We’re excited about our 304 seamless capillary tubes, built specifically for HPLC chromatography systems. These tubes are a solid choice for labs looking to nail precision and reliability without breaking the bank.

Our 304 stainless steel capillary tubes are all about durability and corrosion resistance. They stand up to most solvents and chemicals used in HPLC, making them a reliable pick for separating and analyzing compounds. The seamless design is a big win—no weak points or seams means they can handle the high pressures of modern HPLC systems without leaking or failing. That’s critical when you’re running sensitive tests where even a tiny glitch can throw off results.

Precision is where these tubes really shine. With outer diameters as small as 0.5 mm and super-thin walls, they ensure smooth, consistent fluid flow for accurate separations. Whether you’re analyzing pharmaceuticals, testing environmental samples, or checking food safety, these tubes deliver the tight tolerances needed for reproducible results. Their smooth inner surfaces also cut down on turbulence, so you get clean data every time.

Cost is another reason we love 304 stainless steel. Compared to pricier options like 316 stainless steel, 304 gives you great performance at a lower price point, which is a big deal for labs watching their budgets. They’re tough enough to last through repeated use and cleaning cycles, so you’re not constantly replacing them. Plus, they’re compatible with standard HPLC fittings, so integrating them into your system is a breeze.

We make sure these tubes are ready to go straight out of the box. They’re polished and passivated to remove any surface impurities that could mess with your analyses. Need a specific size or finish? No problem—we can customize diameters, wall thicknesses, and lengths to fit your setup. From pharmaceutical R&D to environmental monitoring, our tubes are versatile enough to meet the demands of various industries.

The HPLC market is booming, with global demand for chromatography systems expected to hit USD 6.2 billion by 2030, driven by stricter regulations in pharma and food safety. Our 304 seamless capillary tubes are perfectly positioned to support this growth, offering a balance of performance, affordability, and reliability. We’re committed to helping labs achieve precise results while keeping costs in check, and these tubes are a key part of that mission.

About Us:

Our 12,000㎡ factory is equipped with complete capabilities for research, production, testing, and packaging. We strictly adhere to ISO 9001 standards in our production processes, with an annual output of 1,200 tons. This ensures that we meet both quantity and quality demands. Furthermore, all products undergo rigorous simulated environment testing including high temperature, high pressure, and corrosion tests before being dispatched, ensuring they meet customer specifications. We also provide chemical analysis reports for every FeCrAl alloy, NiCr alloy, and other products purchased.

For all our clients, we offer timely and multilingual after-sales support and technical consulting, helping you resolve any issues swiftly and efficiently.

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FAQ：

Why use 304 stainless steel for HPLC systems?

Its corrosion resistance and durability make it ideal for handling aggressive solvents in chromatography.

Are 304 seamless capillary tubes suitable for high-pressure HPLC?

Yes, their seamless design ensures they can withstand high pressures without leaking.

Can we get custom sizes for these tubes?

Definitely, we offer customized diameters and wall thicknesses to match specific HPLC requirements.

How do they compare to 316 stainless steel tubes?

304 is more cost-effective but has slightly lower corrosion resistance in chloride-rich environments.

What’s the typical size range for these tubes?

Outer diameters range from 0.5 mm to 6 mm, with wall thicknesses from 0.1 mm to 0.8 mm.