Product Description
My name is Emma Fu, and I am the sales manager of SPORTRAK TIRE GROUP LIMITED. I have more than 6 years of tire export experience.
It’s my honor to service you. Welcome to inquire. We are a state owned tire factory in China, we produce high quality truck tire, car tire, light truck tire, bus tire, trailer tire, SUV tire, tubes.
SPORTRAK/ SUPERWAY PCR TIRE CAR TIRE
Product Description
A.Vertical deep groove design can provide excellent driving and braking force.
B.The steel cord tire with high density. Good wear-resistant, high traction power. High load capacity.
C.Can be used for mixed road condition.
MOQ: 1*20GP, mixed sizes are allowed
Delivery: Within 10 days
Package: With woven bag or plastic of paper,green,orange,yellow,grey
Payment terms: T/T or L/C at sight.
SPORTRAK/ SUPERWAY brand 245/50ZR20 EXTRA UHP Tire
Pattern View:
| SIZE | LOAD INDEX & SPEED RATING | O.D(MM) | S.W(MM) |
| 24550ZR20 | 102W | 754 | 253 |
1. Our Car Tyre advantages
• Complete certifications show that our tyre quality has reached international standards:
ISO , CCC , DOT , ECE , REACH , EU-LABEL , GCC , SONCAP , SNI , SGS etc.
• Over 10 years’ experience, we are the expert in tyre filed and our brands have gained a high Market awareness.
2. PCR factory with Japan Technology
• Strict quality control from raw material to technology
• Steel Wire : BEKAERT
• Carbon Black: CABOT
• Equipment: Imported from U.S., Germany etc.
· USA spindle room of RJS;
· Cutting machine from Germany KARL EUGEN FISCHER;
3. Competitive price and first-class quality
· Factory price with strict quality control
· 7 – 15 days prompt delivery guaranteed
· International standard export packing: in bulk or plastic belts
4. Our Warranty
· PCR: 3 YEARS WARRANTY
PCR ALL SIZES:
| Studded tire | A/T M/T sizes | SUMMER TIRE SIZES | ||||||
| 175/65R14 | 215/70R16 | 225/65R17 | P205/75R15 | P245/65R17 | LT275/70R18 | 145/70R12 | 165/60R14 | 195/50R15 |
| 185/65R14 | 225/60R16 | 235/65R17 | P215/75R15 | P255/65R17 | P275/55R20 | 155/70R12 | 165/65R13 | 195/55R15 |
| 185/60R15 | 225/65R16 | 245/65R17 | P225/75R15 | P265/65R17 | P275/60R20 | 165/70R12 | 165/65R14 | 185/55R16 |
| 185/65R15 | 235/70R16 | 265/70R17 | P235/75R15 | P265/65R17 | 31×10.50R15LT | 155/65R13 | 165/70R13 | 195/45R16 |
| 195/60R15 | 215/55R17 | 185/75R16C | P265/70R15 | P265/70R17 | 33×12.50R15LT | 155/70R13 | 165/70R14 | 195/50R16 |
| 195/65R15 | 215/60R17 | 235/65R16C | 255/70R15C | P265/70R17 | LT235/85R16 | 155/80R13 | 195/55R16 | 255/65R16 |
| 205/55R16 | 225/45R17 | LT225/75R16 | P215/70R16 | P275/65R17 | LT245/75R16 | 165/65R13 | 205/45ZR16 | 255/70R16 |
| 205/60R16 | 225/50R17 | LT245/75R16 | P215/70R16 | LT235/75R15 | LT265/75R16 | 165/70R13 | 205/50ZR16 | 265/70R16 |
| 215/60R16 | 225/55R17 | LT245/70R17 | P225/70R16 | 31×10.50R15LT | LT285/75R16 | 185/70R13 | 205/55ZR16 | 275/70R16 |
| 215/65R16 | 225/60R17 | LT265/70R17 | P225/70R16 | 215R15C | 35*12.50R17LT | 155/65R14 | 215/55ZR16 | LT225/75R16 |
