The 5-Second Trick For grating steel stair
Welded stair treads are widely applied for his or her toughness and relieve of installation and are universally Employed in industrial and business applications. Tekanan-terkunci bar kisi, atau swaged kisi, adalah di mana batang baja dipaksa melalui dan terkunci dalam beban bar. Terpaku bar kisi adalah di mana bar beban yang terpaku pada salib bar