First of all, to be familiar with fishing gear, fishing gear materials. What is the material used for fishing tackle. The standard SCT for agriculture and aquaculture is defined as fishing gear. In marine and inland water sources, the tools for catching aquatic animals directly are called fishing gear. In the SCT50011995 standard, the fishing gear materials are defined. The materials used to equip fishing gear mainly include cable, mesh, rope, float or sink to the fishing gear. But you may have noticed that the aquaculture and freshwater aquaculture cage cage just unfolding a are not talked about, according to my personal point of view, should belong to the cage and fishing, but at that time, why are defined in this standard, no concept of the cage, the two main standards in 1995, at that time we cage, is not as heavy, so the standard drafters didn't cage induction in the definition of the two standard. Of course standard is a very hard heavy work, I can only say this on behalf of personal opinion.

        According to the definition of fishing gear, the total number of fishing gear in our country is very large, and can be divided into 12 major categories. If we add the cage, we will become the 13 major categories. The following categories of fractal, shape, following fractions, there are a variety of fishing gear, variety, at least there are dozens of species, but the largest amount of use, the output of aquatic products in our country, the largest five. One is dragnet, Zhang Wang, fluent net, purse seine, breed net cage. The main materials for making fishing gear are wire netting, netting, ropes, floats, sinks and other accessories.

        In human history, fishing will be on the front page, so the fishing industry has become an industry of our most ancient, it has a long history, mankind for thousands of years, with fish fishing tools, they are all natural materials, including stone, metal, bamboo, wood, cotton, hair, silk so, our country since 1960s, in fishing gear, by gradually replacing the natural fiber synthetic fiber. Fishing gear and fishing tackle materials began in 1980s, and announced the formation of synthetic fibrosis. Compared with natural fiber synthetic fiber, with high intensity, the proportion of small, small amount of water, some water, corrosion and long service life. The efficiency of synthetic fiber manufacturing, fishing efficiency is also far higher than natural fibers. Many people engaged in marine fishing, or fishing gear, think that synthetic fibrosis is a major revolution in fishing gear production. At present, there are dozens of known synthetic fiber, the domestic fishing total there are seven kinds of commonly used, and our fishing on the most commonly used five kinds, respectively express b-lun, polyethylene, polypropylene, commonly known as the PE code; PP code; polypropylene, polyamide, commonly known as nylon, nylon, polyester PA code;, commonly known as pet, named PES or PET; polyvinyl alcohol, commonly known as vinylon, vinylon, named PVA.

        At present, the market sells a variety of fishing gear materials, products, mainly based on our recent several surveys on the market, the main existence of several problems:

        1. On the market, "three noes" products are extremely high. People's Republic of China product quality law, article twentieth stipulates that the sale of products must indicate the product name, specifications, grade, manufacturer, address and so on, but from our current investigation of main fishing gear materials market for more than a dozen provinces and autonomous regions to see, the "three noes" products accounted for a very large proportion. 

        2. Shoddy products. The product is shoddy in polyethylene, polyethylene products in the most prominent, with a rope, recycled polyethylene twine production ratio is relatively high, and our businesses basically on polyethylene products do not explicitly take can cheat the cheat means, in this kind of product only reached a new technical standard the product is about 50%, and even lower. Of course, the cost is much lower. 

        3. Product specification confusion. Many shops in the large size rope posing as small size sales, because the rope is sold by weight, if we fishermen friends to buy 20 mm diameter rope according to technical personnel requirements, stores tend to a diameter of 22 mm or more thick rope to you, let you in need of the length of the rope, spend money, increase the cost of production, and it is also a waste of resources. 

        4. Duanjinqueliang. Some vendors use the fisherman forthright, has extensive features, tricks on the said above, the most common way is put a weight on the part is cut off the lead, so that the weight is far greater than the actual weight of sales. And our fishermen friends, often after buying products, nor to say more, in fact, there is no place to say, but directly take it to use. I suggest fishermen friends, in the purchase of materials, to leave a little mind, look at our shop owner has nothing to do with what the hands and feet in the said above, the harm you. There is a method of synthetic fiber water quantity is small, or is not in front of my water, we said, but the nylon moisture content can reach 7 - 8%, so after the nylon ordinary fishermen friends bought, how much do fluent network, in the production workshop, after spinning, must enter the drying workshop dried, or dried in the natural environment, and film bags. Some enterprises in order to pursue improper profits, reduce drying or dry this process, the water facilities directly with the film bag packaging sales, this is also a form of a duanjinqueliang. 

