Decarbonization from the
materials stage, achieved through
proprietary technology and GX Steel
Chapter 01
The Shift Toward Achieving Carbon Neutrality
Efforts toward decarbonization are accelerating across all industries as the world moves toward achieving carbon neutrality by 2050. In Japan, approximately 40% of CO2 emissions are related to buildings, and the construction industry is being called upon to step up its efforts. Beyond improving energy efficiency during use, there is a growing movement to calculate and disclose CO2 emissions across the whole building life cycle from construction to demolition, and it is becoming increasingly important to present figures on a component level.
To date, the Sanwa Group has worked to reduce CO2 emissions at the usage stage with the Re-carbo series. As the next step, we are expanding our perspective to cover materials and manufacturing processes. One such initiative is YAG Door green flag.
Chapter 02
YAG Door green flag: Balancing Weight Reduction and Environmental Performance
Our YAG Doors use laser processing to reduce the thickness of surface materials and other components to 1.0 mm, resulting in a reduction of approximately 45% in steel usage compared to standard heavy steel doors. By achieving lighter weight, we have made these products easier to install and less resource-consuming, striving to balance functionality with environmental performance.
The newly developed YAG Door green flag product combines this weight-reduction technology with NSCarbolex® Neutral, a GX Steel offering from Nippon Steel that reduces CO2 emissions during manufacturing, to lower environmental impact starting at the materials stage. Compared to standard steel doors, this product successfully reduces CO2 emissions by approximately 139 kg-CO2*1 per door.
Furthermore, we have established a mechanism that automatically calculates CO2 emission reductions by entering door size and specifications into the system and issues the results as a certificate. This product not only visualizes efforts toward decarbonization but also contributes to reducing customers' Scope 3*2 emissions and managing emissions across the entire supply chain.
- Based on calculations by Sanwa Holdings Corporation. For a door measuring
W800 mm × H2,000 mm, single-leaf, without windows or louvers - One category of corporate greenhouse gas (GHG) emissions, including CO2. Excludes a company's direct emissions (Scope 1) and purchased electricity (Scope 2); refers to indirect emissions generated throughout the entire supply chain, including raw material procurement, logistics, use, and disposal
Chapter 03
Visualizing CO2 Emission Reductions with NSCarbolex® Neutral*3
NSCarbolex® Neutral is a kind of GX Steel (steel for green transformation) produced by Nippon Steel Corporation. It is the outcome of CO2 emission reductions achieved through the transformation and improvement of steel manufacturing processes. Emission reduction amounts are verified by third-party organizations for each project, and the CO2 emission reductions stated on issued certificates can be used by customers to calculate and report their Scope 3 emissions in accordance with the GHG Protocol. A major strength is that it can be applied to any product while maintaining the same quality and performance as conventional products. Through the use of materials with this environmental value, we will contribute to decarbonization across the entire supply chain in the building materials sector.
- NSCarbolex and its logo are registered trademarks of Nippon Steel Corporation.
