1. Don bututu masu babban buƙatun aski, saboda rashin daidaituwar iskar gas ta masu amfani, yawan canjin bututun bututu, da matsananciyar matsananciyar wahala da bututun ƙarfe ke fama da su, lahanin da ke cikin bututun zai faɗaɗa ƙarƙashin matsin lamba. Karfe welded bututu tare da yawa welds wani ...
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