Positron emission tomography (PET) is one of the nuclear medicine techniques available for diagnosis. Whilst X-rays provide information on the structure of the body, tungsten PET shields show the chemical function of a particular organism. Tungsten PET shields involve the injection of FDG (a glucose-based radio nuclide) from a shielded syringe into the patient. As the FDG travels through the patient's body it emits gamma radiation, which is detected by a gamma camera, from which the chemical activity within cells and organs can be seen. Any abnormal chemical activity may be a sign that tumors are present. PET scans are frequently used to detect cancerous tumors and diseases of the brain and coronary arteries.

The solid tungsten PET shields dispensing system permits the safe dispensing of high- energy PET radiopharmaceuticals without the need for expensive remote handling systems .The magnetic "docking" feature of the solid tungsten syringe shield into the dispensing pig allows low exposure dose drawing .It is designed with 3.5 cm thick walls and accommodates up to a 30ml vial.

Tungsten PET shields dispensing pig provides a full 3.5 cm of solid tungsten to safely shield high energy PET radiopharmaceuticals. Designed to accommodate 30ml vials (adapters are available for smaller vials).The threaded lid attaches to the body of the pig so that no radiation "shine through" occurs .The tungsten stopper, with attached pull ring ,is held in place magnetically. The handle permits the pig to be easily carried as a transport container as well as a dispensing pig. Weight 43 lbs.

Tungsten PET shields magnetically docks with the PET Dispensing Pig .Designed to accept 3cc and 5cc B-D syringes ,it places the needle inside the vial septum when engaged .The body of the shield is constructed of solid tungsten 2.1cm thick for maximum shielding .The external calibration rod allows the precise volume to be withdrawn without a leaded glass viewing port ,where high exposure levels cannot be adequately shielded .The system allows the plunger to be pulled back with a pair of forceps ,allowing you to keep your exposure ALARA .Weight 5.8 lbs


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Tungsten is a very dense metal, also very durable. Use tungsten to make a dart barrel results in a smaller dart for the same weight. For anyone who plays darts often, the durability is important, as that helps retain the dart's precision-machined shape, grooves, and knurling.

Size is usually the first factor considered when choosing tungsten alloy dart billet. At about half the diameter of a similar weight brass dart, it is a lot easier to fit two or more tungsten darts into a double or triple area.

Think about the end of cricket games, where you need to hit several bulls to finish. An old-fashioned fat brass dart, the area is nearly covered by the first dart. Switching to a slim tungsten alloy dart billet easily allows two or three darts to fit in the same area. (Of course, you still have to be able to hit that bull!)

The advantage of tungsten dart barrel is you can achieve the same weight as a thick brass barrel, but the tungsten alloy dart billet would be a lot slimmer. This would be a lot more beneficial to a competent dart player as this leaves a lot more room in the treble bed when tungsten alloy dart billets are grouped closely together, making scoring easier. Tungsten alloy dart billet has a definitive advantage over traditional brass. In addition to less deflection, they are being produced with great knurling patterns on the barrels. These provide a confident grip with less potential for slipping. Tungsten alloy dart billet comes in a variety of both steel tip and soft tip sets.

Tungsten alloy dart billet comes in a variety of weights from about 16 grams up to around 30 grams. It is important when choosing a set of tungsten dart billet that you get the opportunity to try out as many as possible before deciding on a set. The main thing is you feel comfortable when throwing them. Once you find those perfect darts, it may be an idea to purchase an additional identical set just in case they get lost or stolen. If your game does go a little stale or you are striving for improvement, do not be afraid to change your darts. Tungsten dart billet offered by us are highest quality products and will serve you well for a long time.


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First of all, when it comes to choosing what weight and style of tungsten darts there isn't a wrong answer. The only thing to keep in mind is to not to spend a lot of money on your first set of tungsten darts. Ultimately, tungsten darts all comes down to what makes you feel most comfortable when you're at the line. Here are a few guidelines to review: Overview of dart types. There are many different darts to choose from: wooden dart, brass dart, nickel/silver dart and tungsten dart. Tungsten alloy is the best material to make into tungsten dart.

