Kuyerekeza njira zopangira chitoliro cha lsaw ndi chitoliro cha dsaw

Mapaipi a LSAW omwe ali ndi chitsulo chofewa (Longitudinal Submerge-arc) ndi mtundu wa chitoliro chachitsulo chomwe msoko wake wofewa umafanana ndi chitoliro chachitsulo, ndipo zipangizo zake ndi mbale yachitsulo, kotero makulidwe a khoma la mapaipi a LSAW akhoza kukhala olemera kwambiri mwachitsanzo 50mm, pomwe mainchesi akunja amakhala ochepa kwambiri mpaka 1420mm. Chitoliro cha LSAW chili ndi ubwino wa njira yosavuta yopangira, kupanga bwino kwambiri, komanso mtengo wotsika.

Chitoliro cha Double Submerged Arc Welded (DSAW) ndi mtundu wa chitoliro chachitsulo chozungulira chopangidwa ndi chitsulo chozungulira ngati zinthu zopangira, nthawi zambiri chotenthetsera komanso cholumikizidwa ndi njira yodziyikira yokha ya arc yozungulira mbali zonse ziwiri. Chifukwa chake kutalika kwa chitoliro cha DSAW kumatha kukhala mamita 40 pomwe kutalika kwa chitoliro cha LSAW ndi mamita 12 okha. Koma makulidwe apamwamba kwambiri a makoma a mapaipi a DSAW amatha kukhala 25.4mm kokha chifukwa cha kuchepa kwa ma coil otentha.

Chinthu chodziwika bwino cha chitoliro chachitsulo chozungulira ndichakuti m'mimba mwake wakunja ukhoza kupangidwa kukhala waukulu kwambiri, Cangzhou Spiral Steel Pipes Group Co.ltd imatha kupanga mapaipi akuluakulu okhala ndi m'mimba mwake wakunja wa 3500mm kwambiri. Panthawi yopanga, cholumikizira chachitsulo chimasokonekera mofanana, kupsinjika kotsala kumakhala kochepa, ndipo pamwamba pake sipakukanda. Chitoliro chachitsulo chozungulira chokonzedwa chimakhala ndi kusinthasintha kwakukulu pakukula kwa m'mimba mwake ndi makulidwe a khoma, makamaka popanga chitoliro chapamwamba, chachikulu makulidwe a khoma, ndi m'mimba mwake kakang'ono ndi chitoliro chachikulu makulidwe a khoma, chomwe chili ndi ubwino wosayerekezeka kuposa njira zina. Chikhoza kukwaniritsa zofunikira zambiri za ogwiritsa ntchito muzofotokozera za chitoliro chachitsulo chozungulira. Njira yotsogola yolumikizira arc yolumikizidwa mbali ziwiri imatha kulumikiza pamalo abwino kwambiri, zomwe sizophweka kukhala ndi zolakwika monga kusalinganika bwino, kupotoka kwa welding ndi kulowa kosakwanira, ndipo ndikosavuta kuwongolera mtundu wa welding. Komabe, poyerekeza ndi chitoliro cholunjika cha msoko chokhala ndi kutalika komweko, kutalika kwa weld kumawonjezeka ndi 30 ~ 100%, ndipo liwiro lopanga ndi lotsika.