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| Customization: | Available |
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| Type: | Stainless Steel Pipes |
| Standard: | ASTM, AISI, GB, JIS, DIN, EN |
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304/316 Stainless Steel Seamless Thick-Wall Capillary Tube - Product Details
High-precision 304/316 stainless steel seamless thick-wall capillary tubes, manufactured through cold-drawn or cold-rolled processes, offer excellent corrosion resistance, high pressure tolerance, and seamless integrity. Widely used in medical devices, petrochemicals, automotive, aerospace, and precision instruments.
| Premium Material | 304/316 stainless steel, resistant to acids, alkalis, and salts. |
| Seamless Design | No welded joints, ideal for high-pressure applications. |
| Thick-Wall Option | Wall thickness 0.1-5mm, enhanced durability. |
| Tight Tolerance | Outer diameter ±0.02mm, high precision. |
Surface Finishes |
Bright annealed, pickling, or polished. |
| Material | 304 / 316 Stainless Steel (Optional) |
| Standard | ASTM A269 / ASTM A213 / GB/T 14976 |
| Outer Diameter (OD) | 0.5mm-20mm (Customizable) |
| Wall Thickness | 0.1mm-5mm (Heavy-wall ≥1mm) |
| Length | 1m-6m (Straight) or Coiled (Custom) |
| Tolerance | ±0.02mm (High Precision) |
| Surface Finish | Bright Annealed / Pickling / Polished |
| Temperature Range | -200°C to +800°C |
| Tensile Strength | 304: ≥515 MPa / 316: ≥620 MPa |
| Packaging | Shockproof Foam + Wooden Case (Customizable) |
| MOQ | 100kg (Negotiable) |
Chemical Composition
| Cr (Chromium) | 18-20 | 16-18 | Corrosion Resistance |
| Ni (Nickel) | 8-10.5 | 10-14 | Oxidation Resistance |
| Mo (Molybdenum) | ≤0.75 | 2-3 | Enhanced Corrosion Resistance |
| C (Carbon) | ≤0.08 | ≤0.08 | Hardness Control |
Medical: Surgical tools, catheters, syringe needles.
Petrochemical: Heat exchangers, reactor pipes, chemical instruments.
Automotive: Fuel lines, sensors, hydraulic systems.
Aerospace: Fuel transfer, hydraulic tubing, precision components.
Electronics: Semiconductor equipment, vacuum chambers.Key Benefits
Corrosion Resistance: 316 with Mo resists seawater/acidic environments.
High Strength: Seamless cold-drawn for superior pressure tolerance.
Precision Sizing: Tight tolerances (±0.02mm).
Customizable: OD, wall thickness, length, and surface finishes.
Fast Delivery: 7-15 days for standard specs.
Q: 304 vs. 316 stainless steel?
A: 304:Cost-effective, general corrosion resistance.
316: Mo-added, ideal for harsh/chemical environments.
Our company Principle is " Quality first, Customer first".
CHANGZHOU DLX ALLOY CO, LTD was established in 2002 and has got Iso9001 International Quality Management System Certificate and SGS Certificate. Our factory is professional in researching and producing special alloy material. From melting, drawing, heat treatment, finishing and testing .We offer nickel-based, copper-based, and iron-based alloys, including super alloy, welding materials, anti-corrosion alloy, precision alloy, FeCrAl alloy, NiCr alloy, CuNi alloy, thermocouple and etc, in the form of wire, strip, ribbon, bar, tube, plate.
1. We're able to design and develop the product what our customers require and meet their requirements through providing the appropriate engineering drawings or samples.
2. We can provide the products within a week after payment.
3. Wecan provide sample of the products customer need.
4. We always insist on "Quality first, Customer first" as our business philosophy.
Question: Are you a trading company or manufacturer?
Answer: We're manufacturer.
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