| ALL/FOUR SEASON TIRE | P235/70R16 | 245/75R15C | 305/70R16LT | 165/60R14 | 225/50ZR16 | LT235/85R16 | ||
| P235/70R16 | LT215/85R16 | 315/75R16LT | 165/65R14 | 225/55ZR16 | LT245/75R16 | |||
| 155/65R13 | 195/60R15 | 215/70R16 | P245/70R16 | LT235/85R16 | 33×12.50R17LT | 205/65R16 | 205/40ZR17 | LT265/75R16 |
| 155/70R13 | 195/65R15 | 225/55R16 | P245/70R16 | LT225/75R16 | 37×12.50R17LT | 215/55R16 | 205/45ZR17 | LT245/75R17 |
| 155/80R13 | 195/55R16 | 205/45R17 | P245/70R16 | LT245/75R16 | 33×12.50R18LT | 165/80R13 | 205/50ZR17 | LT265/70R17 |
| 165/70R13 | 205/55R16 | 205/50R17 | P255/70R16 | LT265/75R16 | 35×12.50R18LT | 175/55R15 | 205/55ZR17 | 215/60R17 |
| 155/65R14 | 205/60R16 | 215/45R17 | P255/70R16 | LT285/75R16 | LT265/70R17 | 175/60R13 | 215/45ZR17 | 215/65R17 |
| 165/60R14 | 215/55R16 | 215/50R17 | 215/70R15C | 185/75R16C | LT285/70R17 | 175/60R15 | 215/50ZR17 | 225/60R17 |
| 165/65R14 | 215/60R16 | 215/55R17 | P265/70R16 | 205R16C | 33×12.50R20LT | 175/65R14 | 215/55ZR17 | 225/65R17 |
| 165/70R14 | 215/65R16 | 215/60R17 | P265/70R16 | LT245/75R17 | 35×12.50R20LT | 175/65R15 | 225/45ZR17 | 235/60R17 |
| 175/65R14 | 225/45R17 | 225/55R17 | P275/70R16 | LT265/70R17 | 35×12.50R22LT | 175/70R13 | 225/50ZR17 | 265/70R17 |
| 175/70R14 | 225/50R17 | 225/60R17 | P235/65R17 | LT275/65R18 | 37×12.50R22LT | 175/70R14 | 225/55ZR17 | 275/65R17 |
| 185/60R14 | 175/65R13 | 225/65R17 | SNOW/WINTER TIRE SIZES | 185/55R15 | 235/45ZR17 | 285/65R17 | ||
| 185/65R14 | 175/70R13 | 235/45R17 | 185/60R14 | 235/50ZR17 | 225/55R18 | |||
| 175/55R15 | 185/55R14 | 235/55R17 | 175/70R13 | 165/70R13 | 175R14C | 185/60R15 | 235/55ZR17 | 225/60R18 |
| 175/60R15 | 185/70R14 | 235/65R17 | 155/65R14 | 195/50R15 | 185R14C | 185/65R14 | 245/40ZR17 | 235/55R18 |
| 175/65R15 | 205/65R15 | 225/40ZR18 | 165/60R14 | 195/55R15 | 145/70R12 | 185/65R15 | 245/45ZR17 | 235/60R18 |
| 185/55R15 | 215/65R15 | 225/45R18 | 165/65R14 | 195/65R15 | 195/60R14 | 185/70R13 | 215/35ZR18 | 235/65R18 |
| 185/60R15 | 195/45R16 | 225/55R18 | 165/70R14 | 195/55R16 | 215/75R15 | 185/70R14 | 215/45ZR18 | 245/60R18 |
| 185/65R15 | 195/50R16 | 235/50R18 | 175/65R14 | 215/55R16 | 195/60R16 | 195/60R14 | 225/40ZR18 | 255/70R18 |
| 195/50R15 | 205/45R16 | 245/40ZR18 | 175/70R14 | 225/55R16 | 215/55R18 | 195/60R15 | 225/45ZR18 | 265/60R18 |
| 195/55R15 | 215/45R16 | 245/45ZR18 | 185/60R14 | 205/50R17 | 225/60R18 | 195/65R15 | 235/40ZR18 | 275/60R18 |
| VAN/C TIRE SIZES | 185/65R14 | 215/50R17 | 265/60R18 | 195/70R14 | 235/45ZR18 | 275/65R18 | ||
| 185/70R14 | 215/55R17 | 285/60R18 | 205/55R16 | 235/50ZR18 | 285/60R18 | |||
| 145R12C | 205/65R16C | 205/75R15C | 195/70R14 | 225/45R17 | 245/55R19 | 205/60R14 | 245/40ZR18 | 255/55R18 |
| 155R12C | 205/75R16C | 155R12C | 175/65R15 | 225/50R17 | 245/45R20 | 205/60R15 | 245/45ZR18 | 255/60R18 |
| 155R13C | 215/65R16C | 155R13C | 185/55R15 | 225/55R17 | 245/50R20 | 205/60R16 | 255/35ZR18 | 285/45R19 |
| 155R13C | 215/75R16C | 165/70R14C | 185/60R15 | 235/45R17 | 255/55R20 | 205/65R15 | 255/40ZR18 | 225/55R19 |
