Kumbali ya njira kupanga, zikhoza kugawidwa mu mipope zitsulo welded kwa otsika kuthamanga madzimadzi mayendedwe, mipope zitsulo welded, mipope wozungulira zitsulo, etc. Wopanda chitsulo chitoliro angagwiritsidwe ntchito zosiyanasiyana madzi ndi mpweya mapaipi. mipope welded angagwiritsidwe ntchito mapaipi madzi, mapaipi mpweya ...
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