(1) Introduction to seamless steel pipe materials:
GB/T8162-2008 (paipu kila ʻole no ka hoʻohana ʻana i ka hana). Hoʻohana nui ʻia no nā hale maʻamau a me nā hana mechanical. ʻO kāna mau mea i hōʻike ʻia (nā māka): ke kila kalapona No. 20, No. 45 kila; kila kila Q345, 20Cr, 40Cr, 20CrMo, 30-35CrMo, 42CrMo, etc.
GB/T8163-1999 (paipu kila maʻemaʻe no ka lawe ʻana i nā wai). Hoʻohana nui ʻia no ka lawe ʻana i nā pipeline wai i ka ʻenekinia a me nā mea hana nui. He 20, Q345, etc.
GB3087-2008 (paipu kila maʻemaʻe no nā paila haʻahaʻa a me waena. Hoʻohana nui ʻia i nā pipelines no ka lawe ʻana i nā wai haʻahaʻa haʻahaʻa a me ka liʻiliʻi i nā boilers ʻoihana a me nā boilers home. ʻO nā mea i hōʻike ʻia he kila No. 10 a me No. 20.
GB/T17396-2009 (hoʻowili ʻia ka paipu kila maʻemaʻe ʻole no nā props hydraulic). Hoʻohana nui ʻia e hana i nā kākoʻo hydraulic, nā cylinders a me nā kolamu i loko o nā mines lanahu, a me nā cylinders hydraulic ʻē aʻe a me nā kolamu. ʻO kāna mau mea kikoʻī he 20, 45, 27SiMn, etc.
3 . 4. Nā paipu anti-static no nā mea kanu makani, etc.