| 165/70R13C | 225/65R16C | 175/65R14C | 185/65R15 | 235/55R17 | 285/50R20 | 205/70R14 | 255/45ZR18 | 255/50R19 |
| 165R13C | 235/65R16C | 175/75R16C | 195/60R15 | 225/40R18 | 275/45R21 | 205/70R15 | 225/35ZR19 | 255/55R19 |
| 165/70R14C | P195/75R14 | 185/75R16C | 195/70R15C | 225/45R18 | 235/65R16 | 215/60R15 | 235/35ZR19 | 275/55R20 |
| 175/65R14C | P205/75R14 | 185R14C | 205/65R15 | 235/45R18 | 235/65R16C | 215/65R15 | 235/55R19 | 295/40ZR21 |
| 175R14C | P205/70R15 | 195/65R16C | 215/65R15C | 245/45R18 | 235/70R16 | 215/65R16 | 245/35ZR19 | 265/35R22 |
| 175/70R14C | P205/75R15 | 195/70R15C | 215/70R15C | 235/55R18 | 245/70R16 | 215/70R14 | 245/40ZR19 | 285/35R22 |
| 185R14C | P215/75R15 | 195/75R16C | 215/70R15 | 235/60R18 | LT245/75R16 | 215/70R15 | 245/45ZR19 | 305/35R20 |
| 195R14C | P225/70R15 | 195R14C | 225/70R15C | 245/60R18 | 265/70R16 | 225/60R16 | 255/35ZR19 | 315/35R20 |
| 205R14C | P225/75R15 | 205/65R16C | 185/75R16C | 255/55R18 | 215/60R17 | 225/70R15 | 245/55R19 | 305/40R22 |
| 195R15C | P235/75R15 | 205/70R15C | 195/65R16C | 245/45R19 | 215/65R17 | 235/60R16 | 225/35ZR20 | 305/45R22 |
| 195/70R15C | 155R13C | 205/75R16C | 195/75R16C | 255/50R19 | 225/60R17 | 275/60R20 | 265/50R20 | 295/35R24 |
| 205/70R15C | 155R13C | 215/65R15C | 205/55R16 | 235/55R19 | 225/65R17 | 285/50R20 | 275/40R20 | 305/35R24 |
| 215/65R15C | 165R13C | 215/65R16C | 205/60R16 | 255/55R19 | 235/65R17 | 295/35ZR21 | 275/45R20 | 255/30ZR24 |
| 215/70R15C | 165R13C | 215/70R15C | 205/65R16C | 275/40R20 | 245/65R17 | 225/60R16 | 275/55R20 | 225/65R17 |
| 225/70R15C | 185R14C | 215/75R16C | 215/60R16 | 275/45R20 | 265/65R17 | 225/65R16C | 275/60R20 | 225/55R17 |
| 175/75R16C | 195R14C | 225/65R16C | 215/65R16 | 225/65R16 | 265/70R17 | 205/60R16 | 255/55R19 | 235/65R17 |
| 185/75R16C | 205/75R14C | 225/70R15C | 215/65R16C | 225/70R16 | LT245/70R17 | 205/65R16C | 275/40R20 | 245/65R17 |
| 195/65R16C | 185R15C | 235/65R16C | 215/70R16 | LT225/75R16 | LT265/70R17 | 215/60R16 | 275/45R20 | 265/65R17 |
| 195/75R16C | 195R15C | 215/70R16C | 215/75R16C | LT275/70R18 | LT275/65R18 | 215/65R16 | 225/65R16 | 265/70R17 |
TBR ALL SIZES:
| Tubeless Tyre | Tube Tyre | ||||
| R22.5 | R24.5 | R17.5 | R19.5 | 6.50R16 | |
| 9.5R22.5 | 255/70R22.5 | 11R24.5 | 8R17.5 | 225/70R19.5 | 700R16 |
| 10R22.5 | 275/70R22.5 | 285/75R24.5 | 9.5R17.5 | 245/70R19.5 | 750R16 |
| 11R22.5 | 275/80R22.5 | 215/75R17.5 | 265/70R19.5 | 825R16 | |
| 12R22.5 | 295/60R22.5 | 235/75R17.5 | 445/45R19.5 | 825R20 | |
| 13R22.5 | 295/75R22.5 | 900R20 | |||
| 315/60R22.5 | 295/80R22.5 | 1000R20 | |||
| 315/70R22.5 | 385/55R22.5 | 1100R20 | |||
| 315/80R22.5 | 1200R20 | ||||
| 385/65R22.5 | 1200R24 | ||||
| 425/65R22.5 | 1400R20 | ||||
| 445/65R22.5 | 365/80R20 | ||||
Company Profile
Sportrak Tire Group(S.T.G) is an integrated corporation
specializing in developing, manufacturing & selling tires;ZheJiang Energy Group is our headquarter which is among the world TOP 500.
