The marking '4B240' tells you that the cylinder is made of _______________

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Multiple Choice

The marking '4B240' tells you that the cylinder is made of _______________

Explanation:
Cylinder markings convey the material the cylinder is made from and its pressure rating. In the marking 4B240, the 4B portion identifies a steel cylinder, not aluminum or plastic, while the 240 indicates a service pressure of 2400 psi. So this code shows the cylinder is steel. Understanding these markings matters because the material influences inspection intervals, corrosion concerns, and safe handling and filling practices; aluminum or plastic cylinders carry different codes and properties, so recognizing the steel designation helps ensure you apply the correct safety standards.

Cylinder markings convey the material the cylinder is made from and its pressure rating. In the marking 4B240, the 4B portion identifies a steel cylinder, not aluminum or plastic, while the 240 indicates a service pressure of 2400 psi. So this code shows the cylinder is steel. Understanding these markings matters because the material influences inspection intervals, corrosion concerns, and safe handling and filling practices; aluminum or plastic cylinders carry different codes and properties, so recognizing the steel designation helps ensure you apply the correct safety standards.

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