Tianjin Wangxia Roller Shutter Door Torsion Springs o loʻo gaosia mai le maualuga-tensile, suauʻu-tempered spring wire, feiloai ASTM A229.All o tatou Springs o loʻo faʻapipiʻiina fale gaosi e faʻaitiitia ai feteʻenaʻiga ma le pala aʻo faʻateleina le ola o le tautotogo.
Roller shutter door springs counterbalance le mamafa o le faitotoa ina ia faigofie ona tatala ma tapunia.Latou auauna atu i le faamoemoega lava e tasi o counterweights faaaogaina e faapaleni faitotoa i seneturi.O le mea lea, e taua tele le tautotogo uaea umi ma tekinolosi faʻapotopotoga e mafaufau i le faʻamaoni ma le saogalemu mo se taimi umi lava.