To deal with the situation of limited coal resources that used to be our main producing,now we are prioritizing the development of rubber industry with continued investment and acquisition of 2 large scale tire factories, 1 is a all-steel truck tire factory
(referred to as TBR factory) whose annual output is 3.6 million sets, the other is a semi-steel tire factory (referred to as PCR factory) with 20 million sets annual output. Meanwhile we have invested and built a rubber processing plant in Thailand with an annual output of 200,000 tons so as to secure the stable supply of the rubber raw material and its quality.
With the support of great power and technology, our TBR factory has built the national tire laboratory certified by CNAS and also owned the world advanced and China leading disposable mixing method, which has obtained the national technology award. We also have the advanced VMI molding machine and the professional producing and testing equipments which are imported from Europe and America, moreover we’ve adopted tZheJiang o technology in producing and processing.
Each tire has to go through hundreds of processing procedures before completed and put into the market since the very beginning of raw materials. Currently we have passed the TS16949, DOT, SONCAP ,E-Mark, INMETRO,GCC ,SNI and the ISO9001 quality system certification.The whole set of the tire technology we introduced and adopted is top of Europe; the main members of the technical team have working experience in well-known tire companies both at home and abroad and they are professional in construction design, formulation design and factory management. SPORTRAK tire group takes SPORTRAK as leading brand to explore the domestic and foreign markets and we are engaged in production of green, environmental-protective and energy-saving tires. So far the product series range from entire series to multi-pattern and economical to high-performance, which accounted for 40% and 90% of our products are for export.
Exhibition
The exhibitions our company participates in are as follows:
China International Tire Expo
HangZhou Tire Show
Canton Fair
North American Tire & Retread Expo
Automechanika Dubai
Latin Tyre Expo
Tyrexpo Asia
Equip Auto Algeria
Recommend Products
We can provide Truck tire, Bus tire, Trailer tire, Light truck tire, Car tire, OTR, Butyl Tubes to you.
Brand: SPORTRAK, SUPERWAY
Contact me: Emma Fu
Packaging & Shipping
We can provide green/ Orange/ Yellow/ Silver different packages. We will meet the packaging needs of different customers. If customers need special stickers, we will customize and print them.
1. How to ship?
1). FOB,CIF terms, we will effect shipment and furnish the master bill of lading issued by shipping line.
2). FOB items, buyer should nominated shipping line or shipping agency in China.
3). Shipped by train , we will discuss with buyer to get agreement on details.
2. How about the quality?
1). Best quality tires.
2). Best Parterns: Rubber from Malaysia & Thailand top-quality Natural and synthetic rubber.
3. How about the delivery?
If the products you need are all stock available, we will arrange shipment within 3-5 days, once receiving your down payment. If the products you need is out of stock, we will arrange production asap, normally, the shipment will be effected within 15-30 days.
4. How about the warranty?
Any tire with a complete serial number is covered against defects in workmanship and material for 2 YEARS from the date of purchase. After that time, the warranty is terminated.
Notice: The tire age calculated from the date of purchase, If the proof of purchase is not available, the tire date of manufacture will be applied.
Promotion Gifts
Support for Advertising and Consumer Promotions: T-Shirts, Banners, flags, catalogs, paintings, notebooks, clocks, hats, gloves as well as other kinds of advertising support.
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Contact Information
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.
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.
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.
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.
