1. Ingcaciso Esemgangathweni Lo mgangatho ugubungela iityhubhu zentsimbi ezingenamthungo zeebhoyila zomphunga kunye neepayipi, kuquka iityhubhu ezitsalwa ngokubandayo, eziqengqelekayo ngobushushu, ezicinezelwe ngokushushu nezincitshisiweyo. Ubukhulu: iityhubhu eziqengqelekayo ngobushushu OD 25-530 mm, ubukhulu bodonga 2.5-90 mm; iityhubhu ezitsalwa ngokubandayo OD 25-108 mm, ubukhulu bodonga...
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