I-JIS G 3444: Iityhubhu zentsimbi yeCarbon yesakhiwo esiqhelekileyo.
Icacisa iimfuno zemibhobho yentsimbi yekhabhoni esetyenziswa kubunjineli boluntu kunye nolwakhiwo, njengeenqaba zentsimbi, isikafula, iimfumba zesiseko, iimfumba zesiseko, kunye neemfumba ezichasene nokutyibilika.
I-STK 400umbhobho wentsimbi lelinye lawona mabanga axhaphakileyo, aneempawu zoomatshini aamandla amancinci angama-400 MPakunye aamandla esivuno esincinci angama-235 MPa. Ukomelela kwayo okuhle kunye nokuqinayenze ilungele izicelo ezininzi ezahlukeneyo.
Ngokobuncinci bamandla obunzima bombhobho wentsimbi wohlulwe kwiiklasi ezi-5, ezi:
I-STK 290, STK 400, STK 490, STK 500, STK 540.
Injongo ngokubanzi Idayimitha yangaphandle: 21.7-1016.0mm;
Iimfumba zesiseko kunye neemfumba zokucutha ukudilika komhlaba OD: ngaphantsi kwe-318.5mm.
| Uphawu lwebakala | Uphawu lwenkqubo yokuvelisa | |
| Inkqubo yokwenziwa kwemibhobho | Indlela yokugqiba | |
| STK 290 | Ngaphandle komthungo: S Ukuxhathisa kombane okudityanisiweyo: E Impundu idityanisiwe: B Iarc ezenzekelayo edityanisiweyo: A | Igqityiwe ngokushushu: H Kubanda kugqityiwe: C Njengoko ukuxhathisa kombane kufakwe iwelded: G |
| I-STK 400 | ||
| STK 490 | ||
| I-STK 500 | ||
| I-STK 540 | ||
Iibhubhu ziyakwenziwa ngokudibanisa indlela yokuvelisa i-tube kunye nendlela yokugqiba ebonakalisiweyo.
Ngokukodwa, zinokuhlelwa ngokwezi ntlobo ezisixhenxe zilandelayo, ke khetha uhlobo olufanelekileyo ngokweemfuno ezahlukeneyo:
I-1) I-tube yensimbi engenamthungo eshushu egqityiweyo: -SH
2) I-tube yensimbi engenamthungo ebandayo egqityiweyo: -SC
3) Njengokumelana nombane ityhubhu yentsimbi edityanisiweyo: -EG
4) Ukutshatyalaliswa kombane okutshisayo okugqityiweyo ityhubhu yentsimbi edibeneyo: -EH
5) Ukumelana nombane ogqityiweyo ogqityiweyo we-welded steel tube: -EC
6) Imibhobho yentsimbi ene-butt-welded: -B
I-7) Iityhubhu zentsimbi ezizenzekelayo ze-arc: -A
| Ukuqulunqwa kwemichizaa% | |||||
| Uphawu lwebakala | C (iKhabhoni) | Si (Silicon) | Mn (Manganese) | P (Phosphorus) | S (Sulfur) |
| max | max | max | max | ||
| I-STK 400 | 0.25 | - | - | 0.040 | 0.040 |
| aIziqalelo zengxubevange ezingaqukwanga kule theyibhile kunye nezinto eziboniswe ngo-“—” zinokudityaniswa ngokuyimfuneko. | |||||
I-STK 400yintsimbi yekhabhoni ephantsi enokuweldability elungileyo kunye nokusetyenzwa kwezicelo zesakhiwo ezifuna ukuwelda.I-Phosphorus kunye ne-sulfure zilawulwa kumanqanaba aphantsi ukunceda ukugcina ukuqina kunye nokusebenza kwezinto eziphathekayo.Nangona ixabiso elithile le-silicon kunye ne-manganese linganikezelwanga, linokuthi lihlengahlengiswe ngaphakathi kwimida evumelekileyo ukuze kulungiswe iipropati zentsimbi ngakumbi.
Amandla e-Tensile kunye neNqanaba lokuZivuza okanye ubungqina boxinzelelo
Amandla okuqina e-weld asebenza kwi-arc welded tubes ngokuzenzekelayo.Yinkqubo ye-welding ye-SAW.
| Uphawu lwebakala | Tensile strength | Inqaku lesivuno okanye uxinzelelo lobungqina | Amandla okuqina kwi-weld |
| N/mm² (MPA) | N/mm² (MPA) | N/mm² (MPA) | |
| imiz | imiz | imiz | |
| I-STK 400 | 400 | 235 | 400 |
Ukwandiswa kwe-JIS G 3444
Ukwandiswa okuhambelana nendlela yokuvelisa ityhubhu kuboniswe kwiThebhile 4.
