Clodinafop propargyl is a kind of farm weed killer, used after emergence for controlling and killing off annual gramineous weeds of the cereals, including wild oats, ryegrass, green bristlegrass, etc.

Clopyralid is a kind of strongest herbicide, which is used for controlling and killing off broadleaf weeds such as polygonaceae, compositae, leguminosae, umbelliferae, etc.

Difenoconazole fungicide is widely used in fruit trees, vegetables and other crops to effectively control blackspot, blackpox, white rot, leaf spot, powdery mildew, brown spot, rust, stripe rust, scab, etc.

Chlorpyrifos has no harm to most crops at the recommended dose and is the best alternative to high toxic and high residual pesticides. Applicable to rice, wheat, cotton, fruit trees, vegetables and tea trees, etc.

Azoxystrobin products have good activity to almost all fungal diseases, such as powdery mildew, rust, glume blight, leaf spot, downy mildew, rice blast, etc. Used in grain, rice, grape, potato, vegetable, fruit tree and other crops.

Rubber fenders are developed in wide range of variations to serve different applications. Rubber Fenders decrease the input reaction force and provide requisite angular guidance to the hull pressure. These are the fenders which have highest market demand. These fenders also have a positive impact on rubber industries round the globe. There noticed a great advancement and growth of rubber industry due to marine application of rubber in last ten years. There are many types of marine rubber fenders, manufactured by different shipping accessory companies, which are detailed as follows:

Super Cone Fenders: These are the latest sort of rubber fenders and generally referred as “Cone Fenders”. The conical body of the cone fenders keep them stabilised at even higher values of compression angles. They are highly efficient and provide optimum performance. They have better resistance to shear and over-compression. Their geometry plays a significant role in their stability. Today, rubber compounds find their widespread application in marine industry and extensively used for manufacturing of Cone Fenders.

Cylindrical Fenders:They are the most basic and common fender systems used in today’s times. They can be used for all types of marine marines and ships and they are quite economical too when the aspect of fitting them up is taken into account.

These are easy to install, widely used fenders with simpler design. They can serve to both large as well as small vessels. As per the requirement of cylindrical fenders, these are available in three size categories: Small Cylindrical Fenders, Intermediate Cylindrical Fenders and Large Cylindrical Fenders. These fenders are economical and have thick walls which can efficiently resist wear, abrasion and higher loads.

Pneumatic Fenders: pneumatic fenders are the ideal choice for inter ship dealings and port accessories. Their deployment is quick and robust. At the time of docking the pneumatic fenders minimize the risk of damage and safeguards both people and cargo. These fenders should comply with quality assurance guidelines of ISO issued in 2014. These are of five types namely: chain-tire net (CTN) pneumatic fenders; Sling type fenders; low pressure pneumatic fenders; hydo-pneumatic fenders and. The CTN pneumatic fender has a network of tyres connected with chains in horizontal as well as vertical direction to protect the fender body. As the chains remains in water all the time so must be made up of corrosion resistant galvanized materials. These are simplest and cheaper type of marine rubber fenders which increases the clearance between structure and the hull to a larger extent. Sling type pneumatic fenders are similar to chain type fenders with the only difference that fenders can be slung with even ropes made up of meshed wire strands than chains. Low pressure pneumatic fenders are the type of pneumatic fenders which deliver minimum pressure to the hull by absorbing kinetic energy to a maximum extent by providing maximum contact surface. Hydro-pneumatic Fenders: These are the pneumatic fenders which are made in compliance to the need of fender.

W Fenders: W fenders are used mainly to aid the larger ships and marines because they offer a high rate of resistance and thus better protection to the water-crafts in case of any accident occurring.

These marine rubber fenders should be capable of serving all their commitments in all environmental conditions. The marine rubber fenders should be durable and they are designed to serve a longer period of time. So durability and strength are the main factors for the selection of any kind of fender.

If you buy warehouse shelves, should pay attention to what?

