What is bitumen rubber mastic joint sealant? Bitumen rubber mastic sealant is a single component and cold applysolvent based bitumen rubber mastic joint sealant. The sealant on curing formsa tough and flexible seal. it has excellent adhesion to concrete, brickwork,asphalt and most construction material substrates. The mastic sealant ismodified with non-asbestos fibers to make the sealant thixotropic and slumpfree when applied on vertical areas.Crack Filler , Crack Repair , Asphalt Crack Filler , Crack SealantCrack?sealant isgeneral term for materials which are used to fill and thereby sealcracks and joints in asphalt and cement pavementsurfaces. Crack repair materials are sometimes also referred to inthe art by terms such as, for example: hotpour; crack seal; crack sealer; crack sealant; crackfill; crack filler; joint seal; joint sealer; jointsealant; joint fill; joint filler; cold joint adhesives; marker adhesives; andother asphalt/resin/polymer compositions. Throughout the present specificationand in the appended claims, the term “crack sealant” will be usedexclusively, but the term should be understood to encompass all materialshaving the same general composition, use and/or properties. AsphaltCrack filler is widely used to fill and thereby seal cracks andjoints in highways, streets, parking lots and driveways from water penetration. The use of crack sealants prolongs the service life of suchpavement surfaces.Application of bitumen rubber mastic joint sealant:Flexible joint sealantStability at high ambient temperaturesExcellent adhesion, strong durable bondSingle componentWhere you can use the bitumen rubber mastic joint sealant?Bitumenrubber mastic joint sealant is ideally suited for sealing andfilling gaps and joints on roofs, pointing horizontal chases for waterproofingmembranes and felts. Sealing around roof/ wet service pipes. Pointingbetween brickwork and roof flashings. Sealing cracks in asphalt and concretepavements. Filling horizontal joints in concrete and asphalt where movementsare not expected.How to use bitumen rubber mastic joint sealant?Surface preparationSurface must be free from all dirt, dust and loose material. Any oiland grease contamination must be removed completely. The surface must bemade dry prior to the application of the sealant.MaskingPrior to application of primer and sealant, apply masking tape to theadjacent sides of the joints for getting a neat finish and to avoid thespilling over of the sealant on the edges.PrimingUnder normal circumstances priming is not required. However, for verydry and porous surfaces, it is recommended to apply one coat of a solvent basedbitumen primer. Similarly for joints subjected to continuous immersion, primingis recommended. Application The bitumenrubber mastic joint sealant can be applied by means of aspatula or trowel. As the product is solvented, it is recommended to mix thecontents of the pail with a paddle mixer for a few minutes prior to theapplication to ensure a homogenous mix. Sealant application should start formthe bottom of the joint/groove and continued to the top. Immediately tool thejoint with the spatula or putty knife to smoothen and compress the sealant toeffect total contact with joint surfaces. The putty knife shall be moistenedwith a cleaning solvent to prevent the sealant to adhere to the knife andensuring a smooth and neat finish. Where masking tape has been employed to keepbuilding surfaces clean, it is advisable to remove them at the moment thesealant filling is completed. Hot bitumen poured crack filler sealant Hot Crack Filler is a single component, hot-applied, rubberized asphalt crack and joint sealant.Hot Crack Filler is specially formulated for both direct fire and oil-jacketedmelters. It is heat stabilized to withstand temperatures up to 450oF without experiencing polymer degradation. When melted and properly applied it forms aresilient crack sealant for both asphaltic and cementations pavements.Curing time of bitumen rubber mastic joint sealantThe sealant cures on solvent release. The initialsurface skinning will occur within 24-48 hour, however full cure depends onrelative humidity.
