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Product Description

Product Description

Can be customized according to the needs of various trailers, manufacturers direct sales, big discount

 

Detailed Photos

High strength steel, prefabricated protective mesh

 

Wabco chamber, high end nylon tube, leak proof adapter

Webco relay valve, heavy duty thickening mechanical suspension, special plate spring,

 

Product Parameters

Product name 60/80/100/120ton Low bed semi trailer(Can be customized)  
multi-purpose  Transport containers, loaders, tractors, and high rails for bulk cargo(Can be customized)  
Axle 2/3/4 pieces, 13T FUWA/BPW axle  
Wheelbase Can be customized+1310+1310mm,or other
Tyre 12 pieces, 10.00R20 11.00R20 12.00R20  12R22.5(Can be customized) R
Dimensions(LxWxH) 10000 -17000mm x 3000 x 1750mm
Tare weight 10 tons to 12 tons
Axle spacing 1310mm
Rims 8.5-20, 9.0-20
Suspension System Leaf spring suspension / air suspension
Brake System Dual line pneumatic brake system with WABCO emergency relay valve
Main Beam Height 500mm Q345 carbon steel
Side beam 16mm-25mm channel steel(Material is Q235 carbon steel)
Chassis upper 20mm, lower 25mm. Mid web 12mm
Rear Loading Ramps 2 nos, 720 mm width, spring loaded & manually operated with safety chain
Kingpin 2′ or 3.5′ interchangeable,JOST brand
Landing Gear 28 Tons , Two speed manual operation (Jost or FuhuaCan be customized)
Electrical System 1.Voltage: 24v  2. Receptacle: 7 ways (7 wire harness) German standard
Lights and Reflectors Rear light, rear reflector, turn indicative light, side reflector, fog lamp, number plate light
Painting Shot blast to SA 2.5 Standard prior to application of primer, polyurethane top coat. Total DFT not less than 100μm;Any color will be available
Tool Box One tool box with a set of standard trailer tools
Spare Tyre Carrier One piece or 2 pieces
Packing Polish with wax before shipping

Packaging & Shipping

 

1.The trailer is waxed before it is packed to prevent seawater from corroding the trailer surface.

2.We will choose the most suitable transportation method for customers and reduce the transportation costs of customers.

Company Profile

ZheJiang CZPT Special Vehicle Co., Ltd. is located in HangZhou City, ZheJiang Province. We operate in good faith and specialize in R & D, mass production, retail sales of semi-trailer and other transportation equipment. With international advanced and first-class integrated production line, special trailer development team and the combination of Chinese and foreign technology, various types of trailers (such as bulk cement tank trailer, retractable semi-trailer, detachable gooseneck trailer, modular hydraulic trailer, etc.) can be customized. Based on the rich traffic advantages and resources in Central China, letway is committed to providing global customers with high-quality and cost-effective transportation equipment.

 

Our Advantages


Price advantage:

We sell in factories without middlemen, so our price will be better than that of trading companies

Quality advantage:
From the moment the customer places an order, we will be equipped with a professional team. Professional personnel are responsible for the design, production, tracking and transportation. We adopt the principle of responsibility system, and the quality can be guaranteed.

Professional advantages:
We have our own R & D team and design team. Our team has received professional training and good education, and is skilled in using CAD, SW and other drawing tools

Service advantages:
The staff will give the most favorable and accurate quotation to the customer within 2 hours according to the customer’s requirements, make the most appropriate purchase scheme for the customer, and formulate the perfect solution according to the customer’s after-sales demand within 10 hours.

 

 

FAQ

1.What is the delivery date?
It usually takes 15 to 25 days of receiving the deposit.

2.Payment and mode of transportation?
We accept both T/T and D/P .
Bulk, rolling, loading, land transportation, I will actively provide customers with cheaper transportation.

3. If Our Vehicle/Trailer Can Couple With Your Tractor Head ?
– 90% Of The Truck In The Market Can Coupling With Our Vehicle, As Howo, Shacman, Beiben, Volve…
– If Other Brand Truck Head, Please Inform Our Sales Manager Before Order Placing.

4.Can you satisfy my special requirement?
Definitely!We can make the trailers or trucks based on your requirement.

Screw Sizes and Their Uses

Screws have different sizes and features. This article will discuss screw sizes and their uses. There are 2 main types: right-handed and left-handed screw shafts. Each screw features a point that drills into the object. Flat tipped screws, on the other hand, need a pre-drilled hole. These screw sizes are determined by the major and minor diameters. To determine which size of screw you need, measure the diameter of the hole and the screw bolt’s thread depth.

The major diameter of a screw shaft

The major diameter of a screw shaft is the distance from the outer edge of the thread on 1 side to the tip of the other. The minor diameter is the inner smooth part of the screw shaft. The major diameter of a screw is typically between 2 and 16 inches. A screw with a pointy tip has a smaller major diameter than 1 without. In addition, a screw with a larger major diameter will have a wider head and drive.
The thread of a screw is usually characterized by its pitch and angle of engagement. The pitch is the angle formed by the helix of a thread, while the crest forms the surface of the thread corresponding to the major diameter of the screw. The pitch angle is the angle between the gear axis and the pitch surface. Screws without self-locking threads have multiple starts, or helical threads.
The pitch is a crucial component of a screw’s threading system. Pitch is the distance from a given thread point to the corresponding point of the next thread on the same shaft. The pitch line is 1 element of pitch diameter. The pitch line, or lead, is a crucial dimension for the thread of a screw, as it controls the amount of thread that will advance during a single turn.
screwshaft

