I-JIS G 3452iyindinganiso yaseJapane ecacisa ipayipi lensimbi elishiselwe ukuthutha isitimu, amanzi, uwoyela, igesi, umoya, njll. ngezingcindezi zokusebenza eziphansi uma kuqhathaniswa.I-JIS G 3452 iqukethe ibanga elilodwa kuphela, i-SGP, engenziwa nge-resistance welding (RW) noma i-butt welding.
Amapayipi ensimbi e-JIS G 3452 azokwenziwa kusetshenziswa inhlanganisela efanelekile yezindlela zokukhiqiza amapayipi nezindlela zokuqeda.
| Uphawu yebanga | Uphawu lwenqubo yokukhiqiza | Ukuhlukaniswa kwe-zinc-coating | |
| Inqubo yokukhiqiza amapayipi | Indlela yokuqeda | ||
| I-SGP | Ukumelana nogesi okushiselwe: E I-Butt eshiselwe: B | Ukuqedwa okushisayo: H Ukuqedwa okubandayo: C Njengoba ukumelana kukagesi kushiselwe: G | Amapayipi amnyama: amapayipi anganikezwanga i-zinc-coating Amapayipi amhlophe: amapayipi anikezwe i-zinc-coating |
Amapayipi ngokuvamile azolethwa njengoba ekhiqiziwe.Amapayipi aqedwe ngokubanda azokhishwa ngemuva kokukhiqizwa.
Uma ipayipi lenziwa yi-ERW, amashisela angaphakathi nangaphandle kwepayipi azosuswa ukuze kutholwe i-weld ebushelelezi eduze kwe-contour yepayipi.
Uma kunqunyelwe ngenxa yobubanzi bepayipi noma okokusebenza, njll., i-weld endaweni engaphakathi ingase ingasuswa.
Ukulungiselela: Ngaphambi kokwenza i-hot-dip galvanizing, ingaphezulu lepayipi lensimbi kufanele lihlanzwe kahle nge-sandblasting, pickling, njll.
Ubukhulu: Ngokuhlanganisa i-zinc, ingot ye-zinc ehlutshiwe ye-Class 1 ecaciswe ku-JIS H 2107 noma i-zinc enekhwalithi okungenani elingana nalokhu izosetshenziswa.
Okunye: Ezinye izimfuneko ezijwayelekile zokugalela izinsimbi zihambisana ne-JIS H 8641.
Ukuhlolwa: Ukulinganisa ukufana kokunamathela kukathayela ngokwe-JIS H 0401 Isigaba sesi-6.
Ngaphezu kwezakhi ezinikeziwe, ezinye izakhi ze-alloying zingangezwa njengoba kudingeka.
| Uphawu lwebanga | I-P (Phosphorus) | S (Sulfur) |
| I-SGP | ubuningi 0.040% | ubuningi 0.040% |
I-JIS G 3452 inemikhawulo embalwa ekwakhiweni kwamakhemikhali ngoba i-JIS G 3452 isetshenziselwa ikakhulukazi izinhlelo zokusebenza ezijwayelekile ezifana nokuthuthwa kwesitimu, amanzi, uwoyela, negesi yemvelo.Ukwakhiwa kwamakhemikhali wezinto ezibonakalayo akuyona into ebaluleke kakhulu, kodwa kunalokho izakhiwo zemishini yepayipi ukumelana nokucindezela kokusebenza.
I-Tensile Properties
| Uphawu lwebanga | Amandla aqinile | Ubude, iminithi, % | ||||||
| Isiqephu sokuhlola | Hlola isiqondiso | Ubukhulu bodonga, mm | ||||||
| N/mm² (MPA) | ＞3 ≤ 4 | ＞4 ≤ 5 | ＞5 ≤ 6 | ＞6 ≤7 | ＞7 | |||
| I-SGP | 290 imiz | No.11 | Ngokuhambisana ne-axis yepayipi | 30 | 30 | 30 | 30 | 30 |
| No.12 | Ngokuhambisana ne-axis yepayipi | 24 | 26 | 27 | 28 | 30 | ||
| No.5 | I-Perpendicular to pipe axis | 19 | 20 | 22 | 24 | 25 | ||
Emapayipini anobubanzi obungu-32A noma ngaphansi, amanani obude kuleli thebula awasebenzi, nakuba imiphumela yawo yokuhlolwa yobude izorekhodwa.Kulesi simo, imfuneko yobude okuvunyelenwe ngayo phakathi komthengi nomkhiqizi ingasetshenziswa.
