Spiral simbi pombi inowanzotorwa kuitira mvura uye basa rekudhonza nekuti inogona kuodha muhupamhi dhayamita renji. Muzvinyorwa zvinopihwa zvechigadzirwa, spiral pombi saizi inogona kumhanya kubva kuDN200 kuenda kuDN4000, uye maitiro ekugadzira anochengeta gap reweld rakatenderedza 1 kusvika 3 mm risati ranyudzwa arc welding. Kune makondirakiti, zvinoreva kuti pombi inogona kurongwa yakatenderedza kuyerera kudiwa, mugero wakafara uye kusimudza mamiriro panzvimbo yekumanikidza saiti kuti ikwane saizi imwe yakagadziriswa.
Hebei Yugang Pipe Manufacturing Co., Ltd. kazhinji inotarisa simbi giredhi, ukobvu hwemadziro, chikumbiro chekuputira uye kureba kwekutumira kusati kwagadzirwa. Iri idanho rakajeka, asi rinoponesa dambudziko gare gare. Rondedzero yakajeka yepombi inobatsirawo timu yesaiti kuburitsa nechikamu uye chengetedza pombi chaiyo pamutsetse wekurudyi. Kana nzira iine mabhende akawanda kana kuyambuka migwagwa, aya macheki ekutanga anobatsirawo mutengi kusarudza kuti ndezvipi zvikamu zvinofanirwa kutanga kutakurwa.
