Ko te karaihe toughened no te karaihe haumaru.Ko te karaehe TOUGHENED he ahua o te karaihe prestressed, i roto i te tikanga ki te whakapai ake i te kaha o te karaihe, te tikanga whakamahi tikanga matū tinana ranei, te hanga i te ahotea kōpeketanga i runga i te mata o te karaihe, karaihe mau kaha o waho tuatahi offset surac...
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