ASTM B360 is the standard specification for hard-drawn copper capillary tube for restrictor applications. It outlines the expectations for a copper tube product intended for use in flow-restricting components, helping buyers and users align on material form, basic quality, and suitability for service. By defining a clear technical reference, the standard supports more consistent procurement and evaluation of copper capillary tubing used where controlled restriction is important.

Purpose of ASTM B360

The purpose of ASTM B360 is to establish a common specification for hard-drawn copper capillary tube used as a restrictor. In practical terms, it gives manufacturers, purchasers, and inspectors a shared basis for describing and verifying the product. The standard is useful when dimensional control, material consistency, and repeatable performance matter in a small-bore copper tube intended for restriction applications. ASTM B360 helps reduce ambiguity in ordering and acceptance.

Common use cases of ASTM B360

This standard is commonly used when hard-drawn copper capillary tube is needed for restrictor applications in equipment or assemblies that rely on controlled flow through a small passage. It is relevant to sourcing, inspection, and quality control for copper tubing selected for precise restriction behavior. ASTM B360 may be referenced during product specification, incoming material review, or component manufacturing where a defined copper capillary tube is required.

Why ASTM B360 matters

ASTM B360 matters because it helps create consistency in a product that may be critical to system performance. When capillary tube is used as a restrictor, small differences in material or tube characteristics can affect results, so a recognized ASTM standard supports better compliance and product evaluation. For procurement and quality teams, ASTM B360 provides a dependable technical reference that can help lower risk and simplify comparison between suppliers.

• Hard-drawn copper capillary tube
• Restrictor application focus
• Specification and acceptance reference
• Supports procurement and quality checks
• Useful for controlled-flow components