The most popular dart for dart league throwers is the tungsten dart because a high-density tungsten dart will resist wear and creates a smaller barrel that allows tighter groupings of tungsten darts. Brass and nickel/silver darts are cheaper and are made from softer metal darts meaning the knurling can wear down quickly from skin oils, friction and contact from other darts. When buying tungsten darts you should pay attention to the packaging because the percentage of tungsten is very important to the quality of the tungsten dart. The higher percentage of tungsten the tungsten dart is better and more expensive.   The main benefit of a high-quality tungsten dart is that the barrel will be smaller so you will be able to throw tighter groupings of tungsten darts, minimizing bounce outs. Try out the different Shafts. The main factors to consider when buying dart shafts, also known as tungsten dart stems, are length and weight. The important thing here is balance. You need to take care that your stems are not too long or too heavy relative to the length and weight of your dart barrels. The material the stems are made from is also worth considering. Plastic stems are the usual choice due to their relative cheapness and light weight. But it is worth trying aluminum shafts as these are lightweight but have the added advantage of extra rigidity; so they won't flex when you throw with them. One disadvantage is that they often work themselves loose. To overcome this simply adds a rubber O-ring to the threaded section of the shaft.

Try out the different Shafts.The main factors to consider when buying dart shafts, also known as dart stems, are length and weight. The important thing here is balance. You need to take care that your stems are not too long or too heavy relative to the length and weight of your dart barrels.The material the stems are made from is also worth considering. Plastic stems are the usual choice due to their relative cheapness and lightweight. However it is worth trying aluminium shafts as these are lightweight but have the added advantage of extra rigidity; so they won't flex when you throw with them. One disadvantage is that they often work themselves loose. To overcome this simply add a rubber O-ring to the threaded section of the shaft.

Try out the different dart barrel grips. Your next step is to try out different barrel grips that are available in the weight you have chosen. Some tungsten dart barrels have heavy knurling and others are smooth. Typically, the heavier the knurling the easier it is to grip the tungsten dart. However, extremely heavy knurling can cause tungsten darts to stick to your fingers and mess with your accuracy. For the typical dart player, there is more than one tungsten dart barrel that will work. Just make sure to choose the one feels the best and run with tungten dart.

Try out different flights. The main things to consider when looking for dart flights are shape and weight and rigidity. Flights come in many different shapes of tungsten dart and tungsten dart materials and, once again, the key is to pick the flights that balance your barrel and stems. If the flights are too heavy your tungsten darts will be unbalanced.


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Tungsten alloy rod have very high melting point and density which are twice than steel and more than 50% heavier than lead, which is important in the case of needing high weights while low volume. What’s more, tungsten alloy rod has high density and high tensile strength, separately ranging from16.5 to18.75 g/ cm and 700 to 1000Mpa. In addition, tungsten alloy rod has good corrosion resistance, weld ability, mach inability and low thermal expansion. Besides, tungsten alloy rod is wearable, resulting in prolong the life of the tungsten alloy crankshaft rod which is so important to companies for saving of regular cost. Finally but not the lastly, tungsten alloy’s harmless to health and environment-friendly which is important in this decades also leading people to adopting tungsten alloy materials for their crankshaft counterweight. The above advantages have made tungsten alloy rod ideal materials for crankshaft.

The tungsten alloy crankshaft rod is a rotating mass, and any rotating mass that isn't perfectly balanced will cause uneven loading on the bearing surfaces that support it. The faster it turns, the worse the problem becomes. So we should not overlook the importance of balancing the engine, as tungsten alloy crankshaft rod enables us to sustain higher engine speeds and gives us reliability.

The tungsten alloy crankshaft rod bearings fit into the lower end of the connecting rod. Tungsten alloy crankshaft rod are fed a constant supply of oil through a hole in the crankshaft Journal. A hole in the upper bearing half feeds a passage in the connecting tungsten alloy crankshaft rod to provide oil to the piston pin.

Reducing engine vibration reduces stress on motor mounts and external accessories, and in big over-the-road trucks, the noise and vibration the driver has to endure mile after mile. A smoother-running engine is a powerful engine as less energy is wasted by the tungsten alloy crankshaft rod as tungsten alloy crankshaft thrashes about in its bearings, which translates into a more usable power at the flywheel.



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As we know, the tungsten heavy alloy barrel forms the main part of a tungsten heavy alloy dart. Tungsten heavy alloy billet is now standard barrel material, for tungsten heavy alloy barrel has a specific gravity of 19.3(20℃), making it a very dense material. Smaller volume allows for better grouping. Moreover, tungsten heavy alloy barrel has superior wearing resistance, well machinability, etc.

