Hoʻohana nui ʻia nā paipu rectangular
ʻO nā mea maʻamau o nā paipu square welded he: Q235A, Q235C, Q235B, 16Mn, 20 #, Q345, L245, L290, X42, X46, X60, X80, 0Cr13, 1Cr17, 00cr19ni18, 1Cr17, 00cr19ni18, etc
Welded kuhiliʻole kila paipu no ka hoʻonani (GB / T 18705-2002), kuhiliʻole kila welded paipu no ka hale hoʻonani (JG / T 3030-1995), nui anawaena welded kila paipu no ka haʻahaʻa puʻe wai lawe (GB / T 3091-2001), a me ka paipu kila welded no ka mea hoʻololi wela (yb4103-2000).
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
Hoʻohana nui ʻia ia i ka hana mīkini, ʻoihana kūkulu, ʻoihana metallurgical, nā kaʻa mahiʻai, nā hale ʻōmaʻomaʻo mahiʻai, nā ʻoihana kaʻa, nā alahao, nā kiaʻi alanui, nā 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.
