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Ukutyeba okuthe gqolo kweNqwelo-moya yeNqwelo-moya
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Umatshini weAuger oguquguqukayo
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ITapered Twisted Tape Turbulators iFakela uThutho loBubushushu olongezelelweyo lweBoiler yoMlilo yeGesi yeOyile yomphunga
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Inxalenye ye-Helical Blade, kulula ukuyihlanganisa kunye ne-weld
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I-Spiral Blade eqhubekayo, enobungqingqwa obungaguqukiyo, umcu ovuthelweyo kwi-faye processing