China Tungsten Tubing Manufacturers Suppliers Factory

Company Profile

Shanghai CAREWE Medical is a leading medical-grade extruded tubing manufacturer, providing a wide range of tubing solutions to the medical industry. Our products include PTFE (Teflon) tubing, PTFE etching tubing, FEP heat shrink tubing, PET heat shrink tubing, PTFE heat shrink tubing, PVDF tubing, FEP tubing, PEEK tubing, PEBAX, Nylon, TPU, and many other tubes. Our team has over 10 years of experience in manufacturing tubing for catheter assemblies and we have now launched new products such as metal rings made of Pt Ir and tantalum rings, as well as enhancing our capabilities in secondary processing, such as PTFE etching tubes, multi-lumen tubes, printing on PTFE tubing and tip forming.

Why Choose Us

Rich experience

Our team has over 10 years of experience in manufacturing tubing for catheter assemblies and as well as enhancing our capabilities in secondary processing.

Good service

Our have provide exceptional service to our customers by offering high-quality products, outstanding customer support, and innovative technologies.

Advanced equipment

Our facilities include a large production area with a specialized cleanroom for extrusion and secondary processes.

Quality control

We operate state-of-the-art extrusion lines with the latest technology and strict quality control procedures to ensure that every product that leaves our facilities meets the highest standards of quality.

Tungsten Carbide Tubing
Tungsten carbide tubing for medical applications can be found from specialized manufacturers and suppliers. It is important to ensure that the tubing meets applicable medical standards and regulations.
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Baso4 Loaded Tubing
Baso4 Radiopaque tubing is a kind of medical material that has become increasingly popular in recent years. It is a tubing that contains barium sulfate, which is a type of radiopaque substance that is easily visible on X-ray images.
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What Is Tungsten Tubing?

A tungsten tube, also called a tungsten pipe, is a type of cylinder-shaped tube made from the chemical element tungsten. Tungsten tubes are really strong and durable. Tungsten Tube is highly valued for its robustness and high melting point, making it suitable for environments with extreme temperatures. It is often used in furnaces, aerospace designs, and electronics for its durability and heat resistance.

Benefits of Tungsten Tubing

Resistance to high temperature
Among all pure metals, tungsten boasts the highest melting point at 3,244°c. This exceptional property allows it to be utilized in environments with extremely high temperatures where other metals would fail.

High density
Tungsten has a high density of 19 g/cm³, attributed to its microcrystalline structure. This characteristic makes it valuable in applications that need substantial mass within compact dimensions.

Low thermal expansion
Among all pure metals, tungsten has the lowest coefficient of thermal expansion. Unlike steel, tungsten remains highly stable at elevated temperatures and does not change in form or size.

Electronic structure
Due to its excellent conductivity and general inertness, tungsten is commonly employed in electrical devices that operate under high levels of radiation. It also serves as an ideal material for electrodes in the electrolysis of various substances.

Corrosion resistance
Tungsten's exceptional resistance to corrosion allows it to be used in diverse applications where corrosion is a concern. It performs well in outdoor environments exposed to water and acids. Typical uses of tungsten include fishing lures, ship construction, and certain types of jewelry.

Fabrication strengthening
Despite its strength, tungsten can be drawn into extremely thin wires without breaking. For example, the filaments in light bulbs are made from tungsten, allowing them to endure high temperatures while remaining functional.

Application of Tungsten Tubing

1.Thermocouple sheaths
2.Semiconductors
3.Medical devices
4.Nuclear and aerospace critical applications
5.Advanced electronics
6.Solar thermal management technologies
7.High-temperature furnace parts

Material of Tungsten Tubing

A hard, rare metal under standard conditions when uncombined, tungsten is found naturally on Earth only in chemical compounds. It was identified as a new element in 1781, and first isolated as a metal in 1783. Its important ores include wolframite and scheelite. The free element is remarkable for its robustness, especially the fact that it has the highest melting point of all the elements. Its high density is 19.3 times that of water, comparable to that of uranium and gold, and much higher (about 1.7 times) than that of lead. Polycrystalline tungsten is an intrinsically brittle and hard material, making it difficult to work. However, pure single-crystalline tungsten is more ductile, and can be cut with a hard-steel hacksaw.

Process of Tungsten Tubing

Sintering

Sintering is a key method in the manufacturing of tungsten tubes. It involves compacting tungsten powder into a green compact, followed by a high-temperature treatment (typically in a vacuum or hydrogen atmosphere) just below the melting point of tungsten. This process allows the tungsten particles to bond, resulting in a solid, dense structure.

In tube production, sintering is employed after pressing or forming processes. The compacted tungsten powder is shaped into the initial tube form, and sintering imparts strength and cohesion to the structure.

Machining

Machining involves the removal of material through various processes such as cutting, drilling, and turning to achieve specific dimensions, shapes, and surface finishes. Precision machining is crucial to meet tight tolerances and quality requirements.

After sintering, tungsten tubes often undergo precision machining to achieve final dimensions and features. This may include cutting the tube to the desired length, drilling holes, and ensuring the tube meets the required specifications.