Impahla Ephansi
Ububanzi: Kumashubhu anobubanzi obuncane obungaphezu kuka-50A (2B).
Ayikho imifantu lapho ithubhu lenziwe isicaba libe ngu-2/3 wobubanzi obungaphandle beshubhu.
Ukugoba
Ububanzi: Kumashubhu ensimbi anobubanzi obungajwayelekile ≤ 50A (2B).
Gobisa isifanekiso sibe ngu-90° ngeradiyasi yangaphakathi ephindwe kasithupha ububanzi bepayipi ngaphandle kokukhiqiza noma yikuphi ukuqhekeka.
Ipayipi ngalinye lensimbi kufanele libe nokuhlolwa kwengcindezi ye-hydrostatic noma ukuhlolwa okungabhubhisi.
Ukuhlolwa kwe-Hydrostatic
Ingcindezi: 2.5 MPa;
Isikhathi: Bamba okungenani imizuzwana emi-5;
Ukwahlulela: ipayipi lensimbi ngaphansi kwengcindezi ngaphandle kokuvuza.
Ukuhlolwa Okungonakali
Ukuhlolwa kwe-ultrasonic okucaciswe ku-JIS G 0582 kuzosebenza.Izinga lokuhlola lingase libe nzima kakhulu kuneSigaba se-UE.
Ukuhlolwa kwamanje kwe-eddy okucaciswe ku-JIS G 0583 kuzosebenza.Izinga lokuhlola lingase libe nzima kakhulu kuneSigaba EZ.
Kumapayipi anamadamitha okuzisholo ≥ 350A (14B), bala ububanzi ngokulinganisa umjikelezo, lapho ukubekezelelana kungu-± 0.5%.
Uhlobo lwesiphetho sepayipi le-DN≤300A/12B: intambo noma isiphetho esiyisicaba.
Uhlobo lokuphela kwepayipi le-DN≤350A/14B: isiphetho esiyisicaba.
Uma umthengi edinga ukuphela kwe-beveled, i-engeli ye-bevel ingu-30-35 °, ububanzi be-bevel bonqenqema lwepayipi lensimbi: max 2.4mm.
I-JIS G 3452 inokulingana kuI-ASTM A53futhiI-GB/T 3091, futhi izinto zamapayipi ezichazwe kulawa mazinga zingabhekwa njengezilingana nomunye nomunye ngokusebenza nokusebenza.
Kusukela yasungulwa ngo-2014, i-Botop Steel isiphenduke umhlinzeki oholayo wepayipi lensimbi eNyakatho neChina, elaziwa ngomsebenzi omuhle kakhulu, imikhiqizo yekhwalithi ephezulu, nezisombululo ezibanzi.
Le nkampani inikeza izinhlobonhlobo zamapayipi ensimbi ye-carbon nemikhiqizo ehlobene, okuhlanganisa ipayipi lensimbi engenamthungo, i-ERW, i-LSAW, ne-SSAW, kanye nohlu oluphelele lokufakwa kwamapayipi nama-flange.Imikhiqizo yayo ekhethekile ihlanganisa ama-alloys asezingeni eliphezulu kanye nezinsimbi ezingenasici ze-austenitic, ezenzelwe ukuhlangabezana nezidingo zamaphrojekthi ahlukahlukene wamapayipi.
Xhumana nathi, ithimba lochwepheshe likulungele ukukunikeza izinsizakalo ezisezingeni eliphezulu nezisombululo, libheke phambili ekufinyeleleni ukubambisana okujabulisayo nawe, futhi ngokuhlanganyela livule isahluko esisha sempumelelo.
