Isaphulelo kwihoseyile yaseChina yeCarbon Steel ingenamthungo yombhobho weNace API 5L X52 X60 X65 X70 Psl2 Umbhobho weOyile weGesi
Isishwankathelo
Ngomoya wethuingqibelelo ulawulo,intsebenziswano phakathi, iinzuzo kunye nokuqhubela phambili, siya kwakha ikamva elinempumelelo kunye nombutho wakho obekekileyo kwi-Discount wholesale China Carbon Steel Seamless Pipe Nace API 5L X52 X60 X65 X70 Psl2 Umbhobho weOyile weGas, Iqumrhu lethu lizinikele ekuboneleleni abathengi ngezinto eziphezulu kunye neziphezulu. iimveliso ezikumgangatho ophezulu ezizinzileyo ngethegi yexabiso ndlongondlongo, isenza malunga nomthengi ngamnye onwabe ngeenkonzo zethu kunye neemveliso. Ngoku sineqela lokuthengisa elizinikeleyo nelinobundlobongela, kunye namasebe amaninzi, abonelela abathengi bethu abaphambili. Besijonge ubuhlakani beshishini bexesha elide, kwaye siqinisekisa ababoneleli bethu ukuba ngokuqinisekileyo baya kuxhamla kwixesha elifutshane kunye nexesha elide.
Ezinye i-enviroment esebenza nzima ifuna isakhono sokulwa ne-asidi (Kufuneka ngokubanzi ukuba umbhobho unokumelana nomhlwa we-asidi xa uxinzelelo lwe-hydrogen sulfide lufikelela kwi-300Pa). Kulo mmandla, kukho imfuneko ekhethekileyo kumxholo wekhabhoni, umxholo wesulfure, umxholo we-phosphorus kunye nokufumanisa impazamo, ifuna i-HIC (ihydrogen enziwe ukuqhekeka) kunye ne-SSC (i-Sulfid stress cracking).
Uvavanyo lwe-HIC: I-specimen, i-100 +/-1mm ubude kunye ne-20 +/-1mm ububanzi, ifakwe kwizisombululo ezimbini zovavanyo oluqhelekileyo: Isisombululo A (i-sodium chloride kunye ne-acetic acid isisombululo esigcwele i-hydrogen sulfide kwiqondo lokushisa kunye noxinzelelo) kunye nesisombululo B. (isisombululo samanzi olwandle enziwe nge-hydrogen sulphide kwiqondo lokushisa kunye noxinzelelo) kwiiyure ezingama-96. Kukho izalathi zovavanyo ezintathu: i-crack sensitivity ratio CSR≤2%, i-crack length ratio CLR≤15%, kunye ne-crack thickness ratio CTR≤5 %.
Uvavanyo lwe-SSC:
Iingongoma ezine indlela yokugoba ubungakanani besampulu 115mm * 15mm * 5mm
Kukho iindlela ezine zokwenza oku:
A: Uvavanyo oluqhelekileyo lwe-NACE: uxinzelelo oluphezulu olungaphumeleli kwiiyure ezingama-720
B: Uvavanyo oluqhelekileyo lokugoba lwe-NACE: uxinzelelo oluphezulu olungaphumeleli kwiiyure ezingama-720
C: Uvavanyo oluqhelekileyo lwe-NACE lwendandatho ye-C: uxinzelelo oluphezulu olungaphumeleli kwiiyure ezingama-720
D: Uvavanyo lwe-NACE oluqhelekileyo lwe-double cantilever beam (DSB): Umyinge we-KISSC (i-SSC threshold stress coefficient) yovavanyo oluphindaphindiweyo lovavanyo olusebenzayo
Isicelo
Umbhobho usetyenziselwa ukuthutha i-oyile, umphunga kunye namanzi atsalwa phantsi emhlabeni ukuya kushishino lwe-oyile negesi kushishino ngombhobho.
