Tianjin Wangxia Roller Shutter Door Torsion Springs waxaa laga soo saaraa silig-guga-sare, saliid-ku-kulul silig, kulanka ASTM A229. All our Springs yihiin warshad saliidayn si loo yareeyo khilaafyada iyo daxalka iyadoo la kordhinayo nolosha wareegga guga.
Ilaha dareemada rollerka ah waxay ka hortagaan miisaanka albaabka si ay u fududaato in la furo oo la xidho.Waxay u adeegaan isla ujeeddada miisaanka counter-ta loo isticmaalo in lagu dheellitiro albaabbada qarniyo.Sidaa darteed, tignoolajiyada guga iyo tikniyoolajiyadda isku-xidhka ee siliga raagaya waa lama huraan iyadoo la tixgelinayo isku halaynta iyo badbaadada muddo aad u dheer.