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Overview of Rock Reamer Hole Opener The rock reamer hole opener produced by Cangzhou Great Drill Bits Co.,Ltd. is used to expand the diameter of the pilot hole and is mainly used for horizontal directional drilling of oil, natural gas, electric power, and other pipelines. The Rock reamer is designed for reaming a variety of rock formations in the ground. The cone part is made up of a milling cutter for soft formations and a carbide insert with hard formation for different formations. The cutting teeth of the cone use TCI cutters or Steel tooth cutters. And the teeth have good wear resistance and the speed of the drill is fast. Intensive palm tip welding and full palm back protection, the cones are divided into back dimension and the diameter is protected by a protective design to effectively enhance the resistance of the drill bits for rock and concrete. Apply wear-resistant alloy or carbide tooth on the front stiffener or block surface. In order to reduce the weight of the rock reamer hole opener without affecting the support strength, the front centralization plate adopts a hollow design. GREAT hole opener uses a sealed high-energy rolling bearing system processed and assembled at an extremely strict tolerance. Each reamer has a sealed automatic compensation lubrication system that balances the internal and external pressure of the bearing and protects the bearing and sealing system. The Advantage of Rock Reamer Hole Opener The hole opener produced by GREAT is a low-torque reamer that can be reamed with a small rig to reduce drilling costs. The cone unit on the GREAT hole opener also can be replaced, and a set of bodies can be used multiple times, saving engineering costs for customers. The production of large-size tricone bit or multi-cone drill bits and reamers is not only difficult to process but also extremely costly. The use of GREAT rock reamer can solve these problems, and manufacturers can produce various sizes of hole openers according to customer requirements. It is one of the biggest PDC drill bit manufacturing companies in Asia and one of the qualified reamer suppliers for CNPC, Sinopec and CNOOC. It is specialized in fluted reamer hdd and hdd reaming, offering directional drilling hdd back reamers and hdd reamers for sale.

Minimum Order: 1 bags

BESTTOP is a commercial fridge suppliers, providing various kinds of commercial freezers. BESTTOP reach ins Only use high-quality materials and components, fast cooling, good thermal insulation performance. It can quickly reach the temperature you want to cool at an ambient temperature of 43 degrees Celsius. The atmospheric design is not only suitable for hotel kitchens, but also for central kitchens, cafes, and tea shops. Besides the reach ins, in terms of BESTTOP commercial refrigerator and freezer, there are vertical commercial fridge. BESTTOP commercial reach in fridge Reach In Refrigerator BESTTOP reach-in refrigerator reduces energy consumption while ensuring the cooling effect. Keep the freshness of fruits and vegetables. Large-capacity internal storage space, easy-to-access shelves or GN Pan, bring users a better experience. Reach In Freezer BESTTOP Reach-in freezer has been loved by customers for its good cooling effect. The temperature can reach minus 22 degrees Celsius within 30 minutes. Precise temperature setting can make food stored longer and fresher. Dual Temperature Reach Ins BESTTOP dual temperature reach ins Adopt dual unit mode. The refrigerator compartment and the freezer compartment are separated left and right. One refrigerator solves all problems of refrigeration and freezing. Advantages of BESTTOP Commercial Reach Ins The Whole Modular Unit Is convenient for directly replacing the unit after sale. Rapid Cooling The powerful refrigeration unit can quickly return to a safe temperature to achieve the highest operating quality and the best food preservation effect. Integrated Stainless Steel Handle Ergonomic, stainless steel made, robust, perfectly integrated handle ensures practical opening of the door that avoids dust and dirt collection, being extremely easy to clean. Intelligent Air Circulation System Perfect temperature consistency with its innovative airflow design that encircles the food and ensures its proper conservation. Removable Pull-out / Push-in Magnetic Door Gasket To keep maximum hygiene and maintain the insulating properties. Intuitive Digital Control Enabling to adjust temperature parameters easily and quickly. Automatic Evaporation Of Defrost Water Hot gas coming from the compressor is used to automatically evaporate defrost water, instead of by means of heating elements,achieving even less energy consumption. 304 Stainless Steel Hinges, Screws, Anti-corrosion, Anti-rust. Easy to change and adjust. The Bezel Is Equipped With Electric Heating Wire. Combined bezel for easy after-sale replacement. Equipped with electric heating wire to prevent condensation on the beam edge. FAQs about Besttop Reach Ins Q What Brand of Compressor is Used By BESTTOP Reach Ins? Embraco or Scope compressors are Available. Q What refrigerant does BESTTOP Reach Ins use? R290 environmentally friendly Hydrocarbon refrigerant. Q What material does BESTTOP Reach Ins use? 201 stainless steel Q What material does BESTTOP hinge use? 304 stainless steel Q How many kilograms can the shelf of the BESTTOP reach-ins support? 40kg for each shelf Q How to realize the automatic defrosting water evaporation of BESTTOP reach- ins? Hot gas coming from the compressor is used to automatically evaporate defrost water, instead of by means of heating elements, achieving even less energy consumption. Q Can the electric heating wire of BESTTOP vertical reach-ins frame be replaced? Yes. Q Can the castors wheels of BESTTOP reach-ins be replaced with feet? Yes, Swivel wheels and adjusting feet are optional.