IBanga eliPhambili
IBakala API 5L line umbhobho intsimbi: Gr.B X42 X52 X60 X65 X70
ICandelo leMichiza
| IBanga leNsimbi (Igama lentsimbi) | Iqhekeza leMass, ngokuSekwe kubushushu kunye noHlalutya lweMvelisoa,g% | |||||||
| C | Mn | P | S | V | Nb | Ti | ||
| ubuninzi b | ubuninzi b | imiz | max | max | max | max | max | |
| Umbhobho ongenamthungo | ||||||||
| L175 okanye A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| I-L175P okanye i-A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 okanye A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 okanye B | 0.28 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 okanye X42 | 0.28 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 okanye X46 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 okanye X52 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 okanye X56 | 0.28 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 okanye X60 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L450 okanye X65 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L485 okanye X70 | 0.28 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| Umbhobho odityanisiweyo | ||||||||
| L175 okanye A25 | 0.21 | 0.60 | - | 0.030 | 0.030 | - | - | - |
| I-L175P okanye i-A25P | 0.21 | 0.60 | 0.045 | 0.080 | 0.030 | - | - | - |
| L210 okanye A | 0.22 | 0.90 | - | 0.030 | 0.030 | - | - | - |
| L245 okanye B | 0.26 | 1.20 | - | 0.030 | 0.030 | c,d | c,d | d |
| L290 okanye X42 | 0.26 | 1.30 | - | 0.030 | 0.030 | d | d | d |
| L320 okanye X46 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L360 okanye X52 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L390 okanye X56 | 0.26 | 1.40 | - | 0.030 | 0.030 | d | d | d |
| L415 okanye X60 | 0.26 e | 1.40 e | - | 0.030 | 0.030 | f | f | f |
| L450 okanye X65 | 0.26 e | 1.45 e | - | 0.030 | 0.030 | f | f | f |
| L485 okanye X70 | 0.26 e | 1.65 e | - | 0.030 | 0.030 | f | f | f |
| a Cu ≤ 0.50%; Ni ≤ 0.50 %; Cr ≤ 0.50 % kunye ne-Mo ≤ 0.15%. b Ngokunciphisa ngakunye kwe-0.01% ngaphantsi kwe-concentration ephezulu echaziweyo ye-carbon, ukunyuka kwe-0.05% ngaphezu kwe-concentration ephezulu echaziweyo kwi-Mn kuvumelekile, ukuya kuthi ga kwi-1.65 % kumabakala ≥ L245 okanye B, kodwa ≤ L360 okanye X52; ukuya kutsho kubuninzi be-1.75 % kumabakala > L360 okanye X52, kodwa <L485 okanye X70; ukuya kutsho kwi-2.00 % kwiBakala L485 okanye X70. c Ngaphandle kokuba kuvunyelwene ngenye indlela, Nb + V ≤ 0.06 %. d Nb + V + Ti ≤ 0.15%. e Ngaphandle kokuba kuvunyelwene ngenye indlela. f Ngaphandle kokuba kuvunyelwene ngenye indlela, Nb + V + Ti ≤ 0.15 %. g Akukho kongezwa ngamabom kwe-B kuvunyelwe kwaye intsalela ye-B ≤ 0.001%. | ||||||||
IPropati yoomatshini
| IBanga lombhobho | Umzimba wombhobho wePipe engenamthungo kunye neWelded | I-Weld Seam ye-EW, LW, SAW, kunye ne-COWUmbhobho | ||
| Unikeze Amandlaa Rt0.5 | Tensile strengtha Rm | Elongation(kwi-50 mm okanye 2 ngaphakathi.)Af | Tensile strengthb Rm | |
| MPa (psi) | MPa (psi) | % | MPa (psi) | |
| imiz | imiz | imiz | imiz | |
| L175 okanye A25 | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| I-L175P okanye i-A25P | 175 (25,400) | 310 (45,000) | c | 310 (45,000) |