While the terms crack filling and crack sealing are often used interchangeably, there are differences between these methods of pavement crack repair. Understanding these differences will help you make the most cost-effective choice and long-lasting solution for crack treatment of your asphalt surfaces. Crack sealing Crack sealing is a method in which hot sealant is applied to working cracks to prevent water intrusion. What are working cracks? Working cracks are horizontal and/or vertical movements in cracks greater than 0.1 inches.An example of working cracks is a transverse crack. Understanding crack sealants Crack sealants are rubberized and have the ability to seal the crack while staying flexible with the pavement’s movement. Beneficial for active cracks that continue to extend in size and severity over time, crack sealants stop water and debris from entering the crack, protecting the longevity of the pavement. Crack filling Crack filling is the placement of asphalt emulsion into non-working cracks to reduce water infiltration and to reinforce the adjacent pavement.What are non-working cracks? Non-working cracks are horizontal and/or vertical movements in the crack less than 0.1 inches. Examples of non-working cracks include longitudinal, diagonal and alligator cracks. In contrast to crack sealing, crack filling treats pavement that doesn’t show significant movement. 7 types of cracks Before you choose which method is best for treating your pavement cracks, it is critical to understand the types of cracks that can occur: 1. Transverse cracksThe crack extends in a perpendicular fashion to the centerline or laydown direction of the pavement.Cause: thermal shifts and are the first to appear. 2. Longitudinal cracksLongitudinal cracks run parallel to the centerline or laydown direction of the pavement and appear later than transverse cracks.Cause: Poor lane join construction, pavement shrinkage, hardening of the asphalt and shifts in temperature. 3. Edge cracksEdge cracks develop between the edge of the pavement and concrete curbs.Cause: Seasonal thaw cycles that result in widening and deepening of the crack. 4. Seam cracksSeam cracks develop along joints of pavement.Cause: Poor paving procedures 5. Block cracksBlock cracks develop in square pieces and are spaced between 4 to 12 feet. They often appear at the end of the pavement life.Cause: improper construction of base courses or lack of drainage. 6. Reflective cracksCause: Changes in the movement of the sub-base, causing the surface material to crack.Correcting sub-base courses can help eliminate reflective cracks. 7. Alligator crackingAlligator cracking is a series of interconnecting cracks that are extensive, close together and resemble an alligator’s skin.Cause: Deterioration in the asphalt from repeated traffic loading. Choosing the right method of crack repair When deciding whether to fill or seal a crack, the best option is to speak to a professional. They will carefully evaluate the type of crack, expected movement of the pavement and whether it is a working or non-working crack. Transverse cracks are usually the first to appear in pavement surfaces, but other types of cracks can develop at the same time. Crack filling: Often the best option for non-working cracks with moderate to no edge deterioration. Crack sealing: Often best option for cracks with limited edge deterioration.
"ESN5160TXC vacuum sweeper" adopts the theory of vacuumsuction and no water operation, especially suitable for no need to sprinklewater and winter work. It has functions such as road dusting, primary dustcollection, secondary dust collection and dust recovery. In the process ofvacuuming, there is no secondary dusting and dust removal system. The dust issucked into the box can be separated by dusting several times, so that theparticles and dust can be separated, and the feathers of suckable andretainable can be realized.
I TheSealing Process Eliminates Secondary Pollution Thegarbage is closed in the process of compression loading and transportation, andhas a diversion trough, anti-backflow device and anti-side leakage device toprevent sewage leakage. II AutomaticAnd Manual Operation Of Two Sets Of System Automatic Control Aload cycle can be implemented with a single button. Manual operation can alsobe used to complete the loading and unloading of the garbage. III SafeAnd ReliableAnadvanced hydraulic lift safety circuit is used. Even if the tubing bursts, thefiller will not suddenly fall to cause a serious accident, which improves thesafety of use. IV AdvancedElectronic Control SystemTheimported PLC (programmable controller) integrated control is adopted, thecontrol circuit is generated in the PLC, and the logic loop is adopted toensure that each operation instruction is executed in order. V HighEfficiencyThefilling operation does not exceed 25 seconds in one cycle, and the cycle timein the unloading operation does not exceed 40 seconds. VI HighQuality Imported OriginalsThe key components of electrical and hydraulic systems use imported components, such as multi-way valves, differential valves, back pressure valves, balance balancing valves, andtwo-way compression valves.
