What size sleeve is necessary for a 6-inch schedule 10 pipe with an additional 2 inches of insulation?

To determine the necessary sleeve size for a 6-inch schedule 10 pipe with an additional 2 inches of insulation, it's important to first understand the outside diameter of the pipe and the additional insulation that needs to be accounted for.

A 6-inch schedule 10 pipe typically has an outer diameter of approximately 6.625 inches. When you add the insulation, which is an additional 2 inches on all sides of the pipe, you need to determine the total diameter. The insulation adds a thickness of 2 inches around the pipe, effectively increasing the diameter to 6.625 inches + 2 inches + 2 inches (for both sides) = 10.625 inches.

When selecting a sleeve size, it is common practice to round up to the nearest standard sleeve size that comfortably fits the insulated pipe. Among the choices provided, a sleeve with a diameter of 12 inches would be the fitting size to accommodate the diameter of approximately 10.625 inches. However, considering that the sleeve used might require a bit of extra space for ease of installation or alignment, opting for a 12-inch sleeve is logical.

Therefore, the chosen answer reflects a common industry practice of accommodating a bit more room to ensure ease of use and installation