Nangona kunjalo, xa uvavanyo lwe-tensile lwenziwa kwi-Test Piece No.
Kwiqondo lobushushu begumbi (5 °C ukuya ku-35 °C), beka i-specimen phakathi kweeplati ezimbini ezisicaba kwaye ucinezele ngokuqinileyo ukuze uzibethe kude kube ngumgama H ≤ 2/3D phakathi kwamacwecwe, emva koko ukhangele iintanda kwi-specimen.
Kwiqondo lobushushu begumbi (5 °C ukuya kwi-35 °C), goba umboniso ujikeleze isilinda kwi-engile yokugoba ubuncinci be-90 ° kunye nerediyasi ephezulu yangaphakathi engekho ngaphezulu kwe-6D kwaye ujonge umboniso wokuqhekeka.
Uvavanyo lwe-Hydrostatic, iimvavanyo ezingonakalisi ze-welds, okanye ezinye iimvavanyo ziya kuvunyelwana kwangaphambili kwiimfuno ezifanelekileyo.
Unyamezelo lweDiameter yangaphandle
Unyamezelo lokutyeba kodonga
Ukunyamezela Ubude
Ubude ≥ ubude obuxeliweyo
Ubuso bangaphakathi nangaphandle bombhobho wensimbi buya kuba bushelelezi kwaye bukhululekile kwiziphene ezingathandekiyo ekusebenziseni.
Umbhobho ngamnye wentsimbi uya kubhalwa ngolu lwazi lulandelayo.
a)Uphawu lwebakala.
b)Uphawu lwendlela yokuvelisa.
c)Imilinganiselo.Idayamitha yangaphandle kunye nobukhulu bodonga buya kuphawulwa.
d)Igama lomenzi okanye isifinyezo.
Xa ukumakishwa kwityhubhu kunzima ngenxa yokuba i-diameter yayo yangaphandle incinci okanye xa kucelwe njalo ngumthengi, ukumakishwa kunokunikwa kwi-bundle nganye yeetyhubhu ngendlela efanelekileyo.
Iingubo ezichasene ne-corrosion ezifana ne-zinc-rich rich, i-epoxy coatings, iipeyinti zepeyinti, njl njl.
I-STK 400 inika ulungelelwaniso olufanelekileyo lwamandla kunye noqoqosho, iyenza ilungele iiprojekthi ezininzi zobunjineli kunye nezokwakha.
I-STK 400 iibhubhu zetsimbi zisetyenziswa ngokuqhelekileyo kwishishini lokwakha kwaye zifaneleke ngokukodwa ukusetyenziswa njengezinto zesakhiwo ezifana neentsika, iiplanga, okanye izakhelo kwizakhiwo zorhwebo kunye neendawo zokuhlala.
Ikwafanelekile kwiibhulorho, izakhiwo zenkxaso, kunye nezinye iiprojekthi ezifuna amandla aphakathi kunye nokuqina.
Isenokusetyenziselwa ukwakha iintsimbi zokugada ezindleleni, izakhelo zemiqondiso yendlela, kunye nezinye izixhobo zoluntu.
Kwimveliso, i-STK 400 ingasetyenziselwa ukuvelisa iifreyimu kunye nezakhiwo zenkxaso kumatshini kunye nezixhobo ngenxa yomthamo wayo omhle wokuthwala kunye nokusebenza.
Nceda uqaphele ukuba ngelixa le migangatho ifana kwisicelo kunye nokusebenza, kunokubakho umahluko omncinci kwimichiza ethile kunye neeparitha ezithile zepropathi yomatshini.
Xa kufakwa izinto eziphathekayo, iimfuno ezithile zemigangatho kufuneka zithelekiswe ngokucacileyo ukuze kuqinisekiswe ukuba izinto ezikhethiweyo ziya kuhlangabezana nemigangatho ethile yobugcisa kunye nokhuseleko lweprojekthi.
Ukususela ekusekweni kwayo kwi-2014, i-Botop Steel iye yaba ngumthengisi ohamba phambili we-carbon steel pipe eNyakatho ye-China, eyaziwa ngenkonzo egqwesileyo, iimveliso eziphezulu, kunye nezisombululo ezibanzi.
Inkampani inikezela ngeendidi zemibhobho ye-carbon steel kunye nemveliso ehambelana nayo, kubandakanywa i-seamless, i-ERW, i-LSAW, kunye ne-SSAW ipayipi yensimbi, kunye nomgca opheleleyo wokufakelwa kwemibhobho kunye neeflange.
Iimveliso zayo ezikhethekileyo zikwabandakanya i-alloys ephezulu kunye ne-austenitic stainless steels, elungiselelwe ukuhlangabezana neemfuno zeeprojekthi ezahlukeneyo zepayipi.
