TOP SCAFFOLDING BASE PLATE SECRETS

Within an ACB, the arc is interrupted by directing a substantial-velocity blast of compressed air onto the arc zone. The superior-speed air cools and sweeps absent the ionized gases, facilitating arc extinction. Supaya pengunaannya tepat, maka para petugas lapangan konstruksi perlu mengenal tentang tabel angkur baja. Data di setiap kolomnya akan s