I-JIS G 3452iyindinganiso yaseJapan echaza ipayipi lensimbi yekhabhoni elihlanganisiwe lokuthuthwa komusi, amanzi, uwoyela, igesi, umoya, njll. ngengcindezi yokusebenza ephansi. I-JIS G 3452 iqukethe ibanga elilodwa kuphela, i-SGP, elingenziwa ngokushisela kokumelana (ERW) noma ngokushisela kwe-butt.
I-JIS G 3452 Amapayipi ensimbi kumele akhiwe kusetshenziswa inhlanganisela efanele yezindlela zokukhiqiza amapayipi kanye nezindlela zokuqeda.
| Uphawu yebanga | Uphawu lwenqubo yokukhiqiza | Ukuhlukaniswa kwe-zinc-coating | |
| Inqubo yokukhiqiza amapayipi | Indlela yokuqeda | ||
| I-SGP | Ukumelana kukagesi okuhlanganisiwe: E I-Butt ehlanganisiwe: B | Okuqediwe ngokushisa: H Kuqediwe ngokubandayo: C Njengoba ukumelana kukagesi kuhlanganisiwe: G | Amapayipi amnyama: amapayipi angafakwanga i-zinc-coating Amapayipi amhlophe: amapayipi afakwe i-zinc-coating |
Amapayipi ngokuvamile kufanele alethwe njengoba ekhiqizwe. Amapayipi aqediwe ngokubandayo kufanele afakwe emanzini ngemva kokukhiqizwa.
Uma ipayipi lenziwe yi-ERW, ama-weld angaphakathi nangaphandle kwepayipi kufanele asuswe ukuze kutholakale i-weld ebushelelezi eceleni kwepayipi.
Uma kunqunyelwe ngenxa yobubanzi bepayipi noma imishini, njll., ukushintshwa kobuso obungaphakathi kungenzeka kungasuswa.
Ukulungiselela: Ngaphambi kokufaka i-hot-dip galvanizing, ubuso bepayipi lensimbi kumele buhlanzwe kahle ngokuqhumisa isihlabathi, ukugawula, njll.
Ubukhulu: Ukuze kufakwe i-zinc-coating, i-zinc ingot ehlutshiwe yekilasi 1 echazwe ku-JIS H 2107 noma i-zinc enekhwalithi elingana nalokhu okungenani kufanele isetshenziswe.
Okunye: Ezinye izidingo ezijwayelekile zokufaka i-galvanizing zihambisana ne-JIS H 8641.
Ukuhlolwa: Ukulinganiswa kokufana kwesembozo se-galvanized ngokusho kwe-JIS H 0401 Isigaba 6.
Ngaphezu kwezinto ezinikeziwe, ezinye izinto zokuhlanganisa zingangezwa njengoba kudingeka.
| Uphawu lwebanga | I-P (i-Phosphorus) | S (Isibabule) |
| I-SGP | ubuningi obungu-0.040% | ubuningi obungu-0.040% |
I-JIS G 3452 inemikhawulo embalwa ekwakhiweni kwamakhemikhali ngoba i-JIS G 3452 isetshenziswa kakhulu ezinhlosweni ezijwayelekile njengokuthuthwa komusi, amanzi, uwoyela, kanye negesi yemvelo. Ukwakheka kwamakhemikhali kwezinto akuyona into ebaluleke kakhulu, kodwa kunalokho yizakhiwo zemishini zepayipi ukuze zikwazi ukumelana nengcindezi yokusebenza.
Izakhiwo Zokunamathela
| Uphawu lwebanga | Amandla okudonsa | Ukwelulwa, ubuncane, % | ||||||
| Ingxenye yokuhlola | Ukuhlolwa isiqondiso | Ubukhulu bodonga, mm | ||||||
| I-N/mm² (i-MPA) | ＞3 ≤ 4 | ＞4 ≤ 5 | ＞5 ≤ 6 | ＞6 ≤ 7 | ＞7 | |||
| I-SGP | Amaminithi angu-290 | Inombolo 11 | Kuhambisana ne-axis yepayipi | 30 | 30 | 30 | 30 | 30 |
| Inombolo 12 | Kuhambisana ne-axis yepayipi | 24 | 26 | 27 | 28 | 30 | ||
| Inombolo 5 | Iqonde ngqo ku-axis yepayipi | 19 | 20 | 22 | 24 | 25 | ||
Kumapayipi anobubanzi obungu-32A noma ngaphansi, amanani okunwebeka akuleli thebula awasebenzi, yize imiphumela yawo yokuhlola ukunwebeka kufanele iqoshwe. Kulesi simo, imfuneko yokunwebeka okuvunyelwene ngayo phakathi komthengi nomenzi ingasetshenziswa.
