多层M（金属）管道是由多个层次组成的管道，其中金属层是其中的一层。金属层的焊缝强度和层间粘结是多层M（金属）管道的重要性能指标。为了保证多层M（金属）管道的质量和安全性能，需要对金属层的焊缝强度和层间粘结进行测试。

ISO/TR 18124:2006标准提供了一种测试多层M（金属）管道金属层焊缝强度和层间粘结的方法。该标准使用锥形试验来测试金属层的焊缝强度和层间粘结。锥形试验是一种常用的材料力学测试方法，可以测量材料的强度和变形性能。

在测试过程中，将锥形试验机的锥形头放置在金属层的焊缝处，然后施加力量，直到金属层的焊缝或层间粘结发生破坏。通过测量施加力量和破坏时的位移，可以计算出金属层的焊缝强度和层间粘结强度。

ISO/TR 18124:2006标准适用于多层M（金属）管道的生产和使用。该标准的实施可以帮助生产厂家和用户评估多层M（金属）管道的质量和安全性能，从而提高多层M（金属）管道的使用效果和可靠性。

相关标准
- ISO 17484-1:2014 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 1: Specifications for systems
- ISO 17484-2:2014 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 2: Pipes
- ISO 17484-3:2014 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 3: Fittings
- ISO 17484-4:2014 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 4: Valves
- ISO 17484-5:2014 Plastics piping systems — Multilayer pipe systems for indoor gas installations with a maximum operating pressure up to and including 5 bar (500 kPa) — Part 5: Fitness for purpose of the system