| L210 okanye A | 210 (30,500) | 335 (48,600) | c | 335 (48,600) |
| L245 okanye B | 245 (35,500) | 415 (60,200) | c | 415 (60,200) |
| L290 okanye X42 | 290 (42,100) | 415 (60,200) | c | 415 (60,200) |
| L320 okanye X46 | 320 (46,400) | 435 (63,100) | c | 435 (63,100) |
| L360 okanye X52 | 360 (52,200) | 460 (66,700) | c | 460 (66,700) |
| L390 okanye X56 | 390 (56,600) | 490 (71,100) | c | 490 (71,100) |
| L415 okanye X60 | 415 (60,200) | 520 (75,400) | c | 520 (75,400) |
| L450 okanye X65 | 450 (65,300) | 535 (77,600) | c | 535 (77,600) |
| L485 okanye X70 | 485 (70,300) | 570 (82,700) | c | 570 (82,700) |
| a Kumabanga aphakathi, umahluko phakathi kobuncinane bamandla e tensile obuchaziweyo obuncinane obuchaziweyo bomzimba wombhobho uya kuba njengoko unikwe kwitheyibhile yebakala eliphezulu elilandelayo. iyakuba lixabiso elifanayo njengoko bekumisiwe kumzimba wombhobho kusetyenziswa umbhalo osemazantsi a).c Ubuncinane bobude obuchaziweyo,Af, echazwe ngepesenti yaze yasondezwa kweyona pesenti ikufutshane, iya kuba njengoko kumiselwe kusetyenziswa le nxaki ilandelayo: apho C yi 1940 kubalo usebenzisa iiyunithi SI kunye 625,000 ukubala usebenzisa iiyunithi USC; AI-xc yindawo yovavanyo lwe-tensile esebenzayo, echazwe ngeemilimitha ezisisikwere (i-intshi ezisikweri), ngolu hlobo lulandelayo: 1) kwisetyhula iziqwenga zovavanyo ezinqamlezayo, i-130 mm2 (0.20 in.2) ye-12.7 mm (0.500 in.) kunye ne-8.9 mm (0.350 in.) i-diameter test pieces; 65 mm2 (0.10 in.2) 6.4 mm (0.250 in.) amaqhekeza uvavanyo ububanzi; 2) kwiziqwenga zovavanyo olupheleleyo, i-a) 485 mm2 (0.75 in.2) kunye b) nommandla onqamlezileyo wesiqwenga sovavanyo, ethathwe kusetyenziswa ubungakanani obuchaziweyo bangaphandle kunye nobukhulu bodonga oluchaziweyo lombhobho, usondezwe kweyona 10 mm2 ikufutshane (0.01 in.2); 3) kwiziqwenga zovavanyo lwe-strip, encinci ye-a) 485 mm2 (0.75 in.2) kunye b) indawo enqamlezayo yesiqwenga sovavanyo, ethathwe kusetyenziswa ububanzi obuchaziweyo beqhekeza lovavanyo kunye nobukhulu bodonga oluchaziweyo lombhobho. , ijikelezwe kwi-10 mm2 ekufutshane (0.01 in.2); U Ngamandla okuqina achaziweyo asezantsi, abonakaliswe ngee-megapascals (iiponti nge-intshi nganye). | ||||
Ngaphandle kwedayimitha, ngaphandle kokungqukuva kunye nobukhulu bodonga
| Icaciswe Ngaphandle kweDiameter D (ngaphakathi) | Unyamezelo lweDayimitha, i-intshi d | Out-of-Roundness Ukunyamezelana kwi | ||||
| Umbhobho ngaphandle kwesiphelo a | Isiphelo sombhobho a,b,c | Umbhobho ngaphandle kokuphela a | Isiphelo sombhobho a,b,c | |||
| Umbhobho we-SMLS | Umbhobho odityanisiweyo | Umbhobho we-SMLS | Umbhobho odityanisiweyo | |||
| < 2.375 | -0,031 ukuba + 0.016 | – 0,031 ukuba + 0.016 | 0.048 | 0.036 | ||
| ≥2.375 ukuba 6.625 | 0.020D ye | 0.015D ye | ||||
| +/- 0.0075D | – 0,016 ukuba + 0.063 | D/t≤75 | D/t≤75 | |||
| Ngesivumelwano sokuba | Ngesivumelwano sokuba | |||||
| > 6.625 ukuba 24.000 | +/- 0.0075D | +/- 0.0075D, kodwa ubuninzi be-0.125 | +/- 0.005D, kodwa ubuninzi be-0.063 | 0.020D | 0.015D | |
| > 24 ukuya kuma-56 | +/- 0.01D | +/- 0.005D kodwa ubuninzi be-0.160 | +/- 0.079 | +/- 0.063 | 0.015D kodwa ubuninzi be-0.060 | 0.01D kodwa ubuninzi be-0.500 |
| Kuba | Kuba | |||||
