Watch as these steel pipes are transformed into deadly sharp ground-piercing tips. With each hammer strike, the triangular metal flaps are folded in to form a perfect spearhead.
파이프 끝 삼각형 금속을 접어 뾰족한 말뚝으로 만드는 작업
Doblando los extremos triangulares de tuberías de acero para crear puntas afiladas como lanzas