Minimum Order: 3000

BESTTOP air-cooled glass door under counter refrigerator, clearly displayed, long-term preservation, is the best choice for the preservation of fruits and vegetables in the kitchen. Different sizes and volumes are available. There are 1.2m, 1.5m, 1.8m models of commercial under counter fridge for sale. Perfect temperature consistency with its innovative airflow design that encircles the food and ensures its proper conservation. There are 30 inch undercounter beverage center, 36 inch wine undercounter refrigerator and 48 inch undercounter freezer in BESTTOP product center. STANDARD FEATURES: BESTTOP glass fronted under counter fridge with high functionality for a professional kitchen Self-closing Glass door; with electric heating wire, anti-fog Shelving loading capacity more than 40Kg Self-closing door Integrated handle for easy door opening Stable operation at an ambient temperature of 43 degrees Celsius; climate Class 5 Temperature range of -5˚C to 8˚C on refrigerators OPTIONAL FEATURES: Adjustable legs Caster Wheels Additional shelves Equipment Specifications： Model Cooling type Classification Cabinet Dimensions Net Volume   (liters) Refrigerant Temperature（℃） Power(W) CUR12-2G Ventilated Refrigerator 1200*600/800*850 320 R134a -5~+8 320 CUF12-2G Ventilated Freezer 1200*600/800*850 320 R404a -22~-18 550 CUR15-2G Ventilated Refrigerator 1500*600/800*850 450 R134a -5~+8 350 CUF15-2G Ventilated Freezer 1500*600/800*850 450 R404a -22~-18 580 CUR18-3G Ventilated Refrigerator 1800*600/800*850 570 R134a -5~+8 370 CUF18-3G Ventilated Freezer 1800*600/800*850 570 R404a -22~-18 620