Because it’s special properties, tungsten heavy alloy barrel for tungsten heavy alloy darts is quite difficult to be manufactured as 100% tungsten. Therefore, in fact, the “All- tungsten” darts in market are made of tungsten heavy alloy billet. Engineered for a greater weight to volume ratio, tungsten heavy alloy darts have a characteristically slimmer tungsten heavy alloy barrel. Due to these special properties of tungsten heavy alloy barrel, tungsten heavy alloy billet is now standard material applied in the making of tungsten heavy alloy darts to replace brass.

Today's standard material for tungsten heavy alloy barrel is tungsten heavy alloy, and tungsten heavy alloy barrels forms the main part of a dart (mainly used in sports). Tungsten heavy alloy barrel has a specific gravity of 19.3(20 ℃), so tungsten heavy alloy billet is a very dense material. For its special properties, nowadays tungsten heavy alloy billet is widely applied to make tungsten heavy alloy darts replacing brass. Because of technical difficulties with manufacturing, a 100% tungsten heavy alloy dart is not available. All "tungsten "heavy alloy darts you can buy are in fact made of tungsten heavy alloys.


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Due to high density and small volume, high melting point, excellent hardness, superior wearing resistance, high ultimate tensile strength, high ductility, well machinability, non-toxic and environmental friendliness, high impact resistance and crack resistance, tungsten heavy alloy sports are more and more popular.

Tungsten heavy alloy sports family now also consists of fishing. Tungsten alloy fishing weights and jigs can be used in both the fresh water and salty water As a general rule, often adopt the lightest jig weight if possible, because the lightest fishing jig permits you to feel the bottom and any cover it contacts. In clear water, lighter weights ranging from1/8 ounce to 1/4 ounce should be combined with light line for more effective and spinning tackle are also necessary. For murky or deep water, more dense cover and heavier jigs about 3/8 to 5/8 ounce are needed, and can be fished on stout bait casting tackle with heavy line. In the case of the windy day, it's hard to maintain contact with tungsten alloy fishing weight to detect strikes, while it will be not the problem if blow a bow in your line and go to have a heavier fishing sinkers.



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The steel tip tungsten heavy darts have been around for a very long time now and come in a few different types. The oldest style of steel tip tungsten heavy dart produced these days is the wooden widdy dart that has a inch wooden barrel and steel tips built into the barrel. It would surely be a minor miracle to score a 180 with steel tip tungsten heavy alloy darts.

The other more common dart is the standard steel tip tungsten heavy alloy dart with the tip built into the metal barrel. The barrel can be made of brass or tungsten. The main difference between the two metals is that tungsten is twice the density of brass so that a steel tip tungsten heavy alloy dart can be made the diameter of a brass dart for the same weight. This means that you can more easily fit three darts into the treble 20 with steel tip tungsten heavy alloy dart than brass darts.

The steel tip tungsten heavy alloy darts weight comes in all varieties, especially when it comes to the grip. The grip can be smooth with just the grooves in the barrel to give the grip, or knurled with a more aggressive diamond pattern marked into the barrel for extra grip and the new edge grip.

Tungsten is a brittle and dense material. Because of its brittleness another alloy is added to it to avoid breakage, the most common is nickel. The higher the percentage of tungsten, the density increases in the barrel. Thereby you can have a smaller barrel (than brass or nickel-silver) even with the same or greater weight. The higher the percentage of tungsten, the cost of the dart usually goes up.  This is because Tungsten is a harder material to machine.  The hardness of a steel tip tungsten heavy alloy dart weight allows it to retain its grooves and knurl longer than a Nickel Silver or Brass dart. Tungsten weight is a preferred choice for more serious darters because you can group your steel tip tungsten heavy alloy darts tighter with a smaller barrel.



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Tungsten is a naturally occurring metal. Tungsten can be used in pure form or mixed with other metals to make alloys. Military tungsten alloy tend to be strong, flexible, and resistant to wear. Tungsten and its alloys are used in a variety of commercial products including light bulb filaments, x-ray tubes, welding electrodes, grinding wheels, ceramic pigments, and fire retardants.

