Seamless square le rectangular tube e na le matla a matle, ho tiea, polasetiki, welding le lisebelisoa tse ling tsa theknoloji, le ductility e ntle. Lera la eona la alloy le khomaretsoe ka thata ho setsi sa tšepe. Ka hona, li-square tse se nang moeli le li-rectangular tube ...
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