Not known Facts About Kemarin 12.11
Welded stair treads are widely used for their strength and relieve of installation and they are universally Utilized in industrial and professional 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