Product Description
Quick Details
Place of Origin: China (Mainland) Brand Name: XIHU (WEST LAKE) DIS.
Type: Solid/ hollow / self drilling Product Name: FRP Rebar
Name: High Modulus CZPT frp rebar Category: hollow grouting or solid anchor bolt
Application: Construction , Coal Mine, Tunnel, Metro, slope, foundation pit, etc.
Model Number: FRP glass full screw resin bolt Technique: Pultrusion winding
Surface treatment: Thread ,Anti-static/ sand-coated /customize Feature: Light Weight
Dimensions: 4-55mm /customizable Material: Fiberglass &Resin
Chemical compositon: Fiberglass & unsaturated resin / expoxy Rod density: 1.6 – 2.1g / m³
Color: Black\white\yellow\red\green Blue\Grey or Customized Length: 1-12M or Customized
Thread: Left or Right Customized Ultimate Strain: 2%
Supply Ability: 3000 Meter/Meters per Day Anti static: 3*10000000 Ω
Tensile strength: >600MPa E-modulus: 40GPa .
Shear strength: 150MPa Certificate: ISO9001-2000,GB/T19001-2008
Fiberglass Rebar adopt glass fiber as reinforced materials and polyester resin as basic materials, through Pulled by specific traction machine, be solidified glass fiber reinforced plastic rod body with full thread under high pressure and high temperature by preformed matched die . It is made up of fiberglass anchor rod plus resin anchoring agent, tray and nut.
The Solid Bolt is used in Mining, Tunneling and Civil Engineering widely. It provides more possibilities as an alternative to metal. The GFRP Solid Bolt is manufactured with high quality GFRP material(Glassfiber Reinforced Polymer). The GFRP Solid Bolt have a high tensile load and bearing capacity with accessories, but the weight is only 1 quarter of metal product.
Applications
Fiber glass rebar, FRP rebar, GFRP rebar, CZPT rebar,reinforcing bar with diameter from 4mm to 55mm.manufactures CZPT Rebars by combining the pultrusion process and an in-line winding & coating process for the outside sand surface. As compared to con-ventional steel rebars, CZPT rebars should be a suitable alternative to steel reinforcing in:
·Architectural Concrete: cast stone, architectural cladding, balusters, column facades, window lentils, architectural precast elements, hand railing, and statuary and fountains, etc.
·Concrete exposed to de-icing salts in: bridge decks, railroad grade crossings, median barriers, parking garage elements, and salt storage facilities, etc.
Concrete exposed to marine salts in: seawalls, water breaks, buildings & structures near waterfront, CZPT operations, and floating marine docks, etc.
·Applications Subjected to Other Corrosive Agents: Wastewater treatment plants; petrochemical plants; pulp/paper mills; liquid gas plants; pipelines / tanks for fossil fuel; cooling towers; chimneys; mining operations of various types; nuclear power and dump plants.
·Applications Requiring Low Electric Conductivity or Electromagnetic Neutrality: Aluminum and copper smelting plants; manholes for electrical and telephone communication equipment; bases for transmission / telecommunication towers; airport control towers; magnetic resonance imaging in hospitals; railroad crossing sites, and specialized military structures.
·Tunneling / Boring Applications Requiring Reinforcement of Temporary Concrete Structures: Structures including mining walls; underground rapid transit structures and underground vertical shafts.
·Weight Sensitive Structures: Concrete construction in areas of poor load bearing soil conditions, remote geographical locations, sensitive environmental areas, or active seismic sites posing special issues that the use of lightweight reinforcement will solve.
·Thermally Sensitive Applications: Apartment patio decks; thermally insulated concrete housing and basements; thermally heated floors and conditioning rooms.
1. Mining support
2. Face bolting
3. Soil nail
4. Slope stabilization
5. Permanent application
6. Temporary support
7. Subway tunnel
8. Building construction
9. Seawall damming
10. Rock supporting
11. foundation pit wall
12. Port of foundation pit
13. Roadway support
14.Tunnel construction, etc.
