American Society yeKuedza uye Zvishandiso, ASTM.Aimbozivikanwa seInternational Association for Testing Materials (IATM).IAmerican Society yeZvishandiso uye Kuedza (ASTM) parizvino nderimwe remasangano makuru ekusimudzira zviyero pasi rose uye isangano rakazvimirira risingabatsiri.ASTM ine nhengo dzinosvika zviuru makumi matatu neina, dzinenge zviuru zvina kubva kumazana enyika dziri kunze kweUnited States.ASTM yakagadzira zvinopfuura zviuru gumi zviyero.

Warm makorokoto kuneDonghuang Mifananidzo ye DHZpakugamuchiraASTM Chitupa

Astm, donghuang simba remhepo, nyanzvi mukugadzira uye kutengesa kwakasiyana siyana kweflanges, forgings, tsanangudzo yakakwana, inogona kugadziriswa maererano nezvinodiwa nevatengi, kugamuchira vatengi vatsva uye vekare kubvunzurudzwa, mukurumbira wemhando ...

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