The term CPCB4+ refers to the Central Pollution Control Board (CPCB) Norms Stage 4+ for emission standards in India, primarily targeting construction machinery, industrial equipment, and vehicles to control air pollution. This is similar to Euro IV or BS IV standards in other countries.

Equipment mentioned:

• DG (Diesel Generators): These are used for providing power to construction equipment and for site operations, especially where there is no access to grid electricity. They must comply with CPCB4+ norms, meaning they are designed to limit emissions.
• Piling Rig: This is heavy construction equipment used for driving piles into the soil to provide foundation support for buildings or other structures. A piling rig that adheres to CPCB4+ norms would have engines designed to limit emissions during its operations.
• HDD (Horizontal Directional Drilling) Equipment: HDD is used for laying pipes and cables underground without needing to excavate large trenches. This equipment is also required to follow the CPCB4+ standards, ensuring lower emissions during drilling activities.

In summary, the CPCB4+ DG, piling rig, and HDD equipment are all designed to adhere to stringent emission standards, making them more eco-friendly and compliant with Indian pollution control regulations.