Minimum Order: 3000

Hot Rolled Steel Sheet Production Process The production procedure of HRS is generally as follows: Iron making → steel making → continuous casting (or die casting) → hot rolling process Hot Rolled Sheet production is a rolling procedure that relates rolling steel at a high temperature (usually above 1700°F) and over the recrystallization temperature of hot rolled sheet. When the steel heating temperature is higher than the recrystallization temperature, it can be formed and shaped easily, and the steel can be made to larger sizes. Hot Rolled Steel Sheet is usually cheaper than cold rolled steel because of the fact that it is usually manufactured without any delays and then does not require reheating of the steel (as with cold rolling). As steel cools, Hot Rolled Steel Sheet contracts slightly compared to cold rolling, so there is less control over the size and shape of the finished product. Description of Hot Rolled Steel Sheet Because of its much simpler processing method, hot rolled steel can be easily shaped and formed in any desired form. Hot rolled sheet is one of the most variety of steel in the industry. Because of its ductility, this hot rolled sheet is very advantageous in the production of structural or sectional modules. The main characteristics of hot rolled steel sheets are similar to those of hot rolled steel coils, very similar production procedures and thickness, width, and length define similar physical characteristics, but the post-processing methods are different. In addition, determine the final application and corresponding processing equipment. Application of Hot Rolled Steel Sheet Used in welding and boiler making, hot rolled steel is ideal for construction materials such as railroad tracks and l-beams. Another advantage of hot rolled steel is that the surface finish of hot rolled sheet is not an issue. Typical uses consist of: Structural sections Whether resistant structures Pressure vessels Structural parts, vehicle chassis wheel rings Shipbuilding, marine application HUARUO Industrial Group Co., Ltd is a professional prepainted galvanized steel coil manufacturers, we provide Huaro steel, such as steel slab, steel billets, hot rolled steel, hot rolled coil, cold rolled steel, cold rolled steel coil and etc. Want to know more, please contact us.

Minimum Order: 3000

Grease Spray Gun A pneumatic spray grease gun is a tool used for lubrication. It is used to apply lubricant through an aperture to a specific point. There are several common grease spray gun types such as guns made using a lever, hand pump, pistol grip, and an air-powered or battery charged design. Among them, the grease spray gun with a lever design is the most popular, because it is convenient and helpful for a number of projects. ZEGO is a China-based spray gun suppliers, we provide paint sprayer supplies, such as paint spray gun, portable spray gun, industrial spray gun, industrial paint gun and etc. Want to buy paint spray gun or more? Please contact us.

Minimum Order: 100000

Advantages of compact spray guns The compact spray gun is designed to produce laminar or streamlined airflow to reduce turbulence and enhance the atomization process for efficient atomization. The compact spray gun provides an excellent finish with the highest transfer efficiency. It is built for ergonomic comfort, energy savings, and environmental responsibility. The compact spray gun is light and reduces operator fatigue. The new arc-shaped handle makes the operator comfortable, increases finger space, facilitates access, reduces trigger tension, and improves operator comfort. It is easy to clean, has fewer parts and is suitable for everyone. ZEGO is a China-based spray gun factory, we provide spray gun, paint spray gun, portable spray gun, industrial spray gun, industrial paint gun and etc. Want to know more? Please contact us.

Minimum Order: 100000

What Is industrial ethernet switch poe? In addition to network data transmission, a PoE Switch device is with a built- in Power over Ethernet injector to offer up to 100W Power over Ethernet ( PoE ). It ensures the power supply to devices such as IP cameras, VoIP phones, and wireless access points based on the standards of 802.3af, 802.3at and 802.3bt. H3B developed standard POE devices, rather than old generation POE. When other network devices are connected to our POE devices, the switch will detect whether they are POE-compatible or not. If yes, it will automatically supply power, otherwise, the power supply will stop to avoid the burning of ending equipment. By installing an H3B PoE Switch, it can help save lots of installation and maintenance costs by removing the need to install additional electrical wires and outlets. Besides, customers no need to worry about the burning from compulsive power supply as the old generation of POE products. What Can H3B outdoor poe switch Do for Us? H3B Industrial POE switches are compact DIN-Rail PoE Switches, which are designed for the application in POE needed industrial environments. H3B PoE Industrial Switch series are classified as Layer 2 Power Sourcing Equipment (PSE). The unique design with 100% brand new and pre-examined components, makes it a perfect choice for the use in the following scenes: Oil & Gas Urban Infrastructure Safe Campus Industrial & factory automation Marine & mining Rail & ITS What POE Options Can H3B Outdoor POE Switch Offer? After years of hard work, H3B developed a full range of PoE/PoE+ switches with up to 24-port fiber optic Gigabit PoE+ ports. In order to power high-power equipment over long distances, we also developed models with up to 60 W output per port. In addition, these PoE Switches are defined as Power Sourcing Equipment (PSE). While Ethernet data transmission, all H3B Industrial POE switches are able to provide up to 30 watts of power to the PD(Powered Devices) sides, such as IP phones, IP cameras and all kinds of wireless access points. With a compact industrial-grade design, our industrial PoE switche provide surge protection of 3 kV per LAN port. Furthermore, all H3B industrial POE switches are with compact IP30 housing designs to survive the dusty outdoor industrial sites.

