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As a cable fixing device, the feeder cable clamp is suitable for communication base stations, direct-release stations, indoor coverage systems, wireless paging and microwave communication systems, and plays a fixed role in the distribution of transmission cables in towers, walk racks, indoors and outdoors, as well as in subways and tunnels, and can be used in different high and low temperature ranges. Feeder clamps are economical, durable and reliable, so they are widely used in many communications projects. The feeder cable clamp is composed of metal parts and plastic parts. The metal parts, using Q235, 201, 202 and 304 stainless steel and other high-quality materials, and after plated Dacro technology treatment, to achieve surface acid resistance and high toughness performance, so that it can be in the open air for a long time without deformation, non-oxidation. And in order to avoid the installation process caused by hand injury, C-type bracket each sharp edge is used inverted burr process, thus achieving a beautiful appearance and safe double effect. When the feeder cable is installed with a feeder clamp, if it is vertical, the distance between the feeder clamps is less than 1.5 meters, and if it is horizontal, the distance between the feeder clamps is less than 1 meter.feeder clamp,coaxial cable clamp,Leaky type cable clamp. Requirements for Feeder Cable Clamp 1. Metal parts require a smooth surface, no burrs, scratches and other mechanical damage, no rust. 2. Plastic parts require uniform color, clean surface, no cracks, no bubbles. 3. Pressure resistance for plastic clip: According to the normal installation method to fit the cable clamped in the feeder clamp, apply the specified torque on the fastening nut . After the experiment, the cable is not damaged and the plastic clip is not cracked. Drop the assembled feeder clamp from 3 meters high into the concrete floor in free fall form and repeat 10 times. After the test, the plastic clips and metal parts are not deformed or cracked. 4. Metal anti-bending: According to the normal installation method of the metal fixing piece clamped to the metal frame, apply the specified torque on the fastening nut, maintain for 24 hours. After the experiment, the elastic deformation of clamping port is less than 5mm and the rest is not damaged. 5. Clamping force: Apply a specified force along the axial direction of the normally clamped cable for 24 hours. After the test, the relative displacement of the cable and the plastic clip is not greater than 2mm without mechanical damage. High temperature 85°C, low temperature -40°C and holding force at vibration (The frequency is 10Hz and the amplitude is ± 3mm vibration time of 8 hours). 6. Chemical corrosion: 96 hours of continuous salt spray at 5% NaCl solution (pH between 6.5-7.2), temperature 35°C. After the test, the surface of the metal parts is free of rust, the plastic clips and rubber surfaces are not hardened and cracked. 7. Xenon lamp aging: xenon lamp power 6.5kw, blackboard temperature 63°C, studio temperature 45°C,  relative humidity (65±5)%, rainfall cycle 18min/102min (water spray time / no spray time), radiation energy 462W/m2, maintained for 300 hours. After the test, the plastic clips and rubber are free of cracking and hardening.

Since the beginning of international shipping in the second half of last year, sea freight rates have been "stepping up" like bamboo festivals, and there seems to be no stopping at all, and the main factors affecting sea freight rates are port congestion and container shortages. The Suez Canal is blocked and the recent salt fields are blocked. Impact of the Yantian Port outbreak? It takes 1 to 3 months to clean up the accumulated containers! Delays continued at Nansha port and Shekou port.feeder clamp,telecom cable clamp,Fiber Optic Cable Clamp. In the short term, these problems will not be solved. At present, the phenomenon of delaying ships in guangzhou port of Shenzhen is very serious. Ningbo and Shanghai ports are better, other ports are a mess. In addition, shipping charges are likely to rise in July! Short-term freight from China to northern Europe is known to have passed the $20,000 mark for every 40 feet, while trans-Pacific routes to the west coast of the United States have been driven by some carriers for as much as $25,000. On Monday, industry insiders revealed that they had received a shipping fee report from Shanghai to Los Angeles. In July, the top five shipping companies offered $28,000 per 40ft for shipping from Chinese ports to Felixtowe and Southampton, with an average price of about $18,000. Although these sharp increases include an additional fee to ensure the availability of equipment and space, some shippers complain that their shipments are still being delayed. "We paid their ridiculously high price, thinking it was over, but then we learned from the local agent that our box was still at the dock and the shipping company wanted more money before we could ship the goods", the Shenzhen freight forwarder revealed. Apparently, the FAK they insist on charging for the next ship will rise again, which means that their so-called premium is worthless. As the peak season approaches, shippers in Europe and the U.S. need to prepare for another round of FAK and GRI rate hikes on July 1st, possibly starting in the middle of this month, with thousands of dollars in PSS (peak season surcharges). The price from China/Asia to northern Europe this week was $10,979 per 40 feet, according to the Baltic Baltic Index. Prices from China/Asia to the east coast of North America are $9,891 per 40 feet. Prices from China/Asia to the West Coast of North America are $6905 per 40 feet. Prices from China/Asia to the Mediterranean are $11,098 per 40 feet. But as the cost of extras and a lot of other costs increases, the gap between the spot market index and the actual rate paid is widening every week, which means that if you want to ship, you're offering a much higher real price than the market announces.   We believe that we have experienced numerous "sky-high sea freight charges", so we naturally understand this. To ship or choose to ship as early as possible.