1. Suggested friends according to your actual unit, from the following aspects of shelf standards:

2. Mainly for the quality of the shelves, no quality below all are false.

3. Warehouse use area, space height;

4. Warehouse to be used with height, space retention height;

5. According to the weight of the goods to be stocked to calculate the weight per unit area;

6. According to the warehouse area, reserved walkway, shelf clearance, to determine the unit shelf area

7. Calculate the carrying weight of the shelf monolayer according to articles 3 and 4, and establish the number of shelves. We use the result of the fifth as shelf standard.

Also note the following:

1, the goods characteristics:

(1) the shape of goods: the shape of goods, size, length and other factors related to the specifications of the shelf;

(2) the weight of goods: choose the appropriate strength of the warehouse shelves;

(3) cargo storage; card board, storage cage, cardboard boxes, plastic baskets and so on.

2, cargo handling:

(1) manual work; (such as the use of layered shelf)

(2) mechanical operations. (Such as forklift)

3, cargo access:

(1) accessibility;

(2) storage density.

4, warehouse structure: such as space height, fire equipment and other factors.

For more professional knowledge, please visit the page of warehouse shelves articles.

A variably baggy or cambered web will cause the web to track toward the variably tighter side. Variabilities in roller traction or drag can cause a steering of the web. Changes in tension will cause changes in how straight the web travels downstream. At zero tension, edge position control is essentially lost. However, there are other edge movement factors which include nip roller draw variations, aerodynamics and so on. Web guides are used to bring the edge or center of a web to a specific CD position. The guide location may be at an unwind to get the web started down through a machine in a consistent position, at an intermediate location, or at the winder to improve roll edge quality. The accuracy demands for the guide may vary from merely keeping the web on the rollers, to minimizing trim loss, to registering several print colors to within a couple of mils. Guides may be either active or passive.

What is an acceleration offset

One of the most troublesome of the edge position excursions is known variously as the acceleration or ramp offset. Here, the web moves sideways when machine speed is increased or decreased. Usually the rate of movement is most severe at the top and bottom of the speed change rather than on the speed ramp itself. Unfortunately, the term “acceleration offset” belies the true nature of the cause of the edge movement. Indeed, the web does not even know how fast it is moving.

In the case of absolute traction, the web will conform to the Normal Entry law on all rollers, including the one that is misaligned. Note how the web moves over as the result of this misalignment. In the case of pure flotation, however, the web is not steered by the ‘roller’ and, thus, passes straight through the machine. The case of sliding is intermediate in that there is a small offsetting of the web.

Thus, every roller or element that touches the web also steers the web. However, if the roller is stationary and the state of traction constant, the path of the web will remain constant. That is not to imply straight. Obviously the web will snake through the machine in conformance to web handling laws.

However, if the web changes from full to partial tracking the path of the web will change slightly in response. This change in traction will be subtle and not easily picked up by conventional observations and measurements. Nonetheless, it will cause the web to move in response.

While there are many ways the state of traction can change, the most common is due to a tension change on a lightly wrapped roller. This means that if our drive allows tension variations, the web might shift slightly on some of the rollers. Furthermore, the condition which is most difficult to hold tensions is during a speed change.

Thus, as we not see, the acceleration offset is not due to the speed or speed change itself, but rather due to tension variations that can and will accompany the speed change. Our first efforts should then be to tune the drive so that tension is held well at sensors (load cells) as well as elsewhere where there are no sensors. Sometimes tension is held well only at the drive points or sensors, but not elsewhere because the web might be pulling against excessive roller inertia or drag.

However, we can also expect to reduce the severity of the offset if we reduce roller misalignment or other geometrical problems. The surest way to do this is through optical alignment of every roller in the line because even the lowly idler is as capable of shifting the web as any of major process rollers. However, sometimes it is not the roller, but rather an airfloat oven, that is steering the web.

If you want to keep your web as uniform, flat, and baggy free as possible. This is because the web with profile troubles will merely exaggerate the difficulties discussed here. Only when material and machine are made true will edges run consistent.

How does the web guide system work?

Active web guide system is composed of a sensor, an actuator, and a controller, which is a high-efficiency edge position control. The sensor can be any detector which can reliably pick up the edges of a web. The most common are pneumatic (nonporous webs), photoelectric (opaque webs), or paddies (thick webs). The web must be flat (free of curl) and stable (free of flutter) through the edge sensor. For this and other reasons, the sensor is often placed near a roller. If two sensors are used, the web could be guided to the front edge, back edge, or center.

