What Is the Difference Between Tube and Pipe?

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管材 · Tube · Pipe · 标准

Differences in dimension designation, tolerance systems, applications, and standards systems.

Pipe is designated by nominal diameter (NPS/DN), with wall thickness expressed as Schedule; it is mainly used for conveying fluids, and its size series is highly standardized.

Tube is designated by actual outside diameter × wall thickness, with tighter tolerances; it is commonly used for heat exchangers, instrumentation, and precision structures, and its size series is more flexible.

When purchasing, specify clearly: outside diameter, wall thickness, length, standard (ASTM A312 / A269 / EN 10216, etc.), and surface and testing requirements. Do not simply write "stainless steel pipe."

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。

What Is the Difference Between Tube and Pipe?

Differences in dimension designation, tolerance systems, applications, and standards systems.

Pipe is designated by nominal diameter (NPS/DN), with wall thickness expressed as Schedule; it is mainly used for conveying fluids, and its size series is highly standardized.

Tube is designated by actual outside diameter × wall thickness, with tighter tolerances; it is commonly used for heat exchangers, instrumentation, and precision structures, and its size series is more flexible.

When purchasing, specify clearly: outside diameter, wall thickness, length, standard (ASTM A312 / A269 / EN 10216, etc.), and surface and testing requirements. Do not simply write "stainless steel pipe."

本文由 SteelWe 编辑与行业专家整理，内容仅供行业交流参考，不构成交易或投资建议。引用请注明来源。