Advantages:
1. All-thread (stronger bonding with the grouting material)
2. Low weight (1/4 weight of steel anchor bolt)
3. High durability ( unaffeced by acid rain, salt water, and most chemicals)
4. Strong adhesion and anchorage force
5. High corrosion resistance , anti-static, High rotproofness
6. High torque resistance
7. 100+ years service life
8. Easy handling due to low weight
9. Fire retardant
10. Impact resistant
11. Nonconductive and thermal insulation
12. Non-magnetic electromagnetic transparency
13. Dimensional stability, Bright color
14. Low-maintenance
15. Cuttability, easy cutting
16. High torsion resistance
17. Anti-static coating (optionally)
18. Long service life
19. High tensile load
20. Deformation patterns are the same as with steel
21. Coefficient of thermal expansion more similar to concrete than that of steel
22. Direct production costs lower than similar steel bolt
23. Strongly adapt to the environment, and no emmiting the electromagnetic wave
FRP Rebar Other Features:
Non-flammable: It is non-flammable and has high thermal insulation;
Cutability : It avoids damages to cutter heads, and does not delay excavation
Save cost : Use this material as reinforcing bars for road and bridge, could reduce Secondary repair cost.
Accessory products
1. Anchor bolt : the important construction of the assembly, plays a major role in the anchor and
support.
2. The head of the anchor drill: barb can be bolt positioning in the drilled holes, the middle rod body
good.
3. Coupling: easy to manage, unlimited application range.
4. Anchor plate : bear greater stress of surrounding rock.
5. Nut: the surrounding rock stress concentrated on the pad.
6. GFRP Plate, GFRP Nut , GFRP Coupler, Anchor Drill Bit, steel Nut, Steel coupler, steel plate, other types are available as requested
7. Rebar : the important construction of the assembly, plays a major role in the anchor and support.
8. The head of the anchor drill: barb can be bolt positioning in the drilled holes, the middle rod body good.
9. Coupling: easy to manage, unlimited application range.
10. Anchor plate : bear greater stress of surrounding rock.
11. Nut: the surrounding rock stress concentrated on the pad.
Glass reinforced plastic anchor rod with circular arc tooth profile FRP nut thread suit,
glass fiber reinforced plastic nut near 1 end of the glass fiber reinforced plastic pallet
stretch narrow neck formation, glass fiber reinforced plastic tray set it on the neck of the glass fiber reinforced plastic nut, glass reinforced plastic anchor rod in the middle of the paragraph to the polished rod structure. The utility model tensile, shear and torsion strength is strong, the production cost is low, the supporting effect is good, can be applied to all have the special circumstances of flammable and explosive.
Technical Data
| FRP Rock Bolt Test Unit | MGSL18 | NGSL20 | MGSL22 | MGSL24 | MGSL27 | |||
| Rod | Surface | Uniform appearance, no bubble and flaw | ||||||
| Nominal Diameter/mm | 18 | 20 | 22 | 24 | 27 | |||
| Tensile load/KN | 160 | 210 | 250 | 280 | 350 | |||
| Tensile Strength/MPa | 600 | 600 | 600 | 600 | 600 | |||
| Shearing strength/MPa | 150 | 150 | 150 | 150 | 150 | |||
| Torsion/Nm | 45 | 70 | 100 | 150 | 200 | |||
| Antistatic | 3*107 | 3*107 | 3*107 | 3*107 | 3*107 | |||
| Flame Resistance |
Flaming |
s | ≤6 | ≤6 | ≤6 | ≤6 | ≤6 | |
| s | ≤2 | ≤2 | ≤2 | ≤2 | ≤2 | |||
| Flaming burning |
s | ≤60 | ≤60 | ≤60 | ≤60 | ≤60 | ||
| s | ≤12 | ≤12 | ≤12 | ≤12 | ≤12 | |||
| Plate | Plate load strength/kN | 70 | 80 | 90 | 100 | 110 | ||
| Central diameter/mm | 28±1 | 28±1 | 28±1 | 28±1 | 28±1 | |||
| Nut | Nut load strength/kN | 70 | 80 | 90 | 100 | 110 | ||
FRP bolts/Fiber reinforced plastics bolts/GFRP Anchor Rock Bolts Parameter
| Unit | Hollow Rock bolt | Self-drilling Rock bolt | |||||
| Diameter | mm | 12/25 | 12/28 | 32/15 | 12/25 | 12/28 | 32/15 |
| External | mm | 25 | 28 | 32 | 25 | 28 | 32 |
| cross section | mm^2 | 345 | 450 | 563 | 345 | 450 | 563 |