Welding

Welding is a joining process that involves the fusion of two or more pieces of material to create a unified structure. Tungsten inert gas (TIG) welding is commonly used for tungsten materials due to its high melting point. Welding may be used to join tungsten tubes or to attach additional components to the tubes.

Powder metallurgy and forming

The primary methods for tungsten tube manufacturing involve powder metallurgy, pressing, and forming processes, with sintering as a crucial step within these methods. These processes help shape tungsten into the desired tube structure.

How to Clean Your Tungsten Products

Wash with soap and water
Tungsten is water-resistant, and when your tungsten products has become dirty, you can simply soak it in a solution of warm water and a few drops of household detergent or mild liquid soap. Let the products soak for around 15 minutes.

Scrub lightly
If your products still appears dirty after soaking, use a soft cloth or a toothbrush to scrub off any of the remaining buildup of grime or dirt. If your products has grooves, or engravings, make sure to scrub them more thoroughly.

Remove greasy stains
If your products feels greasy, which is typically due to residue left by lotion or oils, use a cotton swab and rubbing alcohol to remove the grease stains. Then, wash the products as described above.

Rinse with clean water
Rinse your products with clean water and wipe it off with a clean, dry cloth.

Store your tungsten products properly
Store your tungsten products properly by keeping it in a fabric lined container or pouch.

Do not use harsh chemicals
It is not advisable to use harsh chemicals to clean your tungsten products. These chemicals, which include bleach, ammonia, and other commercial cleaners, can damage your tungsten productsand cause permanent stains and spotting. They may also weaken the structure of the metal.

How Tungsten Tubes Enhance Performance in Medical Devices

In the medical field, precision and reliability are not just desired—they’re essential. Tungsten tubes are employed in various medical devices due to their strength and biocompatibility. In radiation therapy equipment, tungsten’s high density makes it an excellent choice for shielding against radiation, protecting both the patient and the medical staff. Furthermore, tungsten tubes are utilized in the production of fine medical needles and catheter components, where their rigidity and precision are crucial. The ability to maintain sterility and withstand repeated sterilization processes without degrading is another reason tungsten tubes are favored in healthcare.

Tungsten Tube Properties (Theoretical)

Molecular Weight	183.85
Appearance	Silvery
Melting Point	3410 °C
Boiling Point	5900 °C
Density	19.3 g/cm³
Solubility in H2O	N/A
Electrical Resistivity	5.65 μΩ ·m (27 °C)
Electronegativity	1.7 Paulings
Heat of Fusion	35.3 kJ/mol
Heat of Vaporization	806.7 kJ/mol
Poisson's Ratio	0.28
Specific Heat	0.133 J/g mol (20 °C)
Tensile Strength	750 MPa
Thermal Conductivity	1.73 W/m K
Thermal Expansion	(25 °C) 4.5 µm·m^-1·K^-1
Vickers Hardness	3430 MPa
Young's Modulus	411 GPa

Difference Between Tungsten and Titanium

Which material is the strongest depends on where it is going to be used. There may be an application where a high yield strength is vital but the compressive strength is a non-factor. Understanding the application is essential to selecting the proper materials. In terms of tensile strength, tungsten is the strongest out of any natural metal (142,000 psi). But in terms of impact strength, tungsten is weak - it's a brittle metal that's known to shatter on impact. Titanium, on the other hand, has a tensile strength of 63,000 psi But when you figure in titaniums density and make a pound-for -pound comparison, it beats tungsten. Looking at titanium in terms of
compression strength. it scores much lower on the Mohs scale of hardness.

Discovery of Tungsten

In 1779 Irish chemist Peter Woulfe deduced the existence of a new element – tungsten – from his analysis of the mineral wolframite (an iron manganese tungstate mineral).

Tungsten was isolated as tungstic oxide (WO3) in 1781, in Sweden, by Carl W. Scheele from the mineral scheelite (calcium tungstate). However he did not have a suitable furnace to reduce the oxide to the metal.

Tungsten was finally isolated by brothers Fausto and Juan Jose de Elhuyar in 1783, in Spain, by reduction of acidified wolframite with charcoal.

The element name comes from the Swedish words ‘tung sten’ meaning heavy stone.

The chemical symbol, W, comes from the original name of the element, Wolfram.

Tungsten is one of the five major refractory metals (metals with very high resistance to heat and wear).

Our Factory

Shanghai CAREWE Medical is a trusted partner in the medical industry, offering high-quality tubing solutions with unparalleled customer support. Whether you need custom extruded tubing solutions, secondary processing, or standard tubing products, we are committed to meeting your needs and exceeding your expectations. Let us help you achieve your medical breakthroughs today.

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Certifications

FAQ

Q: What is tungsten tubing used for?

A: Anti Tangle Tungsten Rig Tubing
Perfect for concealing fishing lines from wary carp. Tungsten Tubing is the fish friendly, safer alternative to Lead Core. In the unfortunate event of a crack off Tungsten Tubing easily pulls from the mainline. Tungsten Tubing also helps minimise damage to fish scales.

Q: What is tungsten mainly used for?