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Vehicle-mounted hot-recycled asphalt pavement maintenance vehicle:fixed hotbox asphalt pavement maintenance vehicle (Model: ESN5161TXB) Vehicle-mounted hot-recycled asphalt pavement maintenance vehicle:fixed hotbox asphalt pavement maintenance vehicle (Model: ESN5161TXB) Vehicle-mounted hot-recycled asphalt pavement maintenance vehicle:fixed hotbox asphalt pavement maintenance vehicle (Model: ESN5161TXB) After the asphalt pavement is used for aperiod of time, defects such as damage and deformation will occur successively, collectively referred to as pavement diseases. Common road defects in the earlydays are: cracks, pits, ruts, loose, subsidence, bridgehead culverts, surfacedamage, etc. If the road surface disease is not treated in time, under the combined effect of traffic load and water, the damage will develop rapidly, which will increase the maintenance cost in the later period and even endanger the safety of the passengers. The hot material heat-repairing process is one of the asphalt pavement disease treatment processes. The heating equipment is used to repair the pavement on-site heat, which can solve the joint problem well and significantly improve the construction quality. The technology of recycling old asphalt concrete pavement is the on-site thermal regeneration technology of asphalt pavement to heat and loosen the asphalt pavement surface, spray emulsified asphalt, add new asphalt mixture, and then spread the paving and leveling, compacting and forming, and achieve a certain depth within one time (generally not more than 60mm). The thermal regeneration repairing machine series is an auxiliary equipment for realizing the in-situ heat regeneration technology. The main construction processes include: 1. Determine the extent and depth of the damaged part, and fix the repairing plan according to the actual situation. Appropriately move 5cm outside, so that the joint treatment effect is better; 2, clean up. Clean the dust, impurities, etc. in the disease area with a cleaning tool such as a broom; 3. Heat the area to be repaired with a heating plate, and set the time according to the road surface. After a certain time, the road surface is softened; 4, softened road surface, cut edge; 5. Spraying emulsified asphalt to form alayer of bonded asphalt, and outputting a new asphalt mixture that has beenkept warm from the silo; 6, paving and leveling, and then spraying anappropriate amount of emulsified asphalt as a regenerant; 7, compaction equipment compaction. Repeatedcompaction from the side to the middle; 8, clean up the work area, open traffic,usually open in the summer traffic time is slightly longer. ESUNbrand regeneration roads repair equipment 1.Vehicle-mounted hot-recycled asphalt pavement maintenance vehicle: fixed hotbox asphalt pavement maintenance vehicle (Model: ESN5161TXB) 2.Vehicle-mounted hot-recycled asphalt pavement maintenance vehicle: separatedtype thermal regeneration maintenance vehicle (Model: CLYB-CYB1000) 3.asphalt pavementhot-repair trailerAsphalt FryingMachine (Drum Type) (Model: CLYB-ZS600) 4.CLYJ-TDA series trailer self-propelledmulti-function heating plate (heating area 1.35-2m2 optional,partition heating) 5.ESNJ-L serieshand-held heating plate (heating area 0.35-1.5m2 optional, someproducts can be partitioned heating)
