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China Custom CHINAMFG Manufacture Tower Crane Price Boom Length 50m Luffing Jib Tower Crane

Product Description

Product Description

Tavol Manufacture Tower Crane Price  Boom Length 50m Luffing Jib Tower Crane

D125-5571 10t luffing tower crane is designed by CHINAMFG Cranes Group . 
The performance & technical specification is advanced in China, has reached the international advanced level . 
Except the 10t tower crane , we can supply other capacity tower crane from 4t to 18 t . 
We have more than 30 years production history and more than 10 years of overseas business experience . 
TAVOL brand tower crane have exported to many countries, such as USA, Germany, Brazil, UK, Mexico, Bangladesh, Philippines, Sri Lanka, Vietnam , Maldives, Cambodia, Oman, Saudi Arabia, Sudan, Kenya, Guinea, Georgia, Indonesia, South America etc. 

Product Parameters


Model            D125-5571 Luffing Tower Crane           
Max Load 10 t
Tip load 2.0 t 
Jib length 50 m
Mast 2 *2 *3m , Dismantling Mast
Hoist height according to your demand
Power Input Standard 380V/50HZ/3P.   Can design as site request



>>> Safety Feature for Construction Building Tower Crane

1   Torque limiter it will warns when lifting weights reach to 90% of rated lifting torque.
When reach to 110% of the rated lifting torque, it will limit rising upwards and trolley.
2 Weight limiter Control the maximum lifting capacity.
lifting weight reach to 40% of the rated capacity, limit high-speed lifting;
lifting weight reach to 110% of the rated capacity, limit  the lifting up
3 Height limiter Control the lowest and highest extreme position of lifting hook
4 Slewing limiter Control the extreme turns number of turn left and right
5 Amplitude limiter Control trolley limit position of inward and outward
6 Overload protection If the material is over the capacity, the crane will give a sharp warning for protection itself
7 Emergency brake If the operation staff  encounter some emergency situation, we could start the emergency brake system to protection the related treasure
8 Control Method Room control or remote control to avoid any injury to the operation staff
9 Main lifting motor with thermal protection and currency protection

>>> Main Parts Brand We Use for Tower Crane

Other Capacity Crane We Have

Model Jib Length Max Load Tip Load
QTZ40 4208 42m  4t 0.8 t
4708 47m 4t 0.8 t
4808 48m 4t 0.8 t
QTZ50 5008 50m 4t 0.8 t
5571 50m 4t 1.0 t
QTZ63 5571 50m 5t 1.0 t
5013 50m 5t 1.3 t
5610 56m 6t 1.0 t
QTZ80 5613 56m 6t 1.3 t
6012 60m 6t 1.2 t
6012 60m 8t 1.2 t
QTZ100 6013 60m 8t 1.3 t
QTZ125 6015 60m 8t 1.5 t
6015 60m 10t 1.5 t
QTZ160 6516 65m 10t 1.6 t
QTZ250 7030 70m 12t 3.0 t
QTZ315 7040 70m 18t 4.0 t

Payment Terms

1. T/T
2. L/C
3. Western union


Our Advantages

1. We are manufacturer but also group company, which have more than 10 years of overseas business experience and more than 30 years of experience in designing and fabricate, the quality more steady.
2. All machines sold must be tested before shipment, 100% quality.
3. With CE certification.
4. 7*24 hours technical support by email, telephone or video online.
5. User-friendly English manual for machine using and maintain.
6. Spare parts will be offered for free.
7. Professional design drawing can be provided according to installation site request.
8. All the raw material from Baosteel , Laigang Group etc, guarantee good quality . 
The quality supervision department will casual inspection the raw material through the carbon and sulfur analyzer, Microprocessor-based analyzer, Arc combustion carbon sulfur Analyzer and so on.
9. Using the carbon dioxide arc welding+ argon welding, the welding quality is good and steady. 
10. All the steal structure raw material uses the Q355 Mn steel 
11. The design of cabin and maintenance platform are more humanized . 
12. The balance weight stacks can be changed according to the lifting arm length. It will be suitable for different working environment . 
13. The painting uses the sand blast technique ,it will conform the surface of the steel clean, improve the painting adhesive force .
All the parts will be painted 3 times , 1 time finishing coat and 2 times primer . 
14. Protecting device including the lifting limiter ,slewing limiter, trolley limiter ,weight limiter and moment limiter .
The wire rope used the prevention of breaking and skipping .
The trolley used the prevention of breaking the shaft and falling down . 
15. Using the top brand electric ,the stainless steel distribution box ,aviation plug . 
16. Professional guidance ,installation and training team for tower crane 

Packaging & Shipping

Steel structure in nude or packed by bubble. 