| D/t≤75 | D/t≤75 | |||||
| Ngesivumelwano | Ngesivumelwano | |||||
| ngenxa | ngenxa | |||||
| D/t≤75 | D/t≤75 | |||||
| >56 | Njengoko kuvunyelwene | |||||
| a. Isiphelo sombhobho siquka ubude be-4 kwisitya ngasinye sombhobho | ||||||
| b. Kumbhobho we-SMLS unyamezelo lwesicelo se-t≤0.984in kwaye unyamezelo lombhobho oshinyeneyo luya kuba njengoko kuvunyelwene. | ||||||
| c. Ngombhobho owandisiweyo kunye ne-D≥8.625in kunye nombhobho ongandisiyo, ukunyamezela kwedayamitha kunye nokunyamezela ngaphandle kokujikeleza kunokumiselwa ngokusebenzisa i-diameter yangaphakathi ebalwayo okanye ukulinganisa ngaphakathi kwedayimitha kune-OD echaziweyo. | ||||||
| d. Ukumisela ukuthotyelwa kokunyamezela kwedayamitha, ububanzi bombhobho buchazwa njengesangqa sombhobho kuyo nayiphi na indiza ejikelezayo eyahlulwe nguPi. | ||||||
| Ubunzima bodonga | Ukunyamezela a |
| t intshi | intshi |
| Umbhobho we-SMLS b | |
| ≤ 0.157 | -1.2 |
| > 0.157 ukuba <0.948 | + 0.150t / – 0.125t |
| ≥ 0.984 | + 0.146 okanye + 0.1t, nokuba yeyiphi na enkulu |
| – 0.120 okanye – 0.1t, nokuba yeyiphi enkulu | |
| Umbhobho odityanisiweyo c,d | |
| ≤ 0.197 | +/- 0.020 |
| > 0.197 ukuba <0.591 | +/- 0.1t |
| ≥ 0.591 | +/- 0.060 |
| a. Ukuba umyalelo wokuthenga ukhankanya unyamezelo oluthabatha ubungakanani bodonga obuncinane kunexabiso elisebenzayo elinikiweyo kule theyibhile, ukunyamezela okudityanisiweyo kobukhulu bodonga kuya kwandiswa ngesixa esaneleyo ukugcina uluhlu olusebenzayo lonyamezelo. | |
| b. Ngombhobho one-D≥ 14.000 ngaphakathi kunye ne-t≥0.984in, ukunyamezela kobunzima bodonga ekuhlaleni kunokugqithisa ukunyamezela kobunzima bodonga nge-0.05t eyongezelelweyo ngaphandle kokuba ukunyamezela kobunzima akugqithiswanga. | |
| c. Ukunyamezelana kunye nokuqina kodonga akusebenzi kwindawo ye-weld | |
| d. Bona i-API5L epheleleyo ngeenkcukacha ezipheleleyo | |
Ukunyamezelana
Imfuneko yoVavanyo
Uvavanyo lweHydrostatic
Umbhobho wokumelana novavanyo lwe-hydrostatic ngaphandle kokuvuza ngomthungo we-weld okanye umzimba wombhobho. Izihlanganisi akufuneki zivavanywe i-hydrostatic zibonelela ngamacandelo emibhobho asetyenzisiweyo avavanywe ngempumelelo.
Bend uvavanyo
Akukho zintanda ziya kwenzeka kuyo nayiphi na inxalenye yesiqwenga sovavanyo kwaye akukho kuvulwa kwe-weld kuya kwenzeka.
Uvavanyo lokucaba
Iikhrayitheriya zokwamkelwa kovavanyo lokucaba iya kuba:
- Imibhobho ye-EW D<12.750 kwi:
- X60 nge T 500in. Akusayi kubakho kuvulwa kwe-weld phambi kokuba umgama phakathi kweepleyiti ungaphantsi kwe-66% ye-diameter yangaphandle yokuqala. Kuwo onke amabakala kunye nodonga, i-50%.
- Ngombhobho nge-D / t> 10, akuyi kubakho ukuvulwa kwe-weld ngaphambi kokuba umgama phakathi kwamacwecwe ungaphantsi kwe-30% ye-diameter yangaphambili yangaphandle.
- Ngobunye ubungakanani bhekisa kwi-API 5L epheleleyo.
Uvavanyo lwempembelelo yeCVN yePSL2
Uninzi lwemibhobho yePSL2 kunye namabanga afuna i-CVN. Umbhobho ongenamthungo kufuneka uvavanywe emzimbeni. Umbhobho odityanisiweyo kufuneka uvavanywe emzimbeni, umbhobho weld kunye nendawo echaphazelekayo kubushushu. Jonga kwi-API 5L epheleleyo yenkcazo yetshathi yobungakanani kunye namabanga kunye namaxabiso afunekayo afunxa amandla.
