... Tianjin,China FST18,FST20.FST25.FST30.FST45 FST50 FST black steel concrete nailsmaterial:carbon steellength:18-50mmorigin:Tianjin,China ... Safe and reliable. Applications: the FST black steel concrete nails are widely used in steel and wood furniture, sofa packaging, ... , advertising metal frame, glass curtain wall, color steel plate, light steel keel, gypsum version of the fixed and other industries ...