ESUN garbagecompactor truck is a sanitation vehicle that integrates garbage collection andcompression transportation. It is equipped with a box structure, loadingmechanism, compression mechanism, unloading mechanism and control system on thechassis frame. ESUN garbagecompactor truck has the characteristics of simple operation, good sealingperformance, high work efficiency, manpower saving and high compression ratio.It is suitable for barrel, bag and bulk domestic garbage collection andtransportation in urban residential areas, communities and large enterprises. The garbagecompactor truck is subject to maintenance. How to maintain and maintain theESUN garbage compactor truck? 1. The use andmaintenance of the ESUN garbage compactor truck chassis and engine parts can becarried out with reference to the manual book. 2. During the newgarbage truck's running-in stage, the loading capacity shall be controlledwithin 70% of the rated load mass within the driving range of 1500-2500km andthe push plate unloading within 900 times. Do not slam the throttle when unloading. 3. Always checkthe oil system for oil leakage and repair and replace the oil seal in time.Lubricate the moving parts regularly and apply lubricant to the surface of eachrail. 4. Clean theentire surface of the vehicle and the carton and the pressure filler after theend of each day. 5. Clean thesealing joint surface every day to ensure a good seal, and avoid damage to therubber seals and mats due to the sharp objects or hard objects in the garbage. 6. When thegarbage compactor truck cylinder is operated up to 300 times, replace allworking oil. Open the hydraulic oil tank oil drain screw plug, inject new oilfrom the upper oil filling hole, and then start the engine test run eachcylinder action, the operation is reliable. 7. The high pressureoil pipe is replaced every two years, and if it is found to be damaged, expanded or cracked during use, it should be replaced in time.
Basedon customer needs, ESUN continues to provide customers with professionalsolutions and equipment for road maintenance problems. Now we are launching theroad maintenance "New Guardian" - CLYB-ZS600 towed asphalt mixer.CLYB-ZS600towed asphalt mixing machine efficiently and economically treats problems suchas pot hole, cracks, hump on asphalt pavement.Productadvantages A variety of functions Ithas many functions such as waste asphalt material regeneration, cold materialheating, asphalt material mixing, road surface filling and so on, which canrepair damaged roads efficiently and quickly. Efficient heating Thedrum type 360 degree rotation uniform heating kettle has a double-layer heatinsulation system. The heating time of the first material is only about 20minutes, and the heating time of the second material is less than 15 minutes. Economic andenvironmental protection Whenthe operation is repaired, the barrel is immediately recycled and reused, andthe raw materials are recycled to maximize the cost, reduce costs and protectthe environment. Quality parts Maincomponents such as generators, burners and electrical components are imported,torsion spring damping chassis and mobile chassis.
Maybeyou can use the ESN5180TXS sweeper in a familiar way, but you don't know how tomaintain it. Truck maintenance on time, can fully utilize its technicalperformance and work efficiency, and extend its service life. Here are somepoints to note about the maintenance of the ESN5180TXS washing car:Dailymaintenance is carried out after work as the basic maintenance should focus oncleaning and inspection. 1.Clean the working surface of each sensor of the sweeper. 2.Clean the lens surface of each camera of the sweeper. 3.After cleaning the dusty road surface, the air filter of the main and auxiliaryengines should be cleaned daily to protect the engine. 4.Flush the inside of the sewage tank, the filter screen, the inside of thestraw, the body and the exterior of each assembly, and wipe the glass andmirrors. 5.Check the fuel tank fuel quantity, cooling water quantity, and oil quantity,and add if necessary. 6.Check the tightness of each belt of the auxiliary engine output and adjust ifnecessary. 7.Check the tire nut, each fastening bolt, the riding bolt and the tire pressure,and tighten and refill if necessary. 8.Check the vehicle for water leakage, air leakage, oil leakage, etc. Ifnecessary, remove it. 9.Open the water discharge switch in the lower part of the water filter to drainthe impurities from the water filter. 10.Exclude the fault that occurred on the day.
