Product Description

Overview
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
 
 
 

 
 
 

  
 

Screws and Screw Shafts

A screw is a mechanical device that holds objects together. Screws are usually forged or machined. They are also used in screw jacks and press-fitted vises. Their self-locking properties make them a popular choice in many different industries. Here are some of the benefits of screws and how they work. Also read about their self-locking properties. The following information will help you choose the right screw for your application.

Machined screw shaft

A machined screw shaft can be made of various materials, depending on the application. Screw shafts can be made from stainless steel, brass, bronze, titanium, or iron. Most manufacturers use high-precision CNC machines or lathes to manufacture these products. These products come in many sizes and shapes, and they have varying applications. Different materials are used for different sizes and shapes. Here are some examples of what you can use these screws for:
Screws are widely used in many applications. One of the most common uses is in holding objects together. This type of fastener is used in screw jacks, vises, and screw presses. The thread pitch of a screw can vary. Generally, a smaller pitch results in greater mechanical advantage. Hence, a machined screw shaft should be sized appropriately. This ensures that your product will last for a long time.
A machined screw shaft should be compatible with various threading systems. In general, the ASME system is used for threaded parts. The threaded hole occupies most of the shaft. The thread of the bolt occupy either part of the shaft, or the entire one. There are also alternatives to bolts, including riveting, rolling pins, and pinned shafts. These alternatives are not widely used today, but they are useful for certain niche applications.
If you are using a ball screw, you can choose to anneal the screw shaft. To anneal the screw shaft, use a water-soaked rag as a heat barrier. You can choose from 2 different options, depending on your application. One option is to cover the screw shaft with a dust-proof enclosure. Alternatively, you can install a protective heat barrier over the screw shaft. You can also choose to cover the screw shaft with a dust-proof machine.
If you need a smaller size, you can choose a smaller screw. It may be smaller than a quarter of an inch, but it may still be compatible with another part. The smaller ones, however, will often have a corresponding mating part. These parts are typically denominated by their ANSI numerical size designation, which does not indicate threads-per-inch. There is an industry standard for screw sizes that is a little easier to understand.

Ball screw nut

When choosing a Ball screw nut for a screw shaft, it is important to consider the critical speed of the machine. This value excites the natural frequency of a screw and determines how fast it can be turned. In other words, it varies with the screw diameter and unsupported length. It also depends on the screw shaft’s diameter and end fixity. Depending on the application, the nut can be run at a maximum speed of about 80% of its theoretical critical speed.
The inner return of a ball nut is a cross-over deflector that forces the balls to climb over the crest of the screw. In 1 revolution of the screw, a ball will cross over the nut crest to return to the screw. Similarly, the outer circuit is a circular shape. Both flanges have 1 contact point on the ball shaft, and the nut is connected to the screw shaft by a screw.
The accuracy of ball screws depends on several factors, including the manufacturing precision of the ball grooves, the compactness of the assembly, and the set-up precision of the nut. Depending on the application, the lead accuracy of a ball screw nut may vary significantly. To improve lead accuracy, preloading, and lubrication are important. Ewellix ball screw assembly specialists can help you determine the best option for your application.
A ball screw nut should be preloaded prior to installation in order to achieve the expected service life. The smallest amount of preload required can reduce a ball screw’s calculated life by as much as 90 percent. Using a lubricant of a standard grade is recommended. Some lubricants contain additives. Using grease or oil in place of oil can prolong the life of the screw.
A ball screw nut is a type of threaded nut that is used in a number of different applications. It works similar to a ball bearing in that it contains hardened steel balls that move along a series of inclined races. When choosing a ball screw nut, engineers should consider the following factors: speed, life span, mounting, and lubrication. In addition, there are other considerations, such as the environment in which the screw is used.

Self-locking property of screw shaft

A self-locking screw is 1 that is capable of rotating without the use of a lock washer or bolt. This property is dependent on a number of factors, but 1 of them is the pitch angle of the thread. A screw with a small pitch angle is less likely to self-lock, while a large pitch angle is more likely to spontaneously rotate. The limiting angle of a self-locking thread can be calculated by calculating the torque Mkdw at which the screw is first released.
The pitch angle of the screw’s threads and its coefficient of friction determine the self-locking function of the screw. Other factors that affect its self-locking function include environmental conditions, high or low temperature, and vibration. Self-locking screws are often used in single-line applications and are limited by the size of their pitch. Therefore, the self-locking property of the screw shaft depends on the specific application.
The self-locking feature of a screw is an important factor. If a screw is not in a state of motion, it can be a dangerous or unusable machine. The self-locking property of a screw is critical in many applications, from corkscrews to threaded pipe joints. Screws are also used as power linkages, although their use is rarely necessary for high-power operations. In the archimedes’ screw, for example, the blades of the screw rotate around an axis. A screw conveyor uses a rotating helical chamber to move materials. A micrometer uses a precision-calibrated screw to measure length.
Self-locking screws are commonly used in lead screw technology. Their pitch and coefficient of friction are important factors in determining the self-locking property of screws. This property is advantageous in many applications because it eliminates the need for a costly brake. Its self-locking property means that the screw will be secure without requiring a special kind of force or torque. There are many other factors that contribute to the self-locking property of a screw, but this is the most common factor.
Screws with right-hand threads have threads that angle up to the right. The opposite is true for left-hand screws. While turning a screw counter-clockwise will loosen it, a right-handed person will use a right-handed thumb-up to turn it. Similarly, a left-handed person will use their thumb to turn a screw counter-clockwise. And vice versa.

Materials used to manufacture screw shaft

Many materials are commonly used to manufacture screw shafts. The most common are steel, stainless steel, brass, bronze, and titanium. These materials have advantages and disadvantages that make them good candidates for screw production. Some screw types are also made of copper to fight corrosion and ensure durability over time. Other materials include nylon, Teflon, and aluminum. Brass screws are lightweight and have aesthetic appeal. The choice of material for a screw shaft depends on the use it will be made for.
Shafts are typically produced using 3 steps. Screws are manufactured from large coils, wire, or round bar stock. After these are produced, the blanks are cut to the appropriate length and cold headed. This cold working process pressudes features into the screw head. More complicated screw shapes may require 2 heading processes to achieve the desired shape. The process is very precise and accurate, so it is an ideal choice for screw manufacturing.
The type of material used to manufacture a screw shaft is crucial for the function it will serve. The type of material chosen will depend on where the screw is being used. If the screw is for an indoor project, you can opt for a cheaper, low-tech screw. But if the screw is for an outdoor project, you’ll need to use a specific type of screw. This is because outdoor screws will be exposed to humidity and temperature changes. Some screws may even be coated with a protective coating to protect them from the elements.
Screws can also be self-threading and self-tapping. The self-threading or self-tapping screw creates a complementary helix within the material. Other screws are made with a thread which cuts into the material it fastens. Other types of screws create a helical groove on softer material to provide compression. The most common uses of a screw include holding 2 components together.
There are many types of bolts available. Some are more expensive than others, but they are generally more resistant to corrosion. They can also be made from stainless steel or aluminum. But they require high-strength materials. If you’re wondering what screws are, consider this article. There are tons of options available for screw shaft manufacturing. You’ll be surprised how versatile they can be! The choice is yours, and you can be confident that you’ll find the screw shaft that will best fit your application.