M'makina owotchera malo osungiramo mphamvu, kuwonetsetsa kuti ma weld joints ndi ofunika kwambiri. Kuti izi zitheke, njira zosiyanasiyana zowunikira zimagwiritsidwa ntchito powunika zolumikizira zowotcherera, monga kusalumikizana kokwanira, ming'alu, kapena porosity. Nkhaniyi ikufotokoza zaukadaulo wosiyanasiyana...
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