JIS G 3452He kūlana Iapana e wehewehe ana i ka paipu kila kalapona welded no ka lawe ʻana i ka mahu, ka wai, ka aila, ke kinoea, ka ea, a me nā mea ʻē aʻe ma nā puʻe hana haʻahaʻa.Aia ka JIS G 3452 i hoʻokahi wale nō papa, SGP, hiki ke hana ʻia e ka wili kuʻi kūʻē (ERW) a i ʻole ka wili kī.
E hana ʻia nā paipu kila JIS G 3452 me ka hoʻohana ʻana i kahi hui kūpono o nā ʻano hana paipu a me nā ʻano hoʻopau.
| hōʻailona o ka papa | Hōʻailona o ka hana hana | Hoʻokaʻawale i ka zinc-coating | |
| Kaʻina hana paipu | ʻano hoʻopau | ||
| SGP | Uila pale pale wili: E Kuʻi ʻia ʻo Butt: B | Hoʻopau wela: H Hoʻopau anu: C E like me ka hili ʻia ʻana o ke kūpale uila: G | ʻO nā paipu ʻeleʻele: ʻaʻole hāʻawi ʻia nā paipu zinc-coating ʻO nā paipu keʻokeʻo: nā paipu i hāʻawi ʻia i ka zinc-coating |
Hāʻawi mau ʻia nā paipu e like me ka mea i hana ʻia.E hoʻopili ʻia nā paipu anuanu ma hope o ka hana ʻana.
Inā hana ʻia ka paipu e ERW, e hoʻoneʻe ʻia nā wili ma loko a ma waho o ka ʻili o ka paipu i mea e loaʻa ai kahi wili maʻemaʻe ma ka ʻaoʻao o ka paipu.
Inā kaupalena ʻia ma muli o ke anawaena paipu a me nā mea hana, a me nā mea ʻē aʻe, ʻaʻole hiki ke wehe ʻia ka weld ma ka ʻili o loko.
Prep: Ma mua o ka hoʻoulu ʻana i ka wela, pono e hoʻomaʻemaʻe ʻia ka ʻili o ka paipu kila e ka sandblasting, pickling, etc.
Mānoanoa: No ka zinc-coating, e hoʻohana ʻia ka zinc ingot Class 1 i kuhikuhi ʻia ma JIS H 2107 a i ʻole zinc me ka liʻiliʻi o ka maikaʻi like me kēia.
Nā mea ʻē aʻe: ʻO nā koi maʻamau ʻē aʻe no ka galvanizing e like me JIS H 8641.
Ho'āʻo: ʻO ke ana o ka like ʻole o ka uhi galvanized e like me JIS H 0401 Paukū 6.
Ma waho aʻe o nā mea i hāʻawiʻia, hiki ke hoʻohuiʻia nā mea hoʻohui'ē aʻe e like me ka mea e pono ai.
| Hōʻailona o ka papa | P (Pōpika) | S (Sulphur) |
| SGP | ʻoi loa 0.040 % | ʻoi loa 0.040 % |
He liʻiliʻi ka palena o JIS G 3452 no ka mea hoʻohana nui ʻia ʻo JIS G 3452 no nā noi kumu nui e like me ka lawe ʻana i ka mahu, ka wai, ka ʻaila, a me ke kinoea maoli.ʻAʻole ʻo ka ʻano kemika o ka mea i mea nui loa, akā ʻo nā ʻano mechanical o ka paipu e kū i ke kaomi hana.
Na Waiwai Tensile
| Hōʻailona o ka papa | Ka ikaika tensile | Elongation, min, % | ||||||
| ʻāpana hoʻāʻo | Hoao kuhikuhi | Ka mānoanoa o ka pā, mm | ||||||
| N/mm² (MPA) | ＞3 ≤ 4 | ＞4 ≤ 5 | ＞5 ≤ 6 | ＞6 ≤ 7 | ＞7 | |||
| SGP | 290 min | No.11 | Kūlike me ke koʻi paipu | 30 | 30 | 30 | 30 | 30 |
| No.12 | Kūlike me ke koʻi paipu | 24 | 26 | 27 | 28 | 30 | ||
| No.5 | Perpendicular to pipe axis | 19 | 20 | 22 | 24 | 25 | ||
No nā paipu o ke anawaena inoa 32A a i ʻole ma lalo, ʻaʻole pili nā waiwai elongation ma kēia papa, ʻoiai e hoʻopaʻa ʻia nā hopena hoʻāʻo elongation.I kēia hihia, hiki ke hoʻohana ʻia ke koi elongation i ʻae ʻia ma waena o ka mea kūʻai aku a me ka mea hana.