Impahla Ethambile
Ububanzi: Kwamashubhu anobubanzi obujwayelekile obungaphezu kuka-50A (2B).
Akukho mifantu uma ithubhu lisicaba libe yi-2/3 yobubanzi bangaphandle bethubhu.
Ukugoba
Ububanzi: Kwamashubhu ensimbi anobubanzi obujwayelekile ≤ 50A (2B).
Goba isampula ibe ngu-90° ngerediyasi yangaphakathi ephindwe kasithupha kunobubanzi bangaphandle bepayipi ngaphandle kokudala imifantu.
Ipayipi ngalinye lensimbi kufanele libe nokuhlolwa kokucindezela kwe-hydrostatic noma ukuhlolwa okungabhubhisi.
Ukuhlolwa Kwamanzi
Ingcindezi: 2.5 MPa;
Isikhathi: Bamba okungenani imizuzwana emi-5;
Isahlulelo: ipayipi lensimbi ngaphansi kwengcindezi ngaphandle kokuvuza.
Ukuhlolwa Okungabhubhisi
Ukuhlolwa kwe-ultrasonic okuchazwe ku-JIS G 0582 kuzosebenza. Izinga lokuhlola lingase libe libi kakhulu kune-Category UE.
Ukuhlolwa kwe-eddy current okuchazwe ku-JIS G 0583 kuzosebenza. Izinga lokuhlolwa lingase libe libi kakhulu kune-Category EZ.
Kumapayipi anobubanzi obujwayelekile ≥ 350A (14B), bala ububanzi ngokulinganisa umjikelezo, lapho ukubekezelelana kungu-± 0.5%.
Uhlobo lwesiphetho sepayipi se-DN≤300A/12B: isiphetho esinomucu noma esiyisicaba.
Uhlobo lokuphela kwepayipi le-DN≤350A/14B: ukuphela okuyisicaba.
Uma umthengi edinga ukuphela okugobile, i-engeli ye-bevel ingu-30-35°, ububanzi be-bevel bomphetho wepayipi lensimbi: ubuningi obungu-2.4mm.
I-JIS G 3452 inezilinganiso ezifanayo kuI-ASTM A53futhiI-GB/T 3091, futhi izinto zamapayipi ezichazwe kulezi zindinganiso zingabhekwa njengezilingana ngokusebenza kanye nokusetshenziswa.
Kusukela yasungulwa ngo-2014, iBotop Steel isibe ngumhlinzeki ohamba phambili wamapayipi ensimbi yekhabhoni eNyakatho yeShayina, eyaziwa ngenkonzo enhle kakhulu, imikhiqizo esezingeni eliphezulu, kanye nezixazululo eziphelele.
Le nkampani inikeza amapayipi ahlukahlukene ensimbi yekhabhoni kanye nemikhiqizo ehlobene nayo, kufaka phakathi ipayipi lensimbi elingenamthungo, i-ERW, i-LSAW, kanye ne-SSAW, kanye nohlu oluphelele lwezihlanganisi zamapayipi nama-flange. Imikhiqizo yayo ekhethekile ifaka phakathi ama-alloy ebanga eliphezulu kanye nezinsimbi ezingagqwali ze-austenitic, ezenzelwe ukuhlangabezana nezidingo zamaphrojekthi ahlukahlukene amapayipi.
Xhumana nathi, ithimba lochwepheshe likulungele ukukunikeza izinsizakalo nezixazululo ezisezingeni eliphezulu, libheke phambili ekubambisaneni nawe ngendlela ejabulisayo, kanye nokuvula isahluko esisha sempumelelo ngokubambisana.