The output of the sensor goes to a controller which outputs a movement command to the actuator. If the gain of the controller is too low, the response of the guide will be sluggish and slow to correct. If the gain of the controller is too high, the guide will be hot but overshoot, or may even be unstable. The actuator which moves the guide mechanism may be a stepper motor and ballscrew for smaller assemblies or a hydraulic cylinder for larger assembli`es. The actuator and framework must be stiff for responsive operation.

For more professional knowledge, please visit the page of web guide system articles.

The production of marine rubber fenders has moved from the manufacturers that developed them to lower-cost producers, with no heritage knowledge of the products they currently make. This has created a disjoint between the manufacturers and the people that design and sell the end products. Complicating matters, there are no true standards governing the ‘nuts and bolts’ of fender design. There is little to assist in the design of cost-effective fenders. Furthermore, there is little understanding of neither what actually causes fenders to fail, nor how buyers can optimize their fender lifetimes.

Standards are of little practical help

The bad news for those looking to invest in new fenders is that the most critical issues for successful rubber marine rubber fenders are not covered in any standard. Current standards and guidelines deal primarily with broad theories and virtually not at all with the simple details that make virtually all the difference between troublesome and robust designs.

The only extant standards deal with these general theories, the proprietary design of specific rubber fender elements (not the entire fender), and/or the assessment of the energy capacity of fender elements. The most widely used guideline for the design of fender systems is Guidelines for the Design of Fenders (sic) Systems: 2002, published by the International Navigation Association (PIANC). It gives guidelines for determining energy requirements, but no details of how to design a fender system. Its six-page Appendix A, ‘Procedure to Determine and Report the Performance of marine rubber fenders’ is the only section of this seventy page document familiar to most fender specifiers. However, not only is Guidelines…not a standard, but due to errors in the final editing process two critical sections were reversed. The result is that for the majority of testers a critical part of the procedure description is likely unintelligible. Thus, its actual usefulness is limited.

This is not as much of a problem as it otherwise would be, because the same year Gudelines… was published, ASTM International, the largest standards-writing organization in the world, issued Standard F 2192, ‘Standard Test Method for Determining and Reporting the Berthing Energy and Reaction of marine rubber fenders’. An important revision was issued in 2005. This is the document that the performance testing part of Appendix A was intended to be, and it is the only standard for determining the performance of marine rubber fenders.

ISO 9000 certification is not necessarily any assurance. Achieving ISO 9000 status requires that a manufacturer produce a consistently-repeatable product, and document it, but does not require that it make a product that is fit for service. On balance, it is better than nothing but not a magic bullet.

My own experience has led me to believe strongly thatall the worry about measuring fender energy and reaction is a tempest in a teapot. Investigations of many fender problems, multiple types and manufacturers show that inadequate fender performance (energy and reaction) is almost never the primary cause of fender problems.

Also, seldom is fender compression deflection a cause of fender failure. Often specifications stipulate that fender deflection shall not exceed a certain percent of undeflected height (for durability concerns). Actually, fenders designed to have a greater rated deflection operate at a lower strain and stress level than ones designed to deflect less.

Specifying rubber

The ultimate useful life potential of any rubber product is controlled by its chemistry. Aging and ozone resistance of the rubber, from which fenders elements are molded, are two of the most important criteria that determine useful life potential. Most fender specifications don’t specify rubber ozone resistance at all, and many specify an acceptable aging resistance that is considerably lower than it could be for maybe one per cent higher cost.v

For more professional information, please visit the page of ysmarines.com.

In general, light warehouse shelves, medium-sized warehouse shelves, heavy warehouse shelves are common storage shelves. The structure of these storage shelves mainly in the following areas:

The first thing to say is the light warehouse shelves, its structural features are: universal angle steel column, plug assembly structure, warehouse shelves can be arbitrarily combined, generally steel plate, layer height every 50 cm arbitrary adjustable installation easy , The appearance of lightweight and beautiful, manual access to goods, commonly used to store light items, and its capital investment, can be widely used in electronics, light industry, supermarkets, culture and education and other industries.