Numerous countries have used tungsten and various tungsten alloy munitions for a number of years because of its high density and resulting penetrating power for armor piercing rounds. Are there tungsten alloys in the Army's "green bullet"? The "green bullet" is a common term for the lead-free, small arms ammunition developed by the Army in an effort to provide soldiers with ammunition that is environmentally friendly. Military Tungsten alloy are not used in the green bullet or lead-free bullet. Green bullet typically contains tungsten that is mixed together with either nylon or tin.

Military tungsten alloy, on the other hand, contains other metals, such as nickel, cobalt, iron, or copper, which are heated to high temperature that allows the materials to bond together. While the green bullet has been used in training operations at a limited number of Army installations, it has not been used on the battlefield.


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Tungsten rings are very attractive and considered to be show stoppers because of their shine. Many are choosing them over other precious metal rings because of their economical cost and their ability to retain their luster. Tungsten rings are 10 times harder than gold, 4 times harder than titanium and the most scratch resistant of metals. They are considered one of the most popular rings in the world today because they provide style, toughness and comfort to last a long time.

When compared to some popular metals such as gold and silver, tungsten rings are able to retain their luster without having to perform regular polishing. They come in different shades and shapes to satisfy a variety of different styles. You can choose a sleek tungsten band or a diamond tungsten ring. The neat part is that you can make them more personal by engraving them.

Many tungsten rings come with a central band that is of different color. Some have interesting designs in different colors such as red and black. Others will include a precious stone or even diamonds. The engagement rings are more likely to have diamonds on them. With any style you decide, its important to receive a warranty. A lifetime warranty of the ring is usually good sign of the quality. The best ones should usually come with a lifetime warranty.

Tungsten rings have more simple styles that have flat and dome shapes in various different finishes. They are made in different sizes to accommodate both men and women. They can be easily personalized to make the ring one of a kind. When it comes to Celtic tungsten rings, they are symbolic because there are meanings behind the unique symbols on the ring. The symbols on the ring can represent different meanings such as love, family and religion. You also have tungsten rings with unique inlays which are ideal for who people that like to wear eye catching jewelry.


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The element tungsten derives its name from the Swedish words "tung" and "sten," which translates to "heavy stone." As its name implies, Tungsten is known for its qualities of strength and hardness. For instance, of all the metals on the periodic table, it has the highest melting point. When this dense, durable metal is combined with carbon alloy to make tungsten carbide, one has the material to make gorgeous and enduring jewelry.

The most important thing a wearer looks for in a ring is attractiveness. Tungsten ring is a show stopper due, in part, to its shine. Unlike other metals like gold, silver and platinum, tungsten rings retain their luster without regular polishing. While scuffs, dings and scratches will eventually prevent other jewelry from ever being as smooth and gleaming as when it is new, a tungsten ring's hardiness will allow it to continually look as though you've just purchased it from the jeweler. Tungsten ring also comes in various shades, from a more reflective glossy metal, to brushed smoky gray, to even a gleaming black. From basic flat, to be jeweled, shaped or etched with designs and shapes, tungsten ring satisfies a variety of fashion tastes. Additionally, they are engravable for that personal touch.

Another desirable aspect of rings is wearability and durability. While the look of a ring is important, how useful is a ring that cannot be worn regularly due to fragility or discomfort? On the practical side, tungsten ring is 10 times more durable than gold and nearly scratch resistant, making it long lasting enough to become both one of your family's heirloom jewelry pieces, as well as able to outlast even the most active (or accident prone!) of wearers. For instance, wedding rings are one of the most important pieces of jewelry a person can own. It provides sentiment and meaning to our daily lives. And yet, too often even simple chores like washing the dishes or digging in a garden require a person to take a wedding ring off to avoid damage. Sadly, this is also how many of these rings get lost. But tungsten wedding bands allow you to leave the ring on during even the roughest of activities.

Besides durable, a tungsten ring is also comfortable. Rings for men and women come in a variety of shapes and sizes, from the petite and light, to a bold extra-wide shape. Another benefit of some tungsten ring is its ability to be worn by some of those who typically have allergic reactions to other metallic jewelry. tungsten ring that is made with a nickel-binder alloy is hypoallergenic, and does not cause skin irritation.

When choosing a ring for yourself or another, remember that jewelry which must be kept in a box for safety is not performing its most essential function of giving joy to the wearer. By purchasing a tungsten ring, you are ensured both attractiveness and wearability for years and years to come.


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