On July 13, 019, the company organized agroup activity with the theme of “Unity and Cooperation, BeyondDreams”. Everyone went to the beautiful city of Taishan, Jiangmen.Appreciate the towers of Fuyue Village witha rich sense of history; see the blurred scenery intertwined with Qiandao Lakeand Lake Island; watch the scenery of the mountains in the Windmill Mountain;visit the filming base of "Let the Bullets Fly" - Meijia Courtyard...... Let us enjoy the beautiful scenery~~ First stop - Fuyue Village Second stop - Qiandao Lake Lunch Third stop - Windmill Hill The fourth stop – the Movie "Let thebullet fly" shooting base
On Jan. 4th, 2019, our North West sales manager send back the 1st sales contract for our new CLYQ-12000 vacuum street sweeper. This new street sweeper is our 2nd generation of vacuum street sweeper, which raised the bar in truck mounted vacuum sweeping performance in the China market. Our CLYQ-12000 sweepers offer performance flexibility; allowing the selection of single or dual nozzle. It's a versatile product that's suited for general street sweeping, leaf removal and catch basin cleaning applications - specifically designed to be efficient in sucking up bulky debris such as leaves and sticks as well as construction debris such as rocks, bricks, and broken asphalt. As the first order in the new year, which given our ESUN people more power and confidence in the market, we ESUN will continually developing better road sweeping products for our customers.
Wishing you a Happy New Year with the hope that you will have many blessings in the year to come.
Oct. 10, 2013 - ESUN, a leader in roadmaintenance machinery, held a road maintenance machinery presentation in Gansu. ESUN held many presentations to show and promoteits products. This time, ESUN made a presentation in Gansu. In thispresentation, ESUN introduced its features and applications for its differentproducts such as cape seal, cold in-place recycling, conventional chip seal, conventional fog seal, conventionalmicro surfacing, crack seal, hot in-place recycling, modified chip seal, patching,premium chip seal, premium micro surfacing, rejuvenating fog seal, slurry sealand ultra thin lift overlay, then demoed the working procedures in the road. The presentation was held successfully and got a lotof attention from customers.
Sep. 10, 2013 - ESUN, a specialist in roadmaintenance machinery, held Hunan Technical Exchange Meeting for RoadPreventive Maintenance. To improve the technology of road maintenancemachinery, ESUN held technical exchange meeting for road preventive maintenancein Hunan. ESUN invited many specialists from Hunan and some government staff. ESUN showed its new asphalt crack repair products, pothole patching techniques,bridge expansion joint systemand had a discussion with the specialists.
Sep. 03, 2013 - ESUN, a leader in roadmaintenance machinery, held a presentation in Weifang Shandong. ESUN held many presentations to show and promoteits products. This time, ESUN made a presentation in Weifang Shandong. In thispresentation, ESUN introduced its features and applications for its differentproducts, then showcased its working procedures in the road. The presentation was held successfully and got a lotof attention from customers. And we received many inquiries for our asphaltcrack sealer, asphalt patcher, asphalt distributor, asphalt chip sealer,sealant, bridge expansion joint, jet patcher and colored antiskid pavement werevery popular with our customer.
Sep. 01, 2013 - ESUN, a leader in roadmaintenance machinery, held a presentation in Jinan Shandong. ESUN held many presentations to show itsproducts. This time, ESUN made a presentation in Jinan Shandong. In thispresentation, ESUN introduced its features and applications for its differentproducts, then showed its working procedures in the road. Our asphalt cracksealing machine, asphalt hot box with heater, asphalt distributor, asphalt chipsealer, asphalt sealant, bridge expansion joint, jet patcher and coloredantiskid pavement were very popular with our customer. Thepresentation was held successfully and got a lot of attention from customers.
Aug. 28, 2013 - ESUN, a leader in roadmaintenance machinery, held a presentation in Boshan Shandong. ESUN held many presentations to show itsproducts. This time, ESUN made a presentation in Boshan Shandong. In thispresentation, ESUN introduced its features and applications for its differentproducts such as crack sealing machine, asphalt heater, asphalt hot box,asphalt patcher, bridge expansion joint, asphalt sealant, then showed itsworking procedures in the road. The presentation was held successfully and got a lotof attention from customers.
