Truss head phillips screws amagwiritsidwa ntchito kwambiri zomangira zomwe zimadziwika ndi mapangidwe awo apadera amutu, omwe amapereka malo okulirapo kuti apititse patsogolo kukhazikika komanso kugawa katundu. Ndili ndi zaka pafupifupi 30 mumakampani othamangitsa, fakitale yathu imagwira ntchito yopanga zomangira zamutu za truss. Timapereka zosankha zambiri ndikupereka ntchito zosinthira makonda kuti tikwaniritse zofunikira zamakasitomala. Kaya timakonda kutengera zitsanzo, zojambula, kapena zosowa zenizeni monga zomwe zimafunidwa kapena kusintha kopepuka, tili ndi ukadaulo wopereka zomangira zamutu za truss zapamwamba kwambiri zogwirizana ndi zomwe mukufuna. Kuphatikiza apo, timapereka zambiri zogulitsa zisanachitike, zogulitsa, komanso ntchito zogulitsa pambuyo pake, zomwe zimapereka mayankho athunthu kwa makasitomala athu.