Waiwai Palahalaha
Ka laulā: No nā paipu me ke anawaena inoa i ʻoi aku ma mua o 50A (2B).
ʻAʻohe māwae ke hoʻopalapala ʻia ka paipu i 2/3 o ke anawaena o waho o ka paipu.
ʻO ke kūpale ʻana
Ka laulā: No nā paipu kila me ke anawaena inoa ≤ 50A (2B).
E hoʻopōloli i ka mea hoʻohālike i 90° me ka radius o loko o ʻeono manawa o ke anawaena o waho o ka paipu me ka ʻole o nā māwae.
Pono e loaʻa i kēlā me kēia paipu kila kahi hoʻokolohua hydrostatic pressure a i ʻole kahi hoʻāʻo non-destructive.
Hoʻāʻo Hydrostatic
Pumi: 2.5 MPa;
Manawa: E paʻa no 5 mau kekona;
Hoʻoholo: paipu kila ma lalo o ke kaomi me ka leakage.
Ho'āʻo hoʻopōʻino ʻole
E pili ka hoʻokolohua ultrasonic i kuhikuhi ʻia ma JIS G 0582.ʻOi aku ka paʻakikī o ka pae hoʻāʻo ma mua o ka Category UE.
E hoʻohana ʻia ka hoʻokolohua eddy o kēia manawa i kuhikuhi ʻia ma JIS G 0583.ʻOi aku ka paʻakikī o ka pae hoʻāʻo ma mua o ka Category EZ.
No nā paipu me nā anawaena inoa ≥ 350A (14B), e helu i ke anawaena ma ke ana ana i ke anapuni, a ma ia hihia, he ± 0.5%.
Ke ʻano o ka hopena o ka paipu no DN≤300A/12B: wili a i ʻole ka hopena palahalaha.
Keʻano o ka hopena paipu no DN≤350A/14B: ka hopena palahalaha.
Inā makemake ka mea kūʻai aku i ka hopena beveled, ʻo ka huina o ka bevel he 30-35 °, ka laulā bevel o ka lihi paipu kila: max 2.4mm.
Loaʻa iā JIS G 3452 nā mea like maASTM A53aGB/T 3091, a ʻo nā mea paipu i kuhikuhi ʻia i kēia mau kūlana hiki ke noʻonoʻo ʻia e like me kekahi i kekahi ma ke ʻano o ka hana a me ka noi.
Mai kona hoʻokumu ʻana i ka makahiki 2014, ua lilo ʻo Botop Steel i mea hoʻolako alakaʻi i ka paipu kila carbon ma Northern China, i ʻike ʻia no ka lawelawe maikaʻi loa, nā huahana kiʻekiʻe, a me nā hoʻonā piha.
Hāʻawi ka hui i nā ʻano paipu kila kalapona a me nā huahana pili, me ka seamless, ERW, LSAW, a me ka paipu kila SSAW, a me ka laina piha o nā paipu paipu a me nā flanges.ʻO kāna mau huahana kūikawā pū kekahi me nā mea kila kiʻekiʻe a me nā austenitic stainless steel, i hana ʻia e hoʻokō i nā koi o nā papahana pipeline like ʻole.
Kāhea iā mā˚ou, ua mākaukau ka hui ʻoihana e hāʻawi iā ʻoe i nā lawelawe a me nā hoʻonā maikaʻi, e kakali ana i ka launa pū ʻana me ʻoe, a me ka wehe pū ʻana i kahi mokuna hou o ka kūleʻa.
