For certain systems, corrosion turns into a real headache. Shaanxi Chuanghui Daye Metal Material Co., Ltd. builds a seamless tantalum tube for those setups. Chemical and medical equipment builders can order a tantalum tube with no weld seam straight from the company. The metal here is tantalum. Purity passes 99.9%. Density comes in at 16.65 g/cm³. Outer diameter runs from 5 mm to 200 mm. Wall thickness spans 0.5 mm up to 20 mm. Maximum length is 3000 mm. Along the whole tube, no weld seam exists at all. Process fluid therefore never touches a weld zone. The company sits in Baoji, Shaanxi. Supplies have already reached buyers in the United States, Germany, South Korea, and Singapore.
Tantalum belongs to the refractory metals group. A tube drawn from it carries no longitudinal weld seam. Around the full circumference, the wall stays unbroken. No weld bead appears on the body. A heat-affected zone (HAZ) is missing as well. On welded tubing, corrosion tends to begin right at the weld. So many acid service jobs call for a wall with no weld in it.
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Content, Max, Weight % |
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Element |
R05200 Uanlloyed Tantalum |
R05255 90% Tantalum 10% Tungsten |
R05252 97.5% Tantalum 2.5% Tungsten |
R05240 60% Tantalum 40% Niobium |
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C |
0.010 |
0.010 |
0.010 |
0.010 |
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O |
0.015 |
0.015 |
0.015 |
0.020 |
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N |
0.010 |
0.010 |
0.010 |
0.010 |
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H |
0.0015 |
0.0015 |
0.0015 |
0.0015 |
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Fe |
0.010 |
0.010 |
0.010 |
0.010 |
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Mo |
0.020 |
0.020 |
0.020 |
0.020 |
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Nb |
0.100 |
0.100 |
0.50 |
35.0~42.0 |
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Ni |
0.010 |
0.010 |
0.010 |
0.010 |
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Si |
0.005 |
0.005 |
0.005 |
0.005 |
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Ti |
0.010 |
0.010 |
0.010 |
0.010 |
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W |
0.05 |
9.1~11.0 |
2.0~3.5 |
0.050 |
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Ta |
Remainder |
Remainder |
Remainder |
Remainder |
Sizes inside the ranges above can be requested. Grade is not stated here. The page gives no tolerances or mechanical properties either. MOQ is missing as well, along with lead time and test documents. State your requirements in the inquiry. The team can then confirm what can be supplied.
A high-purity ingot is where most tantalum tube starts. Extrusion can come next. Another route is tube rolling. Cold pilgering and cold drawing work as well. Before you buy, settle the route for your order with the team.
The list holds two surface conditions. Bright annealed is one of them. Pickled is the other. Electropolishing can be ordered as well. Is metal ion contamination a problem in your process? If so, put your surface and cleanliness requirements on the inquiry too.
Electronic devices
Medical implants
Steel industry
Chemical Processing
Aerospace and Defense
Energy and Environmental Engineering
Two areas get listed here: chemical equipment and medical equipment. In a chemical plant, one place a tantalum tube shows up is the heat exchanger. Acid-handling lines are the other. Corrosion resistance matters in both cases. Over on the medical and pharmaceutical side, buyers look hardest at purity and surface finish.
Other cases follow that same route. Tell the team what your operating conditions look like. Back comes an answer on whether a seamless tantalum tube fits.
Review these points before you order:
Tantalum tube from Shaanxi Chuanghui Daye comes in outer diameters of 5 mm up to 200 mm. Wall thickness runs 0.5 mm to 20 mm. On length, the tubes go as far as 3000 mm. The tube carries no welded seam. Send a drawing or a size list. Your project needs can then be checked against it by the team.
Titanium products come from the same team. So do niobium, tungsten, molybdenum, zirconium, and nickel goods. Rare metal orders can be put together.
Baoji High-tech Development Zone is where the company is based. People often call that area China's "Titanium Capital." The founder has spent over 30 years in the rare metal industry. Products have shipped to more than 50 countries. Metallurgy and electronics use seamless tantalum tube in the product range. So do medical and special steel fields.


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Grade |
Tensile Strength min, lb/in2 (MPa) |
Yield Strength min, lb/in2 (MPa) |
Elongation, min%, 1 inch gauge length |
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R05200/R05400 |
30000(207) |
20000(138) |
25 |
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R05252 |
40000(276) |
28000(193) |
20 |
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R05255 |
70000(481) |
60000(414) |
15 |
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R05240 |
40000(276) |
28000(193) |
20 |
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Q: For a tantalum tube, should I go weld-free or welded?
A: Pick weld-free tube when you worry about weld seams in corrosive service. Pressure cycling in the tube is another reason to go that way. Welded tube can work for larger-diameter piping with lower demands, where cost leads. Your design requirements should drive the final choice.
Q: Can the tube be used in air at high temperature?
A: In air at elevated temperature, tantalum oxidizes and absorbs gases. Before ordering, check the maximum service temperature with the team. Also confirm how the tube will be protected, for example with vacuum or inert gas.
Q: How can hydrogen embrittlement be reduced?
A: Tantalum should never be joined straight to a less noble metal unless you insulate the joint. Also keep the process fluid free of fluoride ions and strong alkaline solutions. Both of them eat away the protective oxide layer.
Q: What surface finish is available?
A: Our product data gives two options: bright annealed and pickled. Electropolishing is also available. When you send your inquiry, just tell us which finish you need.
Q: Can the tube be welded to other materials?
A: Welding by fusion to steels or nickel alloys may create brittle intermetallic compounds. Options include explosion bonding, tantalum-lined flanges, or mechanical fittings.
Q: What sizes of this product can I order?
A: Outer diameter ranges 5–200 mm. Wall thickness is 0.5–20 mm, and the length can go up to 3000 mm.
Email your tube size, quantity, and application to info@chdymetal.com. The team will reply with a seamless tantalum tube quotation.
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