Takirere Mono: Ngā Takirere Rino Koranu Pēhanga-Teitei mō ngā Mahi Keri
E tutuki ana ngā rauemi i ngā paerewa ASTM me AISI, ā, e tutuki ana ngā whakaritenga hangarau i ngā paerewa API Spec 6A. He tino pai te mahi hiri o ēnei takirere, he tino pono, he ngāwari te whakahaere, ā, he kaha te whakamahi. He hototahi ngā hononga pito ki ngā miro paipa me ngā miro ngongo, ā, he pai mō ngā tono kanorau o ngā puna wai.
Tuhia tō karere ki konei ka tuku mai ki a mātou