A: Current uses are as electrodes, heating elements and field emitters, and as filaments in light bulbs and cathode ray tubes. Tungsten is commonly used in heavy metal alloys such as high speed steel, from which cutting tools are manufactured. It is also used in the so-called 'superalloys' to form wear-resistant coatings.

Q: What is tungsten pipe?

A: Reference: HTWW1494. Tungsten Tube is highly valued for its robustness and high melting point, making it suitable for environments with extreme temperatures. It is often used in furnaces, aerospace designs, and electronics for its durability and heat resistance.

Q: Is tungsten stronger than steel?

A: Tungsten is well-known for its strength and durability, making it a popular choice for many applications. It is one of the strongest metals on the planet, with a tensile strength that is nearly double that of steel.

Q: Is tungsten fire proof?

A: Having a melting point of 3422 °C, tungsten can easily withstand even the most intense heat. Combined with its extremely low thermal expansion, it resists distortion and warping at elevated temperatures. In fact, it has a coefficient of thermal expansion close to those of alumina and borosilicate glasses.

Q: Will tungsten rust?

A: A high-quality, jewelry-grade tungsten ring will not oxidize — meaning it will not rust or tarnish. However, it is sometimes the case that tungsten metals are combined with another metal to create an alloy, and a lower quality, industrial tungsten alloy may contain cobalt, which can show oxidation and corrosion.

Q: Can tungsten be welded?

A: Welding tungsten carbide may or may not be true welding. This is achieved by using tungsten carbide parts such as saw tips that have a special surface enhancement. A tungsten carbide saw tip with a large amount of surface cobalt can be induction “welded” reliably and easily.

Q: Why is tungsten so valuable?

A: Tungsten is one of the most remarkable metals. It has the highest melting point of any element yet to be discovered – as well as an extremely high-density and resistance to both corrosion and thermal deformations. It can also be easily combined with other metals to form alloys and carbides.

Q: What element can destroy tungsten?

A: As an element, tungsten can be neither created nor destroyed chemically, although tungsten can change forms in the environment.

Q: What is another name for tungsten?

A: The names tungsten and wolfram have been used for the metal since its discovery, though everywhere Jön Jacob Berzelius's symbol W prevails. In British and American usage, tungsten is preferred; in Germany and a number of other European countries, wolfram is accepted.

Q: What does tungsten react badly with?

A: Chemically, tungsten is mostly non-reactive; it does not react to acids, bases, air, oxygen, or water. However, if heated, it can react to oxygen to form an acidic compound. Additionally, at high temperatures, tungsten can react with bromine or chlorine, and iodine.

Q: What is the problem with tungsten?

A: One of the first signs of tungsten electrode problems is the appearance of the electrode tip. A clean and sharp electrode tip is ideal for producing a stable and focused arc. However, if the electrode tip is contaminated, melted, or blunt, it can cause arc instability, wandering, or spatter.

Q: Can you break tungsten with a hammer?

A: It's important to note though that even tungsten isn't completely indestructible. It is very hard and brittle, so if it's slammed against a very hard surface or smashed with a hammer (PSA: don't do this), it's possible for a tungsten ring to shatter.

Q: What is tungsten used for in everyday life?

Q: Is tungsten magnetic?

A: Tungsten is considered a paramagnetic material, meaning it is weakly attracted to magnetic fields. However, the magnetic properties of tungsten are relatively minimal compared to ferromagnetic metals like iron and nickel. This means that a permanent magnet will not strongly "stick" to tungsten.

Q: Is there a difference between tungsten and tungsten carbide?

A: The biggest and most important difference between them is that tungsten refers to the individual metal, whereas tungsten carbide is an alloy of tungsten and predominantly carbon, although nickel and titanium are among the other metals that might be used.

Q: How many types of tungsten rods are there?

A: Choosing one of the six commonly available tungsten electrodes is a crucial first step in successful gas tungsten arc welding (GTAW). In addition, tip preparation is critical. The electrode choices are pure tungsten, 2 percent thoriated, 2 percent ceriated, 1.5 percent lanthanated, zirconiated, and rare earth.

Q: What is the difference between thoriated and ceriated tungsten?

A: Most orbital welding applications use ceriated tungsten as it is easier to shape and polish as well as its superior arc-starting capabilities in a controlled environment (within a weld head). Ceriated tungsten also has limited exposure to radiation unlike in thoriated.

Q: What is the best all around tungsten for TIG welding?

A: 2% lanthanated tungsten (color-coded blue) is at the top of the list. This is a true all-purpose electrode, with excellent arc starting characteristics and the ability to transmit high current without spitting. It provides a stable arc at both high and low current, and works very well on all metals.

Q: What is the difference between blue and grey tungsten?

A: Meanwhile, blue tungsten works great on high-amp DC steel welding. DC welding steel at low current will require ceriated tungsten electrodes. Gray tungsten produces a more stable arc with thin steel, which is considered an alternative to red or gold tungsten.

We're professional tungsten tubing manufacturers and suppliers in China, specialized in providing high quality custom service. We warmly welcome you to wholesale high-grade tungsten tubing from our factory.

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