Minimum Order: 500

PCB is the printed circuit board, which is one of the important parts of the electronics industry. Almost every kind of electronic equipment, from electronic watches, calculators, to computers, communication electronic equipment, military weapon systems, as long as there are electronic components such as integrated circuits, in order to make the electrical interconnection between each component to complete PCB board product. By PCB Structure Printed circuit board structure is also very complicated, including single layer, double layer and even multiple layers.They can be divided into single- layer boards, double-layer boards, multilayer boards and double-sided boards. By PCB Hardness Performance PCB board can be divided into rigid pcb, flexible pcb (FPC) and rigid-flex pcb according to the hardness. By PCB Hole In terms of function, the holes can be divided into two categories, one is used for electrical connection between each layers; The other is used to fix or position the components. By PCB Material Conventional PCB provide Immersion Gold PCB, Gold Fingers PCB, Immersion Silver PCB, Aluminum PCB, Lead Free HASL PCB, HASL PCB and OSP PCB. If you would like to learn more about printed circuit boards, don’t hesitate to reach out to the professionals at SPEEDA PCB. SPEEDAPCB YOUR BEST CHOICE SPEEDA Technology is an electronic technology company formed by a team with an average of 10+ years of electronic industry experience.PCB design ltd as one of the best pcb manufacturers in china, the company is mainly engaged in the design, R&D (research and development), manufacturing, and sales of various printed circuit boards. Our mainly product including pcb printed circuit ,circuit board sheet .We provide printed circuit board for sale,printed circuit boards for sale and etc.If you want to know pcb sheet price or pcb plate price,please contact us. SPEEDA, Your Best Business Partner.

Blank copper pcb board is a printed circuit board, also called printed wiring board, which is an important electronic component, the support of the electron component, and the supplier of the electrical connection for the electron component. Since it is made with electron printing, it is called a "printed" circuit board. As the electronic instruments become more and more complicated, the parts they need become much more accordingly, and the circuit and the parts on the board become denser. The blank PCB (without parts on) is often called the "Printed Wiring Board (PWB)". The substrate of the board is made of materials with attribution of insulation, thermal insulation, and inflexibility. The tiny wires can be seen on the surface is the copper foil which had been covered the whole board, but partially etched, then the remaining part formed the tiny netted wires. And these wires are called conductor pattern or electric wiring, which is used for offering the electrical connection for parts on PCB. Generally, the color of the PCB is green or brown, which is the color of the solder mask. It is the protective layer of insulation to protect the copper foil and preventing the parts from being soldered onto the incorrect positions. Silkscreen will be printed on the solder mask where words and marks (mostly white) will be printed in order to highlight each position of the parts. The silkscreen is also called a legend. SPEEDA Technology is an electronic technology company formed by a team with an average of 10+ years of electronic industry experience.SPEEDA PCB design ltd as one of the best pcb manufacturers in china, the company is mainly engaged in the design, R&D (research and development), manufacturing, and sales of various printed circuit boards. We provide empty pcb board ,blank circuit boards for sale .If you want to know blank pcb board price and our product,please contact us. SPEEDA, Your Best Business Partner.