| Thread distance | mm | 10 | 10 | 10 | 12.7 | 12.7 | 12.7 |
| Thread direction | right | right | right | left | left | left | |
| Tensile Load | kN | 230 | 300 | 380 | 250 | 330 | 400 |
| Tensile strength | Mpa | 650 | 650 | 650 | 650 | 650 | 650 |
| Torsion | Nm | 80 | 110 | 200 | 120 | 200 | 250 |
| Shear strength | MPa | 150 | 150 | 150 | 150 | 150 | 150 |
| Elongation | % | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 | 2.5 |
| E-modulus | Gpa | 40 | 40 | 40 | 40 | 40 | 40 |
| weight | g/m | 642 | 896 | 1156 | 642 | 896 | 1156 |
FRP rock bolt equipment
1. Productive technology: full thread FRP rock bolt body once molding
2. Production speed: fast speed, can produce ≥1.5 M per minute
3. Rod body torsion: big torsion, different rod body the torsion can be as high as 60NM-160NM
4. Rod body and nut cooperate closely, the coverall performance is good
5. Big bearing capacity, tray and nut is patented product, the maximum bearing capacity can reach more than 150KN
6. Long production time: it can continuously all day long production, trouble-free
7. Formula science, save material, the product quality is stable
8. Equipment performance in the domestic similar products leading level, simple operation, easy to control, lifelong technical
Method of application for FRP rock bolt
After the roofbolter finished drilling, remove the drill pipe, make the six-party of rock bolt installation machine insert jumbolter drill pipe connection, then make the lever genus part of compression nut insert the rock bolt installation machine, make anchoring agent into the rock bolt holes, then use the rock bolt bracing anchoring agent, at this time do propulsion leg movement, drilling machine motor not rotating, anchoring agent will be sent to the bottom of the hole, at this point to start drilling machine motor rotating, rotating rock bolt to stir anchoring agent, when the FRP rock bolt reached the bottom of the hole, stop the machine, drilling machine fast rotating to stirring anchoring agent, stirring time is set time of anchoring agent (usually 10 s ~ 15 s ), close the drilling machine, stop rotating, according to the anchoring agent curing time, general stop 30 s ~ 45 s, after anchoring agent curing, ant then make drilling machine to start rotating, screw up the nut for bottom of rock bolt, at this time drilling machine motor stop rotating, rock bolt install end
Safety matters need attention
1. When installation the rock bolt, not allowed holding the rock bolt, lest produce an accident
2. Finished the rock bolt, when the drilling machine drops, can’t make the hand on the gas leg, prevent hurting hands
3. When use the jumbolter to installation tray and nut, must master the use of the drilling machine and anchoring agent, when install the nut must immediately stop the machine, otherwise it will damage FRP bolt
4. Please use the resin bolt anchoring agent that complies with safety srandards
5. Transportation store
6. In the process of product transportation shall not be cast and throw.
7. The rod body should be stored in a cool and dry place, rod body storage time no more than 1 year.
8. End of the anchoring can not contaminated with oil, rod body tail thread shall not damage
Technical parameters of the product
| Diameter (mm) |
Length (mm) |
Pallet dimension (mm) |
Standard value of tensile strength(MPa) | Ultimate load of the bolt (KN) |
Bearing capacity of end connection and whorl (KN) | Bolt torque (N.m) |
| 16 | 1200~1800 | 120×120×6 | ≥300 | 80 | ≥50 | ≥40 |
| 18 | 1200~2000 | 120×120×10 | ≥300 | 100 | ≥60 | ≥40 |
| 20 | 1200~3000 | 140x140x8 150×150×8 |
≥300 | 120 | ≥70 | ≥40 |
| 22 | 1600~3000 | 150×150×10 170x 170x 10 |
≥300 | 140 | ≥80 | ≥40 |
| 24 | 1800~3000 | 150×150×10 | ≥300 | 160 | ≥90 | ≥40 |
Hollow grouting bolt characteristics
1. The function of bolt and grouting pipe is combined, when grouting, it is grouting pipe, after grouting,
no need to dial out to become a bolt.