        5. Confusing product name. Some vendors take advantage of the weakness of our Fisher brothers' lack of product knowledge, which is made of polyethylene, polypropylene products and polyamides, nylon, nylon, and nylon. The price of the previous two products is only about half the price of the latter. A lot of fishermen friends will ask me, how can I buy a reliable product? I say to you, according to our years of survey and evaluation test, draw such a conclusion, generally speaking, many countries or industry famous brand product quality is reliable, the quality of the products of large enterprises than small enterprises and reliable, indicate the product name, trademark, manufacturer specifications, product quality than the "three noes" products reliable quality. Fishing nets, wire rope products, is an additional high energy consumption, labor intensive and low technology products in our country, the overall supply and demand is far greater than the present state, as everyone knows, the global energy especially the petroleum shortage, polyethylene raw material price in 11000 yuan / ton, coal, electricity, oil in China is also very scarce, the rising price of some fishing nets, ropes, cable production enterprises, in order to reduce the cost of the products "become, prevent cordelle water tide" in the process, they are used in steam or electric heating, steam heating and electricity because of the relatively high cost of energy consumption is relatively large, it will switch to liquefied petroleum gas, or coal stove for fire wood the heating, the heating process due to uneven heating, can not guarantee the "cable water tide" is always in the boiling state, the product quality is not stable, twisting net made of monofilament Basic materials, unstable basic materials, intermediate products can be stabilized, this phenomenon is mostly manifested in the "three noes" products and small enterprises in the middle.

        How to identify fake and shoddy products? To identify the quality of the products is not reached the national and industry standards and requirements on the eyes, touch is difficult to make a correct judgment, any one of the experts in the industry can not do this, must ask professional inspection agencies to test, to be able to make accurate judgments. But for some fake and shoddy products, you can use the eyes to see, nose sniffing, hand touch, clap, play, and other simple methods can also be identified.

        In general, recycled material production lines, rope, dark colour, the main raw material is recycled, waste color of the inside of a shallow depth, in order to cover up the color, general manufacturers to turn them into dark green, dark green or black, is mainly in order to cover the color of recycled materials, but also not all products are recycled material production, because according to need, also use the deep color. If the product produced with recycled materials is not very deep in color, it is a light color, and this product has obvious color difference in appearance. As the saying goes, this color is flower. Recycled products are rough in appearance, poor in luster and hard to touch. By placing the product in cement, if the powder falls out, it can be determined that the product is not made of recycled material, or that impurities such as talc are doped in the raw material. The nose can also be identified, is to use recycled materials to do nets, rope lines, there is a bad smell or taste. Water immersion method can identify polyamide, nylon, nylon, in general, polyethylene and polypropylene fiber prices are relatively low, when pretending to nylon sales, you can use water immersion method to identify, what is the reason? Because the nylon is greater than the proportion of water and polyethylene polypropylene in the proportion of less water, so just casually looking for a cup or bowl, playing in the water, is a short cut the rope or cable samples, or even pull a few with the wire on the line, put the cup inside, put it down to the bottom of the cup. Gently let go, float is polyethylene or polypropylene, heavy on the ground that is nylon. This is an effective way to quickly identify polyethylene or polypropylene fiber as nylon. 

        Buy reliable quality fishing nets, cables, ropes, should pay attention to the problem. Buy nets, have no holes on the net sheet, or leakage of membrane, membrane leakage is not the so-called network world, see part of the cable net thickness is not the same, the network community should firmly hand tied could slip, the cable end angle regardless of whether you are straight pull, or cross pull, should not appear relatively neat, angular length obviously, angular length in our industry is called happy omentum, this network are often not high strength. When choosing a rope, it is best to use vernier caliper to measure its diameter. Is it the same as that of the seller? In the natural state, the measured diameter is about 5% larger than the standard. It is normal. Because the correct diameter of the rope is calculated in the tensile test of the laboratory, it can be measured only after the tension is applied. It depends on whether the rope strands in the rope are even or not, and the rope in a rope is not the same size, is the twist correct.

        The arrangement of strands should be level and tidy. As the middle of three strands, not a stock is loose, a strand rope is tight, if appear elastic phenomenon, in our industry is called "North", "poor strength North shares", from the comparison of the structure with wire rope is similar, so buy the cable with the rope is the same. However, the cable is not the amount of a stock diameter, but a single line number number, number of shares of a single branch should be said that the cable is the same. Not to be able to appear more shares less stock phenomenon, such as 21 strands, there is a lack of shares already monofilaments, there might be a 16, a 18, so you like this line with the rope, the performance is not neat, "North", "north line shares" we called hemp, hemp covered this kind of cable quality is relatively poor. 