Electric part and easily demand parts packed by high quality plywood box or steel box

After Sales Service

Pre-sale Service

1. We can customize products according to client’s demand.Many styles of products for your choices.
2. High Quality + Factory Price + Quick Response + Reliable Service, is what we trying best to offer you
3. All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service. 
4. We have more than 20 year experience in design and manufacture, we cherish every order from our honor
5. The details technical data and CAD drawing will provide you at first time.

After You Choose us
1. We will count cheapest shipping cost and make invoice to you at once.
2. Test each machine before delivery to ensure plants quality, then send out to you after your payment.
3. Our engineers are available to guide the operators abroad.
4. Strict quality control system, supervision the work to ensure the best crane for you.
5. Strict production line, make sure manufacture the goods on time.
6. Best cooperation forwarder provide the soonest and reliable service foe our goods.

After-sale Service 
1. We are very glad that customer give us some suggestion for price and products.
2. We supply you installation video to assist you to install the crane to help you save the installation cost
3. Send free spare parts within warranty time 
4. Provide Installation manual and operation manual ,electric drawing
5. 24*7 hours on line service 

Company Profile

Tavol Cranes Group is the professional manufacturer for tower crane and construction lift in China .

Our main businesss scope as below:
+ Top Kit Tower Crane,
+  Flat Top Tower Crane,
+  Luffing Tower Crane,
+  Building Hoists, 
+  Gondola/ Suspended Working Platform

Welcome to contact us if any inquiry you have . 
Ms. Kelley 


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After-sales Service: Install Service Avaiable
Warranty: 14 Month
Certification: CE, ISO9001, BV
Condition: New
Maximum Lifting Height: 150-200m
Maximum Lifting Weight: 10t


What are the typical tolerances and quality standards for injection molded parts?

When it comes to injection molded parts, the tolerances and quality standards can vary depending on several factors, including the specific application, industry requirements, and the capabilities of the injection molding process. Here are some general considerations regarding tolerances and quality standards:


The tolerances for injection molded parts typically refer to the allowable deviation from the intended design dimensions. These tolerances are influenced by various factors, including the part geometry, material properties, mold design, and process capabilities. It’s important to note that achieving tighter tolerances often requires more precise tooling, tighter process control, and additional post-processing steps. Here are some common types of tolerances found in injection molding:

1. Dimensional Tolerances:

Dimensional tolerances define the acceptable range of variation for linear dimensions, such as length, width, height, and diameter. The specific tolerances depend on the part’s critical dimensions and functional requirements. Typical dimensional tolerances for injection molded parts can range from +/- 0.05 mm to +/- 0.5 mm or even tighter, depending on the complexity of the part and the process capabilities.

2. Geometric Tolerances:

Geometric tolerances specify the allowable variation in shape, form, and orientation of features on the part. These tolerances are often expressed using symbols and control the relationships between various geometric elements. Common geometric tolerances include flatness, straightness, circularity, concentricity, perpendicularity, and angularity. The specific geometric tolerances depend on the part’s design requirements and the manufacturing capabilities.

3. Surface Finish Tolerances:

Surface finish tolerances define the acceptable variation in the texture, roughness, and appearance of the part’s surfaces. The surface finish requirements are typically specified using roughness parameters, such as Ra (arithmetical average roughness) or Rz (maximum height of the roughness profile). The specific surface finish tolerances depend on the part’s aesthetic requirements, functional needs, and the material being used.

