ʻO ka paipu kila humuhumu 20 # e hoʻohana pinepine i ke kila kalapona kiʻekiʻe 20 # ma ke ʻano he mea maka, he paipu kila humuhumu pale wela kalapona kiʻekiʻe i hoʻohana pinepine ʻia i nā hale kūkulu a me nā ʻano mechanical.

ʻO ke kila 20# nā ʻano penei: ka plasticity maikaʻi a me ka weldability ikaika. Ma muli o kona ikaika haʻahaʻa, kūpono ia no ka hana anu a me nā hiʻohiʻona ikaika ʻole.

Hiki ke hoʻohana ʻia ka paipu kila 20 # Seamless i nā ʻoihana aʻe:

1. No nā paipu paila haʻahaʻa a me ke kaumaha waena, ʻo ke kūlana hoʻokōGB 3087, hoʻohana ʻia e hana i nā ʻōmole superheater a me nā ʻōmole paia i hoʻomaʻalili ʻia e ka wai o nā paila haʻahaʻa a me ke kaomi haʻahaʻa (kaomi hana ≤5.9 MPa), aia i loko o ke kiʻekiʻe wela (≤480 ℃) + kahi hoʻomehana wai mahu no ka manawa lōʻihi

2. Nā paipu haki ʻaila, ʻo ke kūlana hoʻokōGB 9948, hoʻohana ʻia no nā reactors, nā mea hoʻololi wela, a me nā mea ʻē aʻe o nā ʻāpana hoʻomaʻemaʻe petroleum, e hoʻopili ana i nā media acidic (H₂S, CO₂) a me ke kaomi kiʻekiʻe (a hiki i 15 MPa)

3. Nā lako hana hoʻouluulu kiʻekiʻe, ʻo ke kūlana hoʻokōGB 6479, hoʻohana ʻia no nā lako mea hoʻouluulu kiʻekiʻe (10 ~ 32 MPa) e like me ka ammonia synthetic a me ka urea, e hoʻopili ana i nā mea hoʻoheheʻe nui (e like me ka ammonia wai, urea heheʻe)

ʻO nā paipu kila wili ʻole i ʻōwili wela ʻia no nā kākoʻo hydraulic, ʻo ke kūlana hoʻokōGB/T17396, hoʻohana ʻia no nā kolamu kākoʻo hydraulic a me nā jacks i loko o nā lua lanahu, a kū i nā ukana alternating alapine kiʻekiʻe (50 ~ 100 MPa) a me ka haʻalulu hopena