compatibility and pricing.

Ordering & Pricing

How do I get a quotation?

You can request a quotation through the following methods:

Email: ann.lin@gkzgtowercrane.com
WhatsApp: +86 19377161135
Website: Fill out the contact form at www.gkzgtowercrane.com

To receive an accurate quote, please provide:

Product model or specifications (capacity, radius, height)
Quantity required
Destination country/port (for CIF pricing)
Any special requirements (voltage, certifications, custom dimensions)

We typically respond within 24 hours.

What is the minimum order quantity (MOQ)?

Our MOQ is 1 unit. Whether you need a single tower crane for a specific project or multiple units for a large development, we can accommodate your order.

What are your payment terms?

Standard payment terms:

T/T (Telegraphic Transfer) : 30% deposit, 70% before shipment
L/C (Letter of Credit) : Available for orders above $50,000
Other terms: Negotiable for long-term partners and large orders

What is your delivery time?

In-stock items: 7-10 days after deposit payment
Standard production: 15-30 days after deposit payment
Custom orders: 30-45 days depending on specifications

Delivery time may vary based on order volume and production schedule. We will provide an estimated delivery date with your quotation.

Can I visit the factory before placing an order?

Absolutely. We warmly welcome factory visits. You can inspect our production lines, quality control processes, and finished products in person. We can also arrange hotel and transportation assistance in Nanning. Please contact us to schedule your visit.

Shipping & Logistics

How are tower cranes and construction hoists shipped?

Due to the large size of our equipment, products are typically shipped as breakbulk cargo or in flat-rack containers. Smaller components and spare parts can be shipped in standard containers. We handle all export documentation and coordinate with reliable shipping companies.

What is the shipping cost?

Shipping cost depends on:

Product model and quantity
Destination port
Shipping method (FCL, flat-rack, or breakbulk)
Current freight rates

We provide both FOB (Nanning/Guangzhou) and CIF pricing. Contact us with your destination port for a shipping estimate.

What documents do you provide for customs clearance?

We provide all necessary export documents:

Commercial Invoice
Packing List
Bill of Lading
Certificate of Origin
CE Certificate
ISO 9001 Certificate
Test Reports
Operation Manual

Additional documents can be provided upon request to meet your country's import requirements.

Which countries do you export to?

We have exported to over 50 countries, including Turkey, Indonesia, Philippines, Vietnam, Kazakhstan, Uzbekistan, Russia, UAE, Saudi Arabia, India, Brazil, and many more. We have experience handling various import regulations and can assist with documentation for your specific market.

Installation & After-Sales

Do you provide installation service?

Yes. We offer professional installation services with our experienced engineering team. Installation options include:

On-site installation: Our engineers travel to your project site for installation and commissioning
Remote guidance: Video call support for your local installation team
Installation manual: Detailed step-by-step manual with every shipment

How long does installation take?

Typical installation times:

Flat-top tower crane: 2-3 days
Hammerhead tower crane: 3-5 days
Construction hoist: 1-2 days

Actual time depends on crane model, height, and site conditions.

What warranty do you offer?

We provide a 12-month warranty from the date of delivery, covering manufacturing defects in materials and workmanship. Warranty does not cover damage caused by improper operation, unauthorized modification, or normal wear and tear.

What after-sales support do you provide?

Our after-sales support includes:

24/7 WhatsApp/Email support for technical questions
Spare parts supply with fast delivery
On-site service for major issues (engineers dispatched within 48 hours)
Video troubleshooting for quick problem resolution
Regular maintenance guidance to extend equipment life
Operator training available upon request

Do you provide operator training?

Yes. We offer operator training either on-site during installation or through video sessions. Training covers:

Safe operation procedures
Daily inspection checklist
Emergency protocols
Basic troubleshooting
Maintenance schedule

Still Have Questions?

We're here to help. Contact our team for any questions not covered above.

📧 Email: ann.lin@gkzgtowercrane.com

📱 WhatsApp: +86 19377161135

🌐 Websitegkzgtowercrane.com

Lift Higher. Build Stronger.

Everything you need to know about GKZG tower cranes, construction hoists, and working with us.

About GKZG

Is GKZG a trading company or a manufacturer?

GKZG (Guangxi Gongkai Heavy Industry Manufacturing Co., Ltd.) is a direct manufacturer, not a trading company. We are a high-tech enterprise integrating R&D, production, sales and service of tower cranes and construction hoists. Our 60,000㎡ manufacturing facility is located in Nanning, Guangxi, China. You are welcome to visit our factory at any time.

How long has GKZG been in business?

GKZG was established in 2005. With over 20 years of experience, we have become a trusted manufacturer of tower cranes and construction hoists, serving customers in over 50 countries worldwide.

What certifications do your products have?

All our tower cranes and construction hoists are CE certified and ISO 9001 certified. We also hold various national certifications and comply with international quality standards. Certificate copies are available upon request.

Tower Cranes

What types of tower cranes does GKZG manufacture?

We manufacture two main types of tower cranes:

QTZP Flat-Top (Topless) Tower Cranes — Feature a compact design without the A-frame structure. Ideal for multi-crane job sites, urban construction, and projects with height restrictions. Models include QTZP6518 (65m radius, 10t capacity) and more.

QTZ Hammerhead Tower Cranes — Feature the classic A-frame design with high load capacity and stability. Suitable for large-scale construction projects requiring heavy lifting at long radii. Models include QTZ80 (55m radius, 8t capacity) and more.

What is the difference between flat-top and hammerhead tower cranes?

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Contact Us

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