Where does steel come from? The main raw material for ironmaking is iron ore, and the main ingredient of iron ore is Fe2O3, without carbon; The second raw material for ironmaking is coke, and part of the coking carbon remains in the molten iron during the ironmaking process, resulting in carbon in the molten iron. The production of iron and steel is made of iron ore, and pig iron is used as raw material for steelmaking; The process of steelmaking is mainly the process of carbon removal, and the carbon cannot be removed, and the steel needs to have a certain amount of carbon to achieve the best performance.Fiber Optic Cable Clamp，Leaky type cable clamp，coaxial cable clamp. In order to improve the performance of steel, on the basis of smelting carbon steel, some alloy elements need to be added. Pig iron (cast iron) – 2.0 to 4.5% C Steel (carbon steel) - containing C is 0.05 ~ 2.0% Wrought iron (pure iron) - contains less than 0.05% C Iron ore → pig iron → steel Therefore, steel is an alloy of iron with C (carbon), Si (silicon), Mn (manganese), P (phosphorus), S (sulfur), and a small number of other elements. Among them, in addition to Fe (iron), the content of C plays a major role in the mechanical properties of steel, so it is collectively referred to as iron-carbon alloy. It is the most important, and the most used metal material in engineering technology. According to the carbon content, it can be divided into: According to the different carbon content, carbon steel is divided into low carbon steel, medium carbon steel and high carbon steel, with the increase of carbon content, the hardness of carbon steel increases, the toughness decreases. 1) Low carbon steel - carbon content ≤ 0.25%. 2) Medium carbon steel - carbon content > 0.25% ≤ 0.60%. 3) High carbon steel - carbon content >0.60% According to the total content of alloying elements: In order to improve the performance of steel, on the basis of smelting carbon steel, adding some alloy elements and refining steel is alloy steel, such as chrome steel, manganese steel, chromium manganese steel, chrome nickel steel and so on. Alloy steel, also known as special steel, has some special properties, such as high hardness, high wear resistance, high toughness, corrosion resistance and so on. Alloy elements often added to steel are Si, W, Mn, Cr, Ni, Mo, V, Ti and so on. According to the total content of its alloy elements, it can be divided into: 1) Low alloy steel - the total content of alloying elements ≤5%. 2) Medium alloy steel - the total content of alloying elements is 5% to 10%. 3) High alloy steel - the total content of alloying elements > 10%. Alloy steels are classified according to their use: 1) Alloy structural steel: used as engineering components (pipes and brackets, etc.); Various mechanical parts (shafts, gears, springs, impellers, etc.). 2) Alloy tool steel: used as measuring tools, molds, tools, etc. 3) Special performance steel: such as stainless steel, heat-resistant steel, etc., with special physical properties or chemical properties.

In 2020, Huawei and ZTE, with the help of the three major domestic operators, 5G equipment shipments had been among the top communications manufacturers. And the three major operators were so aggressive in the procurement of Huawei, ZTE communications equipments, in addition to the two manufacturers more brilliant technology, supporting and caring for Huawei and ZTE were also well-known reasons.feeder clamp,cable clamp,Leaky type cable clamp. But according to the latest news, the attitude of the three major operators towards Huawei and ZTE is quietly changing. Not long ago, China Mobile announced the first and second parts of the collective procurement of smart home gateway products from 2020 to 2021, Huawei and ZTE were far behind Nokia and Ericsson in their share of orders. In particular, the second part of the results, worth 1.68 billion equipment orders, Huawei directly out, ZTE scoreless. Nokia, which had previously lost China's 5G market, was the biggest winner, taking 32 percent of orders. Both purchases showed that Nokia was the biggest gainer. In fact, many people were surprised and puzzled by this situation. China Mobile chose Nokia probably because Huawei couldn't meet China Mobile's demands, after all, Huawei is currently under sanctions and has trouble buying chips. Moreover, COPN smart terminal equipment prices are not high, the number of products corresponding to the order is quite large, preparation of raw materials, manufacturing and production for Huawei, are no small trouble.