        In addition, there should be no joint or one to two at the end of cable joint angle is normal, the machine lead cable, a cable connection you found a lot, can be judged for the manual twist twist machine cable, cable, cable quality than it came. How many years can a net cage made of good quality nets or a fishing net be used? According to our investigations and experiments, it is no problem to use a net made of new raw materials to make a fishing net mesh, whether you are keeping a net cage or keeping it in a lake enclosure for two to three years. If you use it properly, you'll live longer.

        Some people ask:  "what's the proper use ?" ,I'll introduce you, resulting in synthetic fiber aging, the main factor of strength reduction is the destruction of the ultraviolet rays of the sun on the molecular structure of the fiber, many fisherman will find the cage above the water surface or under water blocking than bad fast, especially the bad part of the fastest line. This is the result of ultraviolet damage to the molecular structure of the fiber, because the water surface reflects sunlight, so the fishing nets near the waterline receive the most ultraviolet rays in the sunlight, and therefore the worst. Under water, because the sunlight is absorbed by the water, greatly reducing the fiber aging process, so it is not easy to bad, to understand this truth, we can put the cage or fishermen blocking water or under water with a rotation, or don't let mesh waterline portions are fixed in that place, but think of a way to get to a mesh surface increase, or to water down a little. This will extend the service life of the net cage or the block. When cage or block is not used, they should be put away and stored in a light, ventilated and dry place. They should not be exposed to the sun and rain, so that they can shorten the service life in vain. 

        Of course, there are also some fisherman asked me, I don't want to buy my cage or buy nets or can be used for two to three years, I only a year is enough, or I use a few months is enough, and the fisherman said, in some places is not very important, anti it is not by what force I can not buy the product that recycled materials cheaper to do? I don't think so.

        In fact, this view is completely wrong, is the lack of product knowledge, influence of cable rope, safe use, the technology is important indicators of fracture strength, based on our detection cable products do, in a same diameter, or the number of single cable rootlet under the condition of the breaking strength of the latter is about 50%, some even only 30%. Such a use of renewable materials do not only nets, short service life, but also in the farming and fishing process, inevitably, the phenomenon of escape of fish nets. Because the cable or cable nets or should take 100 kilograms of fracture strength, the results you sell the recycled material to do with cable, although the thickness of new raw materials do the same line, but the actual strength of only 30 kg, 50 kg, of course you want to escape the net of fish. 

        When fishing, fishing nets were lost, aquaculture cages broken, fish fled, is not the quality of fishing nets and rope is not good? I can tell you some production accident, is indeed due to the net or rope is poor, such as the 1994 Zhejiang area of Zhoushan Province, the fishermen brothers, because the use of inferior polypropylene rope, the rope breaks because many floating pan net, some fisherman was injured, causing great loss of property. This is a typical example of poor product quality accidents caused by production, but also some of their specifications of small fisherman, cause we lost the net, net accident, this is like building a house, should be 20 centimeters in diameter made of wood beams, the house will not fall, but due to you in 18 cm wooden beams, the house down, you can say that is not good quality wood beams. So whether it is fishing nets or fish cage, using heavy wire and rope, to go through the calculation to determine the science, fishing net crack of different operation area of different size, different places, fishing nets, and different culture object, different culture, different breeding density, selected the cable and rope diameter is different, if we can not accurately grasp the fishermen's knowledge, can consult some professional knowledge staff. 

        Fishing nets, rope, cable, there is public opinion, judging the quality of gas is not qualified national and industry standards? I can answer you clearly, I have talked about those lines, nets, ropes are the current national or industry standards, fisherman purchase products, should be to the manufacturers or stores, which inquire products meet the standard, or the enterprise standard, so when the enterprise technical indicators should be more stringent than the national standards and Industry this is the standard, the provisions of the People's Republic of China standard method. You know the state and industry standards by Chinese agricultural quality standard, or China National Standardization Management Committee web search, can also refer to the national fisheries standardization technical committee of fishing gear and fishing gear materials classification advisory committee. What if we buy inferior products or have doubts about the quality of our products? Here, I tell you that if you sell commercial recycled materials to new products and sell them to you, you can complain to the local industry and commerce administration or to the local consumer associations. The key is our fishermen friends when purchasing the product, must obtain invoices to the store, above the invoice should indicate the name, specifications, quantity, unit price and so on, do not think that it is for my own use, not to invoice no, if you do not have to store then obtain invoices, the quality problems, to the relevant departments complaints become no complaints according to the management, it is difficult to deal with, it is difficult for you to do justice, justice, if you buy the product quality question or the fisherman, the occurrence of some quality dispute, and manufacturers and sellers together, to the professional inspection institution with legal the status of application for inspection, I want just to introduce some fishing gear and fishing gear material knowledge, for our friends in the fishermen. Buy nets, nets, ropes when some help.