Quality Standards:

In addition to tolerances, injection molded parts are subject to various quality standards that ensure their performance, reliability, and consistency. These standards may be industry-specific or based on international standards organizations. Here are some commonly referenced quality standards for injection molded parts:

1. ISO 9001:

The ISO 9001 standard is a widely recognized quality management system that establishes criteria for the overall quality control and management of an organization. Injection molding companies often seek ISO 9001 certification to demonstrate their commitment to quality and adherence to standardized processes for design, production, and customer satisfaction.

2. ISO 13485:

ISO 13485 is a specific quality management system standard for medical devices. Injection molded parts used in the medical industry must adhere to this standard to ensure they meet the stringent quality requirements for safety, efficacy, and regulatory compliance.

3. Automotive Industry Standards:

The automotive industry has its own set of quality standards, such as ISO/TS 16949 (now IATF 16949), which focuses on the quality management system for automotive suppliers. These standards encompass requirements for product design, development, production, installation, and servicing, ensuring the quality and reliability of injection molded parts used in automobiles.

4. Industry-Specific Standards:

Various industries may have specific quality standards or guidelines that pertain to injection molded parts. For example, the aerospace industry may reference standards like AS9100, while the electronics industry may adhere to standards such as IPC-A-610 for acceptability of electronic assemblies.

It’s important to note that the specific tolerances and quality standards for injection molded parts can vary significantly depending on the application and industry requirements. Design engineers and manufacturers work together to define the appropriate tolerances and quality standards based on the functional requirements, cost considerations, and the capabilities of the injection molding process.

Can you provide guidance on the selection of injection molded materials based on application requirements?

Yes, I can provide guidance on the selection of injection molded materials based on application requirements. The choice of material for injection molding plays a critical role in determining the performance, durability, and functionality of the molded parts. Here’s a detailed explanation of the factors to consider and the guidance for selecting the appropriate material:

1. Mechanical Properties:

Consider the mechanical properties required for the application, such as strength, stiffness, impact resistance, and wear resistance. Different materials have varying mechanical characteristics, and selecting a material with suitable properties is crucial. For example, engineering thermoplastics like ABS, PC, or nylon offer high strength and impact resistance, while materials like PEEK or ULTEM provide exceptional mechanical performance at elevated temperatures.

2. Chemical Resistance:

If the part will be exposed to chemicals, consider the chemical resistance of the material. Some materials, like PVC or PTFE, exhibit excellent resistance to a wide range of chemicals, while others may be susceptible to degradation or swelling. Ensure that the selected material can withstand the specific chemicals it will encounter in the application environment.

3. Thermal Properties:

Evaluate the operating temperature range of the application and choose a material with suitable thermal properties. Materials like PPS, PEEK, or LCP offer excellent heat resistance, while others may have limited temperature capabilities. Consider factors such as the maximum temperature, thermal stability, coefficient of thermal expansion, and heat transfer requirements of the part.

4. Electrical Properties:

For electrical or electronic applications, consider the electrical properties of the material. Materials like PBT or PPS offer good electrical insulation properties, while others may have conductive or dissipative characteristics. Determine the required dielectric strength, electrical conductivity, surface resistivity, and other relevant electrical properties for the application.

5. Environmental Conditions:

Assess the environmental conditions the part will be exposed to, such as humidity, UV exposure, outdoor weathering, or extreme temperatures. Some materials, like ASA or HDPE, have excellent weatherability and UV resistance, while others may degrade or become brittle under harsh conditions. Choose a material that can withstand the specific environmental factors to ensure long-term performance and durability.

6. Regulatory Compliance:

Consider any regulatory requirements or industry standards that the material must meet. Certain applications, such as those in the medical or food industries, may require materials that are FDA-approved or comply with specific certifications. Ensure that the selected material meets the necessary regulatory and safety standards for the intended application.

7. Cost Considerations:

Evaluate the cost implications associated with the material selection. Different materials have varying costs, and the material choice should align with the project budget. Consider not only the material cost per unit but also factors like tooling expenses, production efficiency, and the overall lifecycle cost of the part.

8. Material Availability and Processing:

Check the availability of the material and consider its processability in injection molding. Ensure that the material is readily available from suppliers and suitable for the specific injection molding process parameters, such as melt flow rate, moldability, and compatibility with the chosen molding equipment.