2. The hollow design enables the anchor rod to realize the grouting pipe function, avoids the mortar
loss which the traditional construction craft pipe grouting causes.
3. Grouting full, and can realize the pressure grouting, improve the quality of the project.
4. Because of the role of accessories, the middle of the rod is very good, mortar can anchor the whole
body wrapped, to avoid the risk of corrosion, to achieve long-term support purposes.
5. Convenient installation, without on-site processing of thread, you can easily install the plate, nut.
6. Combined with the special bolt grouting pump and grouting technology, it is the anchor system
which has solved many problems of traditional anchor support at home.
Technical Index of Fiberglass Rebar
| Diameter(mm) | Cross Section(mm2) | Density(g/cm3) | Weight(g/m) | Ultimate Tensile Strength(MPa) | Elastic Modulus(GPa) |
| 3 | 7 | 2.2 | 18 | 1900 | >40 |
| 4 | 12 | 2.2 | 32 | 1500 | >40 |
| 6 | 28 | 2.2 | 51 | 1280 | >40 |
| 8 | 50 | 2.2 | 98 | 1080 | >40 |
| 10 | 73 | 2.2 | 150 | 980 | >40 |
| 12 | 103 | 2.1 | 210 | 870 | >40 |
| 14 | 134 | 2.1 | 275 | 764 | >40 |
| 16 | 180 | 2.1 | 388 | 752 | >40 |
| 18 | 248 | 2.1 | 485 | 744 | >40 |
| 20 | 278 | 2.1 | 570 | 716 | >40 |
| 22 | 355 | 2.1 | 700 | 695 | >40 |
| 25 | 478 | 2.1 | 970 | 675 | >40 |
| 28 | 590 | 2.1 | 1195 | 702 | >40 |
| 30 | 671 | 2.1 | 1350 | 637 | >40 |
| 32 | 740 | 2.1 | 1520 | 626 | >40 |
| 34 | 857 | 2.1 | 1800 | 595 | >40 |
| 36 | 961 | 2.1 | 2044 | 575 | >40 |
| 40 | 1190 | 2.1 | 2380 | 509 | >40 |
Technique chart:
Packaging & Delivery
Packaging: Bundle with pallet, Bolts packed in bundles and accessories packed in cartons.
Packed with steel wires or other way as customers requirement.
Delivery Time: within 20 days
Lead Time ::within 20 days
Our Services
As 1 of the leading suppliers of pultrusion fiberglass reinforced polymer CZPT products, we can provide you FRP tubes, Channel, I-beam, angle, Rebar, rods,Garden stakes, gratings.
Customized shape service is available from us, just send us CAD drawing or contact us direatly. For moulds, TT 100% before making; for products, TT 30% in advance, 70% balance payment on receiving bill of lading by Email or before delivery.
Researches and development team by knowing the importance of the FRP usage in industry and construction , have successfully conducting different researches and studies projects.
Design and engineering services has been given idea from customers, and make out the thing you imaged. Specially developing on new machinary.
Istallation and construction team is experienced with installation, commissioning and training service at cutomer’s factory. In this way, the customer is CZPT to handle management of equipment themsleves soon.
Mantiance service is applied when customer cann’t solve problem themselves. Mainly at equipment, software, tools…etc.
Technical support is the most importance in production. as long as frp developing, new and advanced process, material, equipments appeared. We are giving the eyes on the world frp relatived news and supply customer advanced service.
FAQ
Q: Are you a trading company or factory?
