Ko te wāhanga tapawhā tuwhera, te wāhanga tapawhā tuwhera, te wāhanga porowhita tuwhera, te paipa maitai kua oti te whakapūmau, te paipa maitai kua whakapūmau wera me ētahi atu hua o Yuantai Derun e whakatutuki ana i ngā paerewa EN10210, EN10219, ASTM A53, ASTM A500, ASTM A501, ASTM A106, BS1387, JIS STKR400, JIS STKR490, GB/T700-2006, GB/T6728-2002; Ko te paipa maitai porowhita rua-taha e rukuhia ana ki raro, me te paipa maitai kore hononga, me tutuki ki ngā paerewa GB / T9711-2011, API Spec 5L me te API 5CT o te umanga hinu o Haina.

He mea nui ki te kamupene Yuantai te kounga o ngā hua, he nui te haumi ki te whakaurunga o ngā taputapu matatau me ngā tohunga ngaio, ā, ka whakapau kaha ki te whakatutuki i ngā hiahia o ngā kiritaki i te kāinga me tāwāhi. I te tau 2023, kua paahitia e te taiwhanga rōpū Yuantai Derun te tiwhikete CNAS.

Ka taea te wehewehe i ngā ihirangi whakamātautau wāhanga tuwhera maitai ki: te hanganga matū, te kaha tuku, te kaha kume, te āhuatanga pānga, me ētahi atu

I taua wā anō, ka taea hoki e te kamupene te whakahaere i te kimi hapa me te whakamahana me ētahi atu tukanga maimoatanga wera i runga ipurangi e ai ki ngā hiahia o te kiritaki.