For the medium-sized warehouse shelves, the structure of such storage shelves features: plug-in modular structure, the standard group of components, do not have a connecting bolts, warehouse shelves to install and remove quickly and easily, the board for the cut, Strong closed steel layer, and the bottom of the board with a reinforced or reinforced ribs, height of every 50 cm height adjustable, the unit shelf load per layer can reach 400 kilograms, square column, the number of positive punching Less, so that storage shelves more stable and elegant, widely used in all walks of life.

Finally, it is said that the characteristics of heavy-duty warehouse shelves, it is a combination of beam-type shelf shelves shelf, belonging to the ladder-type beams, the general can be configured steel lumber or wood laminated board, the height of every 50 mm arbitrary Adjustable, the unit shelf load of up to 800 kilograms per layer, size specifications according to customer demand tailored, the structure of such storage shelves suitable for use in the manufacturing industry and other industries.

Loft shelves, usually using medium shelf shelves or heavy shelf shelves as the main support plus floor panels (depending on the total load weight of the shelf unit to decide which shelf to use), floor panels are usually selected cold rolled steel floor, pattern steel floor or Steel grating floor.

In recent years, the use of cold-rolled steel floor, it has a strong carrying capacity, good integrity, good load uniformity, high precision, smooth surface, easy to lock and other advantages. There are many types of optional, and easy to match the lighting system, Take, management is more convenient. Floor design according to a variety of installation conditions can be easily assembled in the field, without welding. Loft shelf systems in the field of auto parts, automotive 4S shop, light industry, electronics and other industries have more applications.

Arise web guiding provides a high precision edge or marking line control with advanced technology and professional certificates, the most competitive price guaranteed.

How to install the web guide system

Mounting

1. Make sure to install the guide correctly according to the direction of the roll paper and the marks on the roller platform. The sensor must always be downstream on one side of the material flow.

2. Fix the guide on the machine by using the supplied bolts.

3. Tighten each bolt with a wrench by hand until each bolt is firmly locked. Do not tighten the bolts.

Installing the sensor

1.The sensor assembly consists of a sensor head, a sensor connection cable and two sensor carriages with M3 thumbscrews. All these elements are shipped from the factory.

2.Assemble into a ready-to-install unit.

3.Each sensor carriage will have a locking thumbscrew. Loosen the two thumbscrews to allow the carriage to slide into the sensor guide, which is installed under the roller assembly on the downstream side of the roll paper guide.

4.There is a filter cover (infrared or visible filter cover) on the surface of the sensor. When the sensor assembly slides into the guide rail, make sure that the filter cover faces the roll paper material.

5.After installing the sensor to the sensor rail, install the plastic end cap on the end of the rail. Clip-on plastic end caps are usually equipped with roll paper guides.

6. After installing the sensor, connect the sensor connector at the end of the sensor cable to the sensor port on the connector interface on the other side of the housing assembly.

Pre-wired

In the pre-wiring option, the equipment may be supplied with a 2.5-meter power cord (via compression nut) for customers to connect to a properly grounded 24 VDC power source.

Grounding

For safety and normal operation, a web guiding system is equipment used by the web and the installed guide plate must be properly grounded. The ground screw on the back connector is to connect the ground wire interface.

For more detailed information, please visit the article page on how to install an all-in-one web guide system.

CHAL Aluminium Corporation proudly supply the largest range of retail and wholesale aluminium products directly online and in store. From aluminium tube to aluminium profile, finished aluminium products and more, we can customise each item, cutting it to your preferred length or size. Whether it’s a D-I-Y home project, a small trade task, or an extensive job, our substantial range of aluminium products will satisfy your needs for any business, big or small.

If you’re a member of the public, a trade customer or after a wholesale product, our experienced staff will happily assist you with all your aluminium needs and can often provide you with practical advice, in turn saving you time and money on your project. Simply visit our website, or get a free quote online and choose from a wide range of popular aluminium products here.