PTH Hole in PCB / PTH PCB There are three common types of drilled holes in the printed circuit board: PCB through hole plating , blind via hole, and buried via hole. Therefore, PCBs are classified according to drilling methods and can be divided into plated through-hole PCB, blind via hole PCB, and Buried via hole PCB. PTH is the most common drilling method, and it is common in various types of PCBs. SPEEDAPCB has been focusing on the production of various PTH (plated through hole PCB-PTH PCB), buried via hole PCB and blind via hole PCB. HAVE A QUESTION OR REQUEST? Click below, we’ll be happy to assist. Drilling Method of Plated Through Hole PCB Plated Through Hole, the copper foil lines between conductive patterns in different layers of the circuit board are connected or connected with this type of hole, but the copper legs of the component lead or other reinforced materials cannot be inserted. The PCB is formed by the accumulation of many copper foil layers. The copper foil layers cannot communicate with each other because each layer of copper foil is covered with an insulating layer, so they need to rely on via for signal connection. The through hole of the circuit board must pass through the plug hole to meet the customer's needs. In changing the traditional aluminum sheet plugging process, the solder mask and plug hole on the circuit board surface are completed with a white net to make its production more stable and the quality more reliable , More perfect to use. The vias help the circuits to be connected to each other. With the rapid development of the electronics industry, higher requirements are also placed on the PCB manufacturing process and surface mount technology. The plugging process for vias came into being, and at the same time, it must meet the following requirements: 1. Only copper is required in the hole, solder plug can be plugged or not; 2. There must be tin-lead in the hole, with a certain thickness requirement (4um), to avoid solder mask ink entering the hole, causing tin beads to be hidden in the hole; 3. The through hole must have a solder resist ink plug hole, opaque, no tin rings and beads, and must be flat. Through-hole boards are common in all fields and are one of the most common PCBs. Generally, the mobile phone board or PDA board has a board that uses a combination of blind and buried holes. The buried hole can reduce the probability of signal interference, maintain the continuity of the transmission line's characteristic impedance, and save routing space. Circuit board design. This type of board requires high technical content and accurate accuracy, so relatively speaking, the requirements for factory equipment are much higher than ordinary multilayer boards, and the cost of such circuit boards will be much higher than ordinary Shelf should be high. Parameters of Plated Through Hole PCB Items Capability. Max board size 580X700mm Boar Material FR-4,Aluminum, High Tg  FR4,CEM3,etc. Min trace width/ space (inner layer) 4mil/4mil(0.1mm/0.1mm) Min PAD (inner layer) 5 mil(0.13mm) Min thickness(inner layer) 4 mil(0.1mm) Inner copper thickness 0.5~4 oz Outer copper thickness 0.4~6 oz Finished board thickness 0.4-3.2 mm ±0.10 mm ±0.10 mm Board thickness tolerance control ±10% ±10% ±10% ±10% Inner layer treatment brown oxidation Layer count Capability 1-30 LAYER alignment between ML ±2mil Drill hole diameter 0.15mm-0.65mm Aspect ratio of plated hole 10:01 Hole precision ±2 mil(±0.05mm) tolerance for Slot ±3 mil(±0.75mm) Hole diameter tolerance(PTH) ±3 mil(±0.075mm) Hole diameter tolerance(NPTH) ±1mil(±0.025mm) Max Aspect Ratio for PTH 8:01 Hole wall copper thickness 15-50um Alignment of outer layers 4mil/4mil Min trace width/space for outer layer 4mil/4mil Tolerance of Etching +/-10% Thickness of solder mask on trace Thickness of solder mask at trace corner ≥0.2mil(5um) Hardness of solder mask On base material ≤+1.2mil 6H Finished thickness Alignment of solder mask film ±2mil(+/-50um) Min width of solder mask bridge 4mil(100um) Max hole with solder plug 0.5mm Surface treatment HAL (Lead or Lead free), immersion Gold, Immersion Nickel, Electric Gold finger, plated Gold, OSP, Immersion Silver.carbon oil,etc. Max Nickel thickness for Gold finger 280u"(7um) Max gold thickness for Gold finger 30u"(0.75um) Nickel thickness in Immersion Gold 120u"/240u"(3um/6um) Gold thickness in Immersion Gold 2u"/6u"(0.05um/0.15um) Impedance control and its tolerance 50±10%,75±10%,100±10% 110±10% Trace Anti-stripped strength ≥61B/in(≥107g/mm) bow and twist 0.75% SPEEDA Technology is an electronic technology company formed by a team with an average of 10+ years of electronic industry experience. As one of the best pcb manufacturers in china, the company is mainly engaged in the design, R&D (research and development), manufacturing, and sales of various printed circuit boards. We provide pth board ,pcb board with holes and etc for sale.Our products are widely used in communication equipment, computer and network equipment, consumer electronics, automotive electronics, industrial control, new energy, rail transit, and other industries. We provide customers with a "one-stop" service, that is, an integrated service system consisting of printed circuit board design optimization, small-batch sample production, batch production, and after-sale services. Adhere to quality first, service first, to improve customer satisfaction as the goal continuously. SPEEDA, Your Best Business Partner.

