ASTM B88: Standard Specification for Seamless Copper Tube

ASTM B88, published by ASTM International, stands as a crucial standard in the realm of plumbing and heating applications. This specification delineates the requirements for seamless copper water tubes, outlining the materials, dimensions, testing procedures, and applications of these tubes.


The primary objective of ASTM B88 is to provide a comprehensive guideline for seamless copper water tubes employed in general plumbing and similar applications. It encompasses various copper alloys, including UNS No. C10200, C12000, C12200, and others, ensuring versatility in material choices.


ASTM B88 specifies the acceptable copper alloys for the manufacturing of seamless tubes. The mentioned alloys exhibit distinct properties, such as excellent corrosion resistance and thermal conductivity, making them suitable for conveying fluids like water, oil, and gas.

Dimensions and Tolerances:

The standard meticulously details the dimensions and tolerances of seamless copper tubes. It addresses aspects like sizes, wall thickness, and permissible variations, ensuring uniformity and precision in tube specifications. This precision is vital for seamless integration into plumbing systems.

Testing and Certification:

To ensure the quality and reliability of copper tubes, ASTM B88 mandates a series of tests. These include evaluations of tensile strength, elongation, and flattening, among others. Compliance with these testing requirements ensures that the tubes meet the performance standards outlined in the specification. Additionally, the standard provides guidelines for marking and certification to facilitate traceability and quality assurance.


ASTM B88 copper tubes find widespread use in residential and commercial plumbing systems. Their seamless construction and corrosion resistance make them well-suited for conveying various fluids. Additionally, these tubes are integral in heating applications, contributing to the efficiency of radiators and heat exchange systems.

Industry Acceptance:

ASTM B88 has gained widespread acceptance and recognition within the plumbing and construction industries. Its adoption by manufacturers, suppliers, and contractors ensures a common benchmark for quality and compatibility. Professionals often refer to this standard to guarantee the reliability and performance of copper water tubes in diverse applications.

In conclusion, ASTM B88 plays a pivotal role in ensuring the reliability and quality of seamless copper water tubes. Its comprehensive specifications cover a range of critical aspects, from material selection to testing procedures, making it an indispensable tool for those involved in plumbing and heating applications. As with any standard, it is essential to consult the latest version for the most up-to-date and accurate information.