The pitch diameter of a screw shaft

When choosing the appropriate screw, it is important to know its pitch diameter and pitch line. The pitch line designates the distance between adjacent thread sides. The pitch diameter is also known as the mean area of the screw shaft. Both of these dimensions are important when choosing the correct screw. A screw with a pitch of 1/8 will have a mechanical advantage of 6.3. For more information, consult an application engineer at Roton.
The pitch diameter of a screw shaft is measured as the distance between the crest and the root of the thread. Threads that are too long or too short will not fit together in an assembly. To measure pitch, use a measuring tool with a metric scale. If the pitch is too small, it will cause the screw to loosen or get stuck. Increasing the pitch will prevent this problem. As a result, screw diameter is critical.
The pitch diameter of a screw shaft is measured from the crest of 1 thread to the corresponding point on the next thread. Measurement is made from 1 thread to another, which is then measured using the pitch. Alternatively, the pitch diameter can be approximated by averaging the major and minor diameters. In most cases, the pitch diameter of a screw shaft is equal to the difference between the two.

The thread depth of a screw shaft

Often referred to as the major diameter, the thread depth is the outermost diameter of the screw. To measure the thread depth of a screw, use a steel rule, micrometer, or caliper. In general, the first number in the thread designation indicates the major diameter of the thread. If a section of the screw is worn, the thread depth will be smaller, and vice versa. Therefore, it is good practice to measure the section of the screw that receives the least amount of use.
In screw manufacturing, the thread depth is measured from the crest of the screw to the root. The pitch diameter is halfway between the major and minor diameters. The lead diameter represents the amount of linear distance traveled in 1 revolution. As the lead increases, the load capacity decreases. This measurement is primarily used in the construction of screws. However, it should not be used for precision machines. The thread depth of a screw shaft is essential for achieving accurate screw installation.
To measure the thread depth of a screw shaft, the manufacturer must first determine how much material the thread is exposed to. If the thread is exposed to side loads, it can cause the nut to wedge. Because the nut will be side loaded, its thread flanks will contact the nut. The less clearance between the nut and the screw, the lower the clearance between the nut and the screw. However, if the thread is centralized, there is no risk of the nut wedgeing.
screwshaft

The lead of a screw shaft

Pitch and lead are 2 measurements of a screw’s linear distance per turn. They’re often used interchangeably, but their definitions are not the same. The difference between them lies in the axial distance between adjacent threads. For single-start screws, the pitch is equal to the lead, while the lead of a multi-start screw is greater than the pitch. This difference is often referred to as backlash.
There are 2 ways to calculate the pitch and lead of a screw. For single-start screws, the lead and pitch are equal. Multiple-start screws, on the other hand, have multiple starts. The pitch of a multiple-start screw is the same as its lead, but with 2 or more threads running the length of the screw shaft. A square-thread screw is a better choice in applications requiring high load-bearing capacity and minimal friction losses.
The PV curve defines the safe operating limits of lead screw assemblies. It describes the inverse relationship between contact surface pressure and sliding velocity. As the load increases, the lead screw assembly must slow down in order to prevent irreversible damage from frictional heat. Furthermore, a lead screw assembly with a polymer nut must reduce rpm as the load increases. The more speed, the lower the load capacity. But, the PV factor must be below the maximum allowed value of the material used to make the screw shaft.

The thread angle of a screw shaft

The angle between the axes of a thread and the helix of a thread is called the thread angle. A unified thread has a 60-degree angle in all directions. Screws can have either a tapped hole or a captive screw. The screw pitch is measured in millimeters (mm) and is usually equal to the screw major diameter. In most cases, the thread angle will be equal to 60-degrees.
Screws with different angles have various degrees of thread. Originally, this was a problem because of the inconsistency in the threading. However, Sellers’s thread was easier to manufacture and was soon adopted as a standard throughout the United States. The United States government began to adopt this thread standard in the mid-1800s, and several influential corporations in the railroad industry endorsed it. The resulting standard is called the United States Standard thread, and it became part of the ASA’s Vol. 1 publication.
There are 2 types of screw threads: coarse and fine. The latter is easier to tighten and achieves tension at lower torques. On the other hand, the coarse thread is deeper than the fine one, making it easier to apply torque to the screw. The thread angle of a screw shaft will vary from bolt to bolt, but they will both fit in the same screw. This makes it easier to select the correct screw.
screwshaft

The tapped hole (or nut) into which the screw fits

A screw can be re-threaded without having to replace it altogether. The process is different than that of a standard bolt, because it requires threading and tapping. The size of a screw is typically specified by its major and minor diameters, which is the inside distance between threads. The thread pitch, which is the distance between each thread, is also specified. Thread pitch is often expressed in threads per inch.
Screws and bolts have different thread pitches. A coarse thread has fewer threads per inch and a longer distance between threads. It is therefore larger in diameter and longer than the material it is screwed into. A coarse thread is often designated with an “A” or “B” letter. The latter is generally used in smaller-scale metalworking applications. The class of threading is called a “threaded hole” and is designated by a letter.
A tapped hole is often a complication. There is a wide range of variations between the sizes of threaded holes and nut threads, so the tapped hole is a critical dimension in many applications. However, even if you choose a threaded screw that meets the requisite tolerance, there may be a mismatch in the thread pitch. This can prevent the screw from freely rotating.

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