Kunming Foreign Language School offers Chinese immersion course. KCEL provides 24hrs Chinese language immersion program, which is designed for people who have business or study purpose that needs to grasp Chinese in a very short time. There will be different teachers accompany you and talk Chinese with you all day. It is a very good opportunity to experience Chinese traditional culture, to total immerse in Chinese language environment, to familiar with the place you are going to live and study in, and to build a good relationship with local people. This immersion program contains 4hrs/day Chinese courses (comprehension, speaking, writing), 2 hrs/day Chinese culture courses (cook, paint, play music instrument, kung fu, calligraphy), tours around Yunnan in weekend, various culture-related activities during night (food, concert, film, drama, etc.). VIP Chinese Immersion Program (1 people, 1 week) (Or you can choose individual service) ① 4 hours one-on-one Chinese lessons a day, Monday to Friday. (The starting time and finishing time are totally customized ) ② 2 hours Chinese culture class a day, Monday to Friday. ③ 3 meals a day: Monday to Friday, ④ Accommodation: Hotel or apartment. - single room, double room (includes laundry, internet access) ⑤ Tours Around Kunming during weekend: The following services are also included for free: ⑥ Airport pick-up and drop-off ⑦ A tour of the surrounding (bank, supermarket, post office, etc.) ⑧ Travel Planning in China ⑨ SIM Card for cell phones ⑩ Medicine for minor illnesses

Whether your interests are Chinese, food or culture, whether you are looking to travel, live or learn in China, Travel in China helps you learn Chinese better. Since the Tang Dynasty, there were foreign students in China, and the number of foreign students has been increasing every year since the reform and opening-up policy, and exchanges between China and foreign countries have become more frequent, with the development of economy and the development of Comprehensive National Power, the tourism industry of our country has developed rapidly and become the sunrise industry of our country in the 21st century, while developing our country's long history and culture, it has greatly promoted the exchange between China and foreign countries and further stimulated the demand for second language learning. Because China's multi-element culture is one of the important factors to attract foreign students, the ancient customs and the long history and culture are the best ways to teach Chinese, therefore, it combines the foreign student's tourism with Chinese and designs a special second class which is helpful to the teaching of Chinese. The "Tourism Chinese course" appeared. For Foreign students who come to China to learn Chinese, tourism is an indispensable part of their life, combining the tourism culture with the study of Chinese, which greatly arouses their interest and contributes to the study of Chinese as a second language, it also Promoted Chinese culture and cross-ethnic exchanges. When you want to travel to China, but you don't know about transportation, checking in or asking the way, what should you do? By learning to travel Chinese, KCEL can help you solve these problems. The travel Chinese course contains many aspects of travel and life, such as booking tickets, shopping, money change, asking for help and so on. We have a dedicated teacher to conduct this course for you. You can choose the best class type: One-to-One so that the teacher can customize the teaching content for you. Of course, you can also choose a small class. Either way, we hope you can have a great time in Yunnan, a province with a wealth of tourism resources. First of all, we will test your Chinese proficiency. Second, we will determine the level of your Chinese language according to the test. This determines what kind of teacher you will be assigned to in your class. Third, if you choose a one-on-one class, we will ask the teacher to customize the learning content and learning plan for travel Chinese based on your personal circumstances and learning needs. In a word, we will help to improve basic chinese for travelers.