Pipeline insulation issues

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I have some questions regarding the standard (GB 50264-2013 Code for Design of Thermal Insulation of Industrial Equipment and Piping). I would like to ask the experts here: Has anyone used this standard to calculate the optimal thickness for thermal insulation? The main change compared to the previous version lies in the calculation method for the heat loss coefficient; in the old version, if the equipment was used indoors, the value of a was set at 11.63, while outdoors it was calculated as 11.63 + w^0.5, where W represents the average wind speed. The new version of the formula is quite complex; see the specifications for details. This results in a significant increase in the insulation thickness of the tube. Additionally, with current rising material costs, the prices of insulation materials and installation services have increased only slightly; as a result, after calculating the required insulation thickness, it is 60 mm greater compared to the standards of the previous version. It feels completely unreasonable. For example, for a DN600 pipe with a design temperature of 200 degrees, according to the new standards, the insulation thickness required is approximately 250 mm. This has a significant impact on pipeline layout; it takes up a lot of space, and even the standard support brackets are not long enough. It’s really hard to design