A: our factory is a FRP manufacturer in China.
Q: Can you factory customize the machine for clients?
A: yes, we can.
Q: what are you payment terms?
A: Normally, 50% as the deposit first by T/T, the rest 50% will be paid before shipping by T/T.
Q: How about after-sales service?
A: 1 year free warranty, Lifetime technical service support.
Please Contact Us
Miss: lydia
http://chinainsulation
Types of Screw Shafts
Screw shafts come in various types and sizes. These types include fully threaded, Lead, and Acme screws. Let’s explore these types in more detail. What type of screw shaft do you need? Which 1 is the best choice for your project? Here are some tips to choose the right screw:
Machined screw shaft
The screw shaft is a basic piece of machinery, but it can be further customized depending on the needs of the customer. Its features include high-precision threads and ridges. Machined screw shafts are generally manufactured using high-precision CNC machines or lathes. The types of screw shafts available vary in shape, size, and material. Different materials are suitable for different applications. This article will provide you with some examples of different types of screw shafts.
Ball screws are used for a variety of applications, including mounting machines, liquid crystal devices, measuring devices, and food and medical equipment. Various shapes are available, including miniature ball screws and nut brackets. They are also available without keyway. These components form a high-accuracy feed mechanism. Machined screw shafts are also available with various types of threaded ends for ease of assembly. The screw shaft is an integral part of linear motion systems.
When you need a machined screw shaft, you need to know the size of the threads. For smaller machine screws, you will need a mating part. For smaller screw sizes, the numbers will be denominated as industry Numeric Sizes. These denominations are not metric, but rather in mm, and they may not have a threads-per-inch designation. Similarly, larger machine screws will usually have threads that have a higher pitch than those with a lower pitch.
Another important feature of machine screws is that they have a thread on the entire shaft, unlike their normal counterparts. These machine screws have finer threads and are intended to be screwed into existing tapped holes using a nut. This means that these screws are generally stronger than other fasteners. They are usually used to hold together electronic components, industrial equipment, and engines. In addition to this, machine screws are usually made of a variety of materials.
Acme screw
An Acme screw is the most common type of threaded shaft available. It is available in a variety of materials including stainless steel and carbon steel. In many applications, it is used for large plates in crushing processes. ACME screws are self-locking and are ideal for applications requiring high clamping force and low friction. They also feature a variety of standard thread forms, including knurling and rolled worms.
Acme screws are available in a wide range of sizes, from 1/8″ to 6″. The diameter is measured from the outside of the screw to the bottom of the thread. The pitch is equal to the lead in a single start screw. The lead is equal to the pitch plus the number of starts. A screw of either type has a standard pitch and a lead. Acme screws are manufactured to be accurate and durable. They are also widely available in a wide range of materials and can be customized to fit your needs.
Another type of Acme screw is the ball screw. These have no back drive and are widely used in many applications. Aside from being lightweight, they are also able to move at faster speeds. A ball screw is similar to an Acme screw, but has a different shape. A ball screw is usually longer than an Acme screw. The ball screw is used for applications that require high linear speeds. An Acme screw is a common choice for many industries.
There are many factors that affect the speed and resolution of linear motion systems. For example, the nut position and the distance the screw travels can all affect the resolution. The total length of travel, the speed, and the duty cycle are all important. The lead size will affect the maximum linear speed and force output. If the screw is long, the greater the lead size, the higher the resolution. If the lead length is short, this may not be the most efficient option.
Lead screw
A lead screw is a threaded mechanical device. A lead screw consists of a cylindrical shaft, which includes a shallow thread portion and a tightly wound spring wire. This spring wire forms smooth, hard-spaced thread convolutions and provides wear-resistant engagement with the nut member. The wire’s leading and trailing ends are anchored to the shaft by means appropriate to the shaft’s composition. The screw is preferably made of stainless steel.