9. Material Testing and Validation:

Perform material testing and validation to ensure that the selected material meets the required specifications and performance criteria. Conduct mechanical, thermal, chemical, and electrical tests to verify the material’s properties and behavior under application-specific conditions.

Consider consulting with material suppliers, engineers, or experts in injection molding to get further guidance and recommendations based on the specific application requirements. They can provide valuable insights into material selection based on their expertise and knowledge of industry standards and best practices.

By carefully considering these factors and guidance, you can select the most appropriate material for injection molding that meets the specific application requirements, ensuring optimal performance, durability, and functionality of the molded parts.

How do injection molded parts compare to other manufacturing methods in terms of cost and efficiency?

Injection molded parts have distinct advantages over other manufacturing methods when it comes to cost and efficiency. The injection molding process offers high efficiency and cost-effectiveness, especially for large-scale production. Here’s a detailed explanation of how injection molded parts compare to other manufacturing methods:

Cost Comparison:

Injection molding can be cost-effective compared to other manufacturing methods for several reasons:

1. Tooling Costs:

Injection molding requires an initial investment in creating molds, which can be costly. However, once the molds are made, they can be used repeatedly for producing a large number of parts, resulting in a lower per-unit cost. The amortized tooling costs make injection molding more cost-effective for high-volume production runs.

2. Material Efficiency:

Injection molding is highly efficient in terms of material usage. The process allows for precise control over the amount of material injected into the mold, minimizing waste. Additionally, excess material from the molding process can be recycled and reused, further reducing material costs compared to methods that generate more significant amounts of waste.

3. Labor Costs:

Injection molding is a highly automated process, requiring minimal labor compared to other manufacturing methods. Once the molds are set up and the process parameters are established, the injection molding machine can run continuously, producing parts with minimal human intervention. This automation reduces labor costs and increases overall efficiency.

Efficiency Comparison:

Injection molded parts offer several advantages in terms of efficiency:

1. Rapid Production Cycle:

Injection molding is a fast manufacturing process, capable of producing parts in a relatively short cycle time. The cycle time depends on factors such as part complexity, material properties, and cooling time. However, compared to other methods such as machining or casting, injection molding can produce multiple parts simultaneously in each cycle, resulting in higher production rates and improved efficiency.

2. High Precision and Consistency:

Injection molding enables the production of parts with high precision and consistency. The molds used in injection molding are designed to provide accurate and repeatable dimensional control. This precision ensures that each part meets the required specifications, reducing the need for additional machining or post-processing operations. The ability to consistently produce precise parts enhances efficiency and reduces time and costs associated with rework or rejected parts.

3. Scalability:

Injection molding is highly scalable, making it suitable for both low-volume and high-volume production. Once the molds are created, the injection molding process can be easily replicated, allowing for efficient production of identical parts. The ability to scale production quickly and efficiently makes injection molding a preferred method for meeting changing market demands.

4. Design Complexity:

Injection molding supports the production of parts with complex geometries and intricate details. The molds can be designed to accommodate undercuts, thin walls, and complex shapes that may be challenging or costly with other manufacturing methods. This flexibility in design allows for the integration of multiple components into a single part, reducing assembly requirements and potential points of failure. The ability to produce complex designs efficiently enhances overall efficiency and functionality.

5. Material Versatility:

Injection molding supports a wide range of thermoplastic materials, providing versatility in material selection based on the desired properties of the final part. Different materials can be chosen to achieve specific characteristics such as strength, flexibility, heat resistance, chemical resistance, or transparency. This material versatility allows for efficient customization and optimization of part performance.

In summary, injection molded parts are cost-effective and efficient compared to many other manufacturing methods. The initial tooling costs are offset by the ability to produce a large number of parts at a lower per-unit cost. The material efficiency, labor automation, rapid production cycle, high precision, scalability, design complexity, and material versatility contribute to the overall cost-effectiveness and efficiency of injection molding. These advantages make injection molding a preferred choice for various industries seeking to produce high-quality parts efficiently and economically.

China Custom CHINAMFG Manufacture Tower Crane Price Boom Length 50m Luffing Jib Tower Crane  China Custom CHINAMFG Manufacture Tower Crane Price Boom Length 50m Luffing Jib Tower Crane
editor by CX 2023-12-28


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