May 22, 2013 - ESUN, a leader in road maintenancemachinery, attended National Road Maintenance Technology Seminar in 2013. In this seminar, many representatives fromdifferent company in China attended and discussed the road maintenance technology.The government cared about the road maintenance andtalked the requirements for road maintenance machines.
1. Q: What’s the model of asphalt distributor? A: Standard: 4 cubic meters &5 cubic meters; Intelligent: 6 cubic meters &8 cubic meters &10 cubic meters . 2. Q: What’s the universal chassis for asphalt distributor? A: 4-8 cubic meters of asphalt distributor is equipped with Dongfeng Duolika chassis, 10 cubic meters of asphalt distributor is equipped with Dongfeng Tianjing chassis. 3. Q: What’s the power source of asphalt distributor? A: The chassis transmits parts of power to the hydraulic motor , which will drive asphalt bitumen pumped oil and the other parts to the air compressor , which will transfer the asphalt oil to asphalt pipe to spray, by PTO. 4. Q: What’s the number of the rear pipe nozzle and the width? A: 4 tons of asphalt distributor: 24 nozzles, 6 on the left and right, 12 in the middle; 4 meters wide, third foldable, 1 meter on the left and right, 2 meters in the middle. over 5 tons of asphalt distributor: 42 nozzles, 14 on each side (left, middle & right) , third foldable, 2 meters on each side (left, middle & right). 5. Q: What’s the spraying rate of the asphalt distributor? How to control? A: Standard: 0. 3-3L/m2, by controlling the valve; Intelligent: 0. 3-3L/m2, by the system settings. 6. Q: What are the factors affecting the rate of spraying? A: Speed of chassis driving, speed of asphalt pump, the height of rear tube. 7. Q: What material can the asphalt distributor spray? A: Standard: only can distribute emulsified asphalt and ordinary hot asphalt; Intelligent: emulsified asphalt and different models of hot asphalt (attention: If the spraying material is rubber asphalt, it has to be equipped with agitator). 8. Q: What’s the temperature of spraying material? A: Hot asphalt: 160-190℃, rubber asphalt: 170-200℃, emulsified asphalt: 50-60℃ (without heating). 9. Q: What’s the difference between the heating modes of standard and intelligent asphalt distributor? A: Standard: air heating in the burner, without the spraying exhaust pipe heating; Intelligent: transfer oil heating in the burner, with transfer oil heating in spraying exhaust pipe. 10. Q: Does the asphalt distributor need cleaning? How to clean it? A: Yes; using air pressure to clean first and then clean by diesel. 11. Q: What’s the difference between the control platforms of standard and intelligent asphalt distributor? A: Standard: without control platforms, only equipped with operating floor; Intelligent: with cab control screen and rear control platform. 12. Q: What’s the feature of the design concept of asphalt tank? A: Asphalt tank has good insulation properties with aluminum silicate insulation materials around, also equipped with burner, in case that the low temperature will affect construction quality during the construction. 13. Q: What’s the feature of asphalt pump? A: Standard: standard asphalt pump; Intelligent: thermal asphalt pump. 14. Q: What’s the function of rear control platform of intelligent asphalt distributor? A: Mainly spare, in case of malfunction of cab caused by pollution or for the control of individual nozzle. 15. Q: What’s the brand of hydraulic pump of standard and intelligent asphalt distributor? For which parts to provide power? A: Standard: domestic /Saiyuan, optional: imported from Italy/RONZIO; Mainly for asphalt pump. 16. Q: What’s the brand of the burner of the standard and intelligent asphalt distributor? What’s the combustion value? A: Italy Riello; one hundred thousand calories for 4 m3 asphalt distributor, two hundred thousand calories for over 5 m3 asphalt distributor. 17. Q: Is there external power supply for the asphalt distributor for night operation? A: No, but chassis power supply is equipped with night lights. 18. Q: What’s the main difference between the standard and intelligent asphalt spraying? A: Standard: controlling spray volume and spray width manually and artificially; Intelligent: controlling spray volume and spray width by Electronically controlled automatic control system settings. 19. Q: What’s the main application of the asphalt distributor? A: ①Intermediate layer bonded oil spraying during construction or maintenance period; ②New highway “prime coat”, “waterproof layer”, “under seal layer”, “sticky floor” requires high-quality asphalt spraying; ③ Low-grade roads and lots of township roads’ “layup” Construction needs high quality asphalt spraying; ④A large number of pavement maintenance operations adopts “single sealcoating” and “double sealcoating”, which needs high quality asphalt spraying. 20. Q: What’s the competitive advantage of Hangzhou asphalt distributor? A: Long professional brand; high cost-effective; stable quality; applicable type of design; timely after-sales service. 21. Q: What’s the cost of spraying per square meter? A: According to the requirement of customer and depending on the material and spraying rate.
