SSAW pipe- spiral seam welded steel pipe Chitoliro: SSAW chitoliro ndi chitoliro chachitsulo chozungulira, SSAW chitoliro chili ndi ubwino wa mtengo wotsika mtengo, kupanga bwino, kugwiritsa ntchito kwakukulu, mphamvu zambiri ndi kuteteza chilengedwe, kotero...
Werengani zambiri