(1) Hoʻomaka e hoʻopili i nā huahana kīwī kīwīʻole:
Gb / t8162-2008 (seamless kila kila kila no ka hoʻohanaʻana i ka hana hoʻonohonoho). Hoʻohana nuiʻia no nā hana maʻamau a me nā papa hana. ʻO kāna mau mea koho hoʻohui i ke kila Q345, 20cr, 40crmo, 20crmo, he 43-35crmo, 42crmo, etc.
GB / T8163-1999 (SEMERSLE SMAL PIPE no ka laweʻana i nā wai). Hoʻohana nuiʻia no ka laweʻana i nā pihi wai wai i nāʻenehanaʻenehana a me nā mea nui nui. Nā Kūlana Kūlana (nā helu) he 20, Q345, etc.
Gb3087-2008 Hoʻohana nuiʻia ma nā pipela no ka laweʻana i nā wai haʻahaʻa haʻahaʻa a me nā kino e like me nā buileʻenehana a me nā mea kanu home. ʻO nā mea hōʻike e pili ana i ka A. 10 a me No. 20 kila.
GB / T17396-P2009 Ua hoʻohana nuiʻia ia e hana i ke kākoʻo hydraulic, nā cylinders a me nā kolamu i nā mines collas, a me nā kolamu hydraulic'ē aʻe. ʻO kāna mau mea hōʻike he 20, 45, 27simn, etc.
(2) Nā hoʻohanaʻana i nā pipes silanoʻole: 1.ʻO nā paipu-papa hana, etc. 2. 4