Our products are engineered for surface-critical applications,

where inner-surface condition directly affects performance and repeatability. Rather than generic metal parts, we focus on controlled surface finishing, process consistency, and stable production for demanding flow paths and related components.

In high-purity and UHP systems, inner surface condition is not a cosmetic detail — it directly affects particle generation, flow stability, corrosion behavior, and long-term process reliability.

KAMEHA focuses on stainless steel tubing and capillary products where conventional mechanical polishing reaches its limits. By applying controlled chemical polishing processes, we achieve uniformly smooth, clean inner surfaces without directional machining marks, enabling stable performance even in fine inner diameters and extended lengths.

Our products are designed for applications where surface quality consistency, batch stability, and engineering-level communication matter more than generic specifications.

Engineering-Focused Metal Tubing Solutions

KAMEHA is a Japan-based supplier specializing in high-purity stainless steel tubing and capillary products for surface-critical applications.

Our core products include chemically polished long tubing and ultra-smooth capillary tubes used in semiconductor manufacturing equipment, high-purity fluid control systems, and other contamination-sensitive environments.

We work closely with long-term manufacturing partners to ensure stable processes, consistent surface quality, and reliable supply. Beyond specifications, we support customers with practical engineering communication to help solve real application challenges.

Core Products:

Semiconductor Long Tubing · High-Purity Capillary Tubes · Chromatography Empty Columns

Representative internal surface inspection snapshots supporting our tubing and capillary products.

High-Purity Stainless Steel Capillaries for Precision Fluid Handling

We supply high-purity stainless steel capillaries engineered for applications where inner-wall condition affects repeatability. Using controlled chemical finishing, we achieve a smooth, uniform bore that helps reduce adsorption effects and supports stable performance in high-cleanliness instrumentation and measurement lines.

Unlike purely mechanical polishing, which may leave directional surface textures, our process is designed to deliver a more consistent inner-surface morphology. Typical inspection data (including roughness and micro-surface observations) can be shared upon request.

Typical applications include

• Precision instrumentation and sampling lines (gas / liquid)

• Flow control and sensing assemblies

• High-cleanliness process utilities and analytical systems

• Pharma / biotech and chemical processing applications

• Aerospace / rail systems requiring corrosion resistance and reliability

Chromatography Empty Columns & Hardware

A complete selection of empty column hardware for HPLC / UHPLC—reliable supply, broad SKUs, and compatible accessories from one source.

• Wide range of column bodies, end fittings, frits, and accessories

• Consistent availability from a long-term specialized partner

• Custom machining available for specific dimensions and interfaces

UHP-Grade Chemically Polished 316L Stainless Steel Tubing

We supply 316L stainless steel tubing with controlled chemical polishing (CP) for applications where inner-surface condition and cleanliness directly affect process stability.

Standard lengths are 4 m and 6 m (up to 6 m). Our CP process is engineered for consistent inner-surface smoothness and batch-to-batch repeatability—especially in fine inner diameters where conventional inner polishing is difficult to execute reliably at scale. Typical capability details (length, OD/ID range, and inspection results) can be shared upon request.

Typical applications include:
• Semiconductor process equipment and high-purity utilities
• Pharma / biotech and chemical processing systems
• Food and hygienic process lines
• Precision equipment and instrumentation
• Aerospace / rail systems where corrosion resistance and reliability are critical

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