ʻO ka Q345B nui-diameter seamless square steel pipe he huahana kila lōʻihi me ka ʻāpana ʻāpana a ʻaʻohe seams, i hana ʻia me ka paipu kila maʻemaʻe e like me ke kumu kumu ma o ka ʻōwili a i ʻole ke kaha anu. Ke hoʻohālikelike ʻia me nā mea kila paʻa e like me ke kila poepoe, ʻoi aku ka maʻalahi o ka paona o nā paipu kila kuʻekuʻe ʻole ke anawaena nui i ka wā e like ai ke kulou a me ka ikaika torsional. He kila cross-section lākou a hoʻohana nui ʻia i ka hana ʻana i nā ʻāpana hana a me nā ʻāpana mechanical.

Q345B hiki ke hoʻokaʻawale ʻia nā paipu kila ʻaʻohe anawaena nui i loko o nā paipu kila square a me nā paipu kila kūikawā e like me nā ʻano ʻāpana cross-sectional. Ke kau ʻia ka ʻāpana keʻa pōʻai i ke kaomi radial kūloko a i waho paha, ʻano like ka ikaika. No laila, ʻo ka hapa nui o nā paipu kila he paipu pōʻai. Eia naʻe, loaʻa i nā paipu pōʻai kekahi mau palena. No ka laʻana, ma lalo o ke kūlana o ka lele ʻana o ka mokulele, ʻo ka paipu pōʻai ʻaʻole ia e like me ka ikaika e like me nā paipu kila square seamless a me nā paipu rectangular i ka ikaika kulou. Hoʻohana mau ʻia nā paipu square a me nā ʻāpana ʻehā i kekahi mau papa mīkini mahiʻai, kila a me nā lako lāʻau, a me nā mea ʻē aʻe.

He aha nā mea maikaʻi o Q345B nui anawaena huinaha paipu kila?
1. ʻOi aku ka lōʻihi o ka ili o Q345B nui-diameter square steel pipe a he anti-rust a anti-rust treatment. ʻAʻole e wikiwiki loa ka oxidation a ʻaʻole e hoʻokumu ʻia ka ʻōpala keʻokeʻo ma ka paipu kila square.
2. Loaʻa iā ia nā waiwai anti-corrosion a me ka ʻaʻahu, e hana ana i ka paipu kila seamless i ʻoi aku ka lōʻihi o ka lawelawe ʻana.
3. Mālama ʻia nā paipu kila ʻole. Ma hope o ka hoʻomehana ʻana, hana ʻia ka galvanizing wela ma kēlā me kēia kūlana o ka paipu kila ʻole, a pale ʻia nā kūlana convex a me concave.
4. No ka mea, ua wela ka paipu kila ma ka ʻaoʻao o waho, mālama ia i ka manawa o ka pena a i ʻole ka palaki ʻana, e ʻoi aku ka maʻalahi o ke kūkulu ʻana.
5. ʻAʻole e maloʻo a haki paha nā paipu kila kila wela i loko o 39 mau lā, no laila kūpono loa ia no nā ʻāpana ʻākau.

I ka wā o ka ʻae ʻia ʻana o ka papahana Q345B nui-diameter square steel pipe, he mea nui e hoʻolohe i ke kūlike o nā kihi ʻehā, a ʻo ka deviation o nā ʻaoʻao ʻehā i loko o ke ʻano o ka pae aupuni. ʻO ke kūlana aupuni no ka hoʻololi ʻana i nā paipu kuʻekuʻe a me nā paipu ʻehā: GB/T3094-2008, a aia nō ia i loko o kēia maʻamau. Ua hoʻoponopono ʻia ka hewa dimensional o ka huina R. 'Oi aku ka ikaika o ka paipu kila huinahalike alohilohi ma mua o ka paipu kila huinahalike humuhumu pololei ma ke 'ano o ke kaomi 'ana. ʻOi aku ka nui o ke kumukūʻai o ka paipu kila huinahā liʻiliʻi. E loaʻa i ka paipu kila huinahā ʻālohilohi nā hopena paipu i ka wā e hana ai. I ka hihia o kahi huelo palahalaha, ʻo ke koho ʻana i kahi huelo he ana hoʻohui.

No ke aha e pono ai ke kau ʻia nā paipu kila huinahā nui Q345B? ʻO ke kumu nui ka hoʻomaikaʻi ʻana i ka maikaʻi o nā paipu kila square square Q345B, me:
(1) E pili ana i ke kila kalapona kiʻekiʻe a me ke kila kila kila kiʻekiʻe, hiki ke hoʻopau i kona ikaika e hoʻomaikaʻi i ka drillability.
(2) E pili ana i ke kila haʻahaʻa haʻahaʻa, hiki ke hoʻopau i ka hoʻomaʻamaʻa wela no ka hoʻomākaukau ʻana no ka induction quenching hiki ke hōʻemi i ka deformation o nā paipu seamless a hoʻemi i nā kumukūʻai hana.
(3) E pili ana i ke kila kalapona kiʻekiʻe, hiki i ke kinai ke hoʻoneʻe i ka ʻōnaehana pūnaewele o ka hoʻohele cementite, he mea pono i ka spheroidizing annealing.
(4) No nā paipu liʻiliʻi nui a me ka liʻiliʻi nui a i ʻole nā ​​​​mea hoʻoheheʻe kila me nā ʻāpana keʻa i hoʻololi nui ʻia, hiki ke hoʻohana ʻia ke kinai ʻana ma kahi o ka hoʻomaʻamaʻa wela e hōʻemi i ke ʻano o ka deformation a me ka māwae a i ʻole e hoʻomākaukau no ka mālama wela.
(5) Hiki ke kinai ʻia nā ʻāpana hoʻoponopono hoʻoponopono wela o nā paipu liʻiliʻi no ka hoʻopau ʻana i ka pōʻino o ka wela i hiki ke mālama hou ʻia.
(6) Hoʻohana ʻia i ka hoʻoheheʻe make alumini e hoʻonui i ka ʻike ferrite maʻamau a hoʻomaikaʻi i ka ikaika a me ke kūpaʻa ʻana o nā castings.