1. Q: How many linear meters of crack an ESUN crack sealing machine can seal per day? A: 8 working hours per day, approximate 500-3000 linear meters, depending on the pavement crack intensity, operation proficiency and road closure situation. 2. Q: Is crack sealing machine applicable to concrete pavement? How to deal with the fine crack? A: Yes, it is. As to the fine crack, we suggest using special sealant or asphalt materials, and scraping the materials into the crack with special sealing tip. 3. Q: How long it takes to melt the sealant with ESUN crack sealing machine? A: It’s about 30-45 minutes from the machine start to proper functioning. 4. Q: which components of 350, 500 liters crack sealing machine are imported? A: 500 liters: Engine, temperature controller, material pump, hydraulic motor, burner, and electric heated hose; 350 liters: temperature controller, burner, and generator. 5. Q: The difference between CLYG-ZS350 and CLYG-TSS500? A: ①power source of agitator and material pump: S500: Hydraulic drive, S350: Electric drive; ②S500 using 12v voltage, S350 using 220v voltage; ③S500: material pump has dual circulatory system, S350: material pump is made in china without dual circulatory system; ④S500: using engine, S350: using generator⑤ZS500: self-propelled, TS500: can’t self-propelled. 6. Q: What’s the advantage of the external pump in crack sealing machine? A: Easy cleaning, facilitate maintenance, not occupying the hot box, fast discharging (76L/min). 7. Q: What’s the feature of the heating hose of 500 crack sealing machine? A: 75v voltage for safe, 270°rotation for great work area, great Resistance to bending, long service life, 6 meters heat insulation. 8. Q: What’s the loading height of crack sealing machine? A: 125cm for Asians’ using, convenient charging and low labor intensity. 9. Q: What’s the working principle of crack sealing machine? A: Generator and hydraulic system driven by the engine , burners and heating hose controlled by thermostat, stirrer and material pump driven by hydraulic motor, material pump pours the sealant into crack for sealing through the circulation pipe, heating hose, handlebar by turning. 10. Q: Can the material for crack sealing machine be ordinary asphalt? A: Yes, but must ensure that’s no impurities in case of pipe blockage and pump damage. 11. Q: With respect to trailer crack sealing machine, what’s the advantage and disadvantage of self-propelled one? A: self-propelled crack sealing machine is improved on the basis of trailer crack sealing machine, confined to movement during the construction, not recommended for long-distance transition; it can improve efficiency with the flexibility in the construction. 12. Q: What are the principles and advantages of recirculation piping system? A: It can accelerate the speed of sealant melting, reduce energy consumption (diesel), and also keep the temperature of sealant uniform to improve the effect of crack sealing. 13. Q: Why is the price of our crack sealing machine is higher than other manufacturers? A: ①Superior performance, the core components are imported; ②After-sale service network and team effectively guarantee high quality of visits, maintenance, repair; ③12 years of industry experience, strong brand culture; ④Full range of equipment, high selectivity for customer, rich product chain, once in place.