When selecting a lead screw, 1 should first determine its critical speed. The critical speed is the maximum rotations per minute based on the natural frequency of the screw. Excessive backlash will damage the lead screw. The maximum number of revolutions per minute depends on the screw’s minor diameter, length, assembly alignment, and end fixity. Ideally, the critical speed is 80% of its evaluated critical speed. A critical speed is not exceeded because excessive backlash would damage the lead screw and may be detrimental to the screw’s performance.
The PV curve defines the safe operating limits of a lead screw. This relationship describes the inverse relationship between contact surface pressure and sliding velocity. As the PV value increases, a lower rotation speed is required for heavier axial loads. Moreover, PV is affected by material and lubrication conditions. Besides, end fixity, which refers to the way the lead screw is supported, also affects its critical speed. Fixed-fixed and free end fixity are both possible.
Lead screws are widely used in industries and everyday appliances. In fact, they are used in robotics, lifting equipment, and industrial machinery. High-precision lead screws are widely used in the fields of engraving, fluid handling, data storage, and rapid prototyping. Moreover, they are also used in 3D printing and rapid prototyping. Lastly, lead screws are used in a wide range of applications, from measuring to assembly.
Fully threaded screw
A fully threaded screw shaft can be found in many applications. Threading is an important feature of screw systems and components. Screws with threaded shafts are often used to fix pieces of machinery together. Having fully threaded screw shafts ensures that screws can be installed without removing the nut or shaft. There are 2 major types of screw threads: coarse and fine. When it comes to coarse threads, UTS is the most common type, followed by BSP.
In the 1840s, a British engineer named Joseph Whitworth created a design that was widely used for screw threads. This design later became the British Standard Whitworth. This standard was used for screw threads in the United States during the 1840s and 1860s. But as screw threads evolved and international standards were established, this system remained largely unaltered. A new design proposed in 1864 by William Sellers improved upon Whitworth’s screw threads and simplified the pitch and surface finish.
Another reason for using fully threaded screws is their ability to reduce heat. When screw shafts are partially threaded, the bone grows up to the screw shaft and causes the cavity to be too narrow to remove it. Consequently, the screw is not capable of backing out. Therefore, fully threaded screws are the preferred choice for inter-fragmentary compression in children’s fractures. However, surgeons should know the potential complication when removing metalwork.
The full thread depth of a fully threaded screw is the distance at which a male thread can freely thread into the shaft. This dimension is typically 1 millimeter shy of the total depth of the drilled hole. This provides space for tap lead and chips. The full-thread depth also makes fully threaded screws ideal for axially-loaded connections. It is also suitable for retrofitting applications. For example, fully threaded screws are commonly used to connect 2 elements.
Ball screw
The basic static load rating of a ball screw is determined by the product of the maximum axial static load and the safety factor “s0”. This factor is determined by past experience in similar applications and should be selected according to the design requirements of the application. The basic static load rating is a good guideline for selecting a ball screw. There are several advantages to using a ball screw for a particular application. The following are some of the most common factors to consider when selecting a ball screw.
The critical speed limit of a ball screw is dependent on several factors. First of all, the critical speed depends on the mass, length and diameter of the shaft. Second, the deflection of the shaft and the type of end bearings determine the critical speed. Finally, the unsupported length is determined by the distance between the ball nut and end screw, which is also the distance between bearings. Generally, a ball screw with a diameter greater than 1.2 mm has a critical speed limit of 200 rpm.
The first step in manufacturing a high-quality ball screw is the choice of the right steel. While the steel used for manufacturing a ball screw has many advantages, its inherent quality is often compromised by microscopic inclusions. These microscopic inclusions may eventually lead to crack propagation, surface fatigue, and other problems. Fortunately, the technology used in steel production has advanced, making it possible to reduce the inclusion size to a minimum. However, higher-quality steels can be expensive. The best material for a ball screw is vacuum-degassed pure alloy steel.
The lead of a ball screw shaft is also an important factor to consider. The lead is the linear distance between the ball and the screw shaft. The lead can increase the amount of space between the balls and the screws. In turn, the lead increases the speed of a screw. If the lead of a ball screw is increased, it may increase its accuracy. If not, the lead of a ball screw can be improved through preloading, lubrication, and better mounting accuracy.
