ʻO nā paipu kila kabone Spiral Welded no nā paipu kinoea ma lalo o ka honua - EN10219
ʻO kekahi o nā pono nui opaipu kila wiliwili ʻiaʻo ia ka hiki ke hana i nā paipu o nā anawaena like ʻole me ka hoʻohana ʻana i nā ʻāpana o ka laulā like. He mea maikaʻi loa kēia no nā noi e koi ana i nā ʻāpana kila e hana i nā paipu kila nui. ʻO kēia kaʻina hana hana hou e hōʻoiaʻiʻo i nā paipu i hana ʻia ʻaʻole paʻa a ikaika wale nō, akā ʻo ka maikaʻi like ʻole.
Hoʻolālā kūikawā ʻia nā paipu kila kalapona i hoʻopaʻa ʻia no ka hoʻokomo ʻana i ka pipeline kūlohelohe ma lalo o ka honua a hoʻokō i nā koi koʻikoʻi oEN10219. Hōʻike kēia maʻamau i nā koi hoʻopuka ʻenehana no nā ʻāpana hollow welded welded hollow o nā kila non-alloy a me nā kila maikaʻi. No laila, kūpono ka paipu no ka hoʻohana ʻana i nā paipu kinoea kūlohelohe ma lalo o ka honua kahi mea koʻikoʻi ke kūpaʻa ʻana i ka corrosion a me ka pono o ke kūkulu ʻana.
Waiwai Mechanical
| kila kila | ikaika hua liʻiliʻi Mpa | Ka ikaika tensile | ʻO ka elongation liʻiliʻi % | ikehu hopena liʻiliʻi J | ||||
| Mānoanoa i kuhikuhi ʻia mm | Mānoanoa i kuhikuhi ʻia mm | Mānoanoa i kuhikuhi ʻia mm | ma ka wela hoao o | |||||
| ＜16 | ＞16≤40 | <3 | ≥3≤40 | ≤40 | -20 ℃ | 0 ℃ | 20 ℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 |
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - |
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - |
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Hoʻohui Kimia
| Papa kila | ʻAno de-oxidation a | % ma ka nuipa, ka nui | ||||||
| inoa kila | Helu kila | C | C | Si | Mn | P | S | Nb |
| S235JRH | 1.0039 | FF | 0,17 | — | 1,40 | 0,040 | 0,040 | 0.009 |
| S275J0H | 1.0149 | FF | 0,20 | — | 1,50 | 0,035 | 0,035 | 0,009 |
| S275J2H | 1.0138 | FF | 0,20 | — | 1,50 | 0,030 | 0,030 | — |
| S355J0H | 1.0547 | FF | 0,22 | 0,55 | 1,60 | 0,035 | 0,035 | 0,009 |
| S355J2H | 1.0576 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| S355K2H | 1.0512 | FF | 0,22 | 0,55 | 1,60 | 0,030 | 0,030 | — |
| a. Ua koho ʻia ke ʻano deoxidation penei: FF: Ke kila make loa i loaʻa nā mea hoʻopaʻa naikokene i nā nui e hiki ai ke hoʻopaʻa i ka nitrogen i loaʻa (e laʻa me min. 0,020 % ka huina Al a i ʻole 0,015 % soluble Al). b. ʻAʻole pili ka waiwai kiʻekiʻe no ka nitrogen inā hōʻike ka haku mele ʻana i ka liʻiliʻi o ka huina Al maʻiʻo o 0,020 % me ka palena liʻiliʻi Al/N o 2:1, a i ʻole inā lawa nā mea hoʻopaʻa paʻa N ʻē aʻe. E hoʻopaʻa ʻia nā mea paʻa N i ka Palapala Nānā. | ||||||||
Ma waho aʻe o kona ʻano maʻalahi i ka hana ʻana i nā paipu kila anawaena nui, hāʻawi nā paipu kila carbon welded spiral i nā pono ʻē aʻe he nui. ʻO kāna ʻenehana wiliwili spiral e hōʻoiaʻiʻo i ka ʻili o loko o ka paipu, e hōʻemi ana i ka hāʻule kaomi a hoʻomaikaʻi i nā ʻano kahe. He mea koʻikoʻi kēia i nā noi pipeline kinoea maoli, kahi e pono ai ke kahe ʻana a me ke kahe ʻole ʻole no ka hana maikaʻi loa.
Hoʻohui hou, ʻo ka spiral welded carbon steel paipu ke kūpaʻa loa i ka corrosion, no laila kūpono ia no ka hoʻonohonoho ʻana i lalo o ka lepo kahi e hiki ai i ka ʻike ʻana i ka makū a me nā mea lepo ke hoʻololi i ka pono o ka paipu. ʻO kāna hana paʻa a me nā mea paʻa i kūpono no ka hoʻohana lōʻihi i nā kūlana kaiapuni paʻakikī.
ʻO ka hoʻohanaʻana i ke kila kalapona kiʻekiʻe e hōʻoia i nā paipu i nā mea mechanical maikaʻi loa, me ka ikaika tensile kiʻekiʻe a me ka hopena o ka hopena. Hana kēia i kahi koho hilinaʻi nopaipu kinoea ma lalo o ka honuanā mea hoʻonoho, no ka mea, pili paha nā paipu i nā ukana o waho a me nā pōʻino.
I ka hōʻuluʻulu ʻana, ʻo nā paipu kila kalapona i hoʻopaʻa ʻia ʻo spiral ka mea maikaʻi loa no nā noi paipu kinoea kūlohelohe. ʻO kāna kaʻina hana hou e hiki ai ke hana i nā paipu kila nui ke anawaena mai nā ʻāpana kila, e hōʻoia i ka maikaʻi a me ka lōʻihi. Hoʻokō ka paipu i nā koi o ka maʻamau EN10219 a loaʻa iā ia ke kūpaʻa corrosion maikaʻi loa, ʻoluʻolu o loko a me nā waiwai mechanical ikaika, kūpono ia no ka hoʻohana hilinaʻi lōʻihi i ka hoʻokomo ʻana i nā pipeline kūlohelohe.
