ʻO nā paipu huinahā like ʻole o nā kikoʻī like ʻole
1. ʻAʻole ʻoi aku ka ʻae ʻia ʻana o ka mānoanoa o ka pā o ka paipu huinahalike ma mua o 10% o ka mānoanoa o ka pā i koho ʻia inā ʻaʻole ʻoi aku ka mānoanoa o ka pā ma mua o 10mm, a hoʻohui a emi ʻole 8% o ka mānoanoa o ka pā ke ʻoi aku ka mānoanoa o ka pā. 10mm, koe wale no ka mānoanoa o ka paia o ke kihi a me ka weld wahi.
2.ʻO ka lōʻihi o ka hāʻawi ʻana maʻamau o ka paipu rectangular square he 4000mm-12000mm, ʻo ka hapa nui 6000mm a me 12000mm. Ua ʻae ʻia ka pahu ʻehā e hāʻawi i nā huahana lōʻihi pōkole a paʻa ʻole ma lalo o 2000mm, a i ʻole ma ke ʻano o ka paipu interface, akā e ʻoki ka Demander i ka paipu interface i ka wā e hoʻohana ai. ʻAʻole ʻoi aku ke kaumaha o ka lōʻihi pōkole a me nā huahana lōʻihi ʻole ma mua o 5% o ka nui o ka hāʻawi ʻana, a no nā paipu manawa kūhāhā me ke kaumaha theoretical i ʻoi aku ma mua o 20kg / m, ʻaʻole ia e ʻoi aku ma mua o 10% o ka nui o ka lawe ʻana.
3. ʻAʻole ʻoi aku ka nui o ka piko o ka paipu ʻāpana ʻehā ma mua o 2mm no ka mika, a ʻaʻole ʻoi aku ka nui o ke degere kūlou ma mua o 0.2% o ka lōʻihi.
Nā kahua noi o ka paipu square: hoʻohana nui ʻia ia i ka hana mīkini, ʻoihana kūkulu, ʻoihana metallurgical, nā kaʻa mahiʻai, nā hale ʻōmaʻomaʻo mahiʻai, ʻoihana kaʻa, ke kaʻaahi, nā kiaʻi alanui, ka iwi ipu, nā lako, nā mea hoʻonaninani a me nā hale kila.
No ka hana ʻenekinia, ka pā pā aniani, ka hoʻonani puka a me ka puka makani, ka hale kila, ka pale, ka hana ʻana i nā mīkini, ka hana kaʻa, ka hana ʻana i nā mea hale, ka hana moku, ka hana ipu, ka mana uila, ke kūkulu ʻana i ka mahiʻai, ka hale ʻōmaʻomaʻo mahiʻai, ka pahu kaʻa, ka pahu kaʻa, ka papa, nā lako hoʻoikaika kino, nā mea leʻaleʻa a me nā mea mākaʻikaʻi, nā lako kila, nā ʻano kikoʻī like ʻole o ka pahu aila, ka paipu aila a me ka paipu paipu, ka wai, ke kinoea, ka wai hoʻoheheʻe Ea, ka hoʻomehana a me nā kahe wai ʻē aʻe, ke kaua ahi a me ke kākoʻo, ka ʻoihana hana, etc.
GB / t6728-2002, GB / t6725-2002, gbt3094-2000, JG 178-2005, ASTM A500, JIS g3466, en10210 a i ʻole ʻaelike ʻenehana.
ʻO GB / t3094-2000 (maʻamau ʻāina) paʻi ʻia i ka paipu rectangular kūikawā
ʻO GB / t6728-2002 (maʻamau aupuni) i hoʻokumu ʻia ke anuanu ʻāpana ʻāpana kila no ka hale
ʻO ASTM A500 (American Standard) carbon steel Cold-Formed Welded rectangular tubes a me seamless rectangular tubes me nā ʻāpana poepoe a me nā ʻāpana kūikawā no ka hale.
En10219-1-2006 (European standard) i hoʻoheheʻe ʻia i nā ʻāpana hollow i hoʻoheheʻe ʻia me ka mea ʻole a me ka palaoa maikaʻi.
ʻO JIS g 3466 (ke kūlana Iapana) paipu ʻāpana ʻehā no ka hana maʻamau
