API 5L X42, yomwe imadziwikanso kuti L290, ndi mtundu wa chitoliro chomwe chimagwiritsidwa ntchito pamakampani amafuta ndi gasi.
Zinthu zakuthupi ndi amphamvu zochepa zokolola za 42,100 psi(290 MPa) ndi amphamvu yocheperako ya 60,200 psi(415 MPa).Ndi giredi imodzi yapamwamba kuposa API 5L Giredi B ndipo ndiyoyenera kugwiritsa ntchito mphamvu zapakatikati.
X42 imapangidwa nthawi zambiri mu Seamless, SSAW, LSAW, ndi ERW.Zopaka ndi zomaliza zilipo kuti zikwaniritse zofunikira za ntchito.
Zoyenera Kutumizira
Kutengera momwe amaperekera komanso mulingo wa PSL, zitha kugawidwa motere:
PSL1: X42 kapena L290;
PSL2: X42R, X42N, X42Q, X42M kapena L290R, L290N, L290Q, L290M;
Malembo a PSL2 suffix aliyense amaimira kutentha kosiyana.
R: Wokulungidwa;
N: Normalizing;
Q: Wozimitsidwa ndi Wokwiya;
M: Chithandizo cha Thermo-mechanical.
Njira Yopangira
X42 imalola kupanga izi:
Ngati mukuwona kuti mawu achidulewa ndi ovuta kumva, onani zomwe talembazowamba achidule kwa mipope zitsulo.
Botop Steel ikhoza kukupatsirani makulidwe angapo a mapaipi monga momwe tawonetsera patebulo pansipa.
Mtundu Wathu Wopereka
Muyezo: API 5L (ISO 3183);
PSL1: X42 kapena L290;
PSL2: X42R, X42N, X42Q, X42M kapena L290R, L290N, L290Q, L290M;
Welded steel pipe:Mtengo wa LSAW(SAWL), SSAW (Mtengo wa HSAW), Chithunzi cha DSAW, ERW;
Chitoliro chachitsulo chosasokonekera:SMLS;
Mayendedwe a Chitoliro: SCH10, SCH20, SCH30, SCH40, SCH60, SCH80, SCH100, SCH120, SCH140 ndi SCH160.
Chizindikiritso: STD (Standard), XS (Yowonjezera Yamphamvu), XXS (Double Extra Strong);
Kupaka: utoto, varnish,Mtengo wa 3LPE, FBE, 3LPP, HDPE, kanasonkhezereka, epoxy zinki wolemera, simenti kulemera, etc.
atanyamula: Madzi nsalu, matabwa mlandu, zitsulo lamba kapena zitsulo waya bundling, pulasitiki kapena chitsulo chitoliro mapeto mtetezi, etc. Mwamakonda.
Zofananira Zogulitsa: Bend,flanges, zopangira mapaipi, ndi zinthu zina zofananira zilipo.
API 5L X42 Chemical Composition
Mapangidwe a Chemical a PSL 1 Pipe yokhala ndi t ≤ 25.0 mm (0.984 mu.)
Mapangidwe a Chemical a PSL 2 Pipe yokhala ndi t ≤ 25.0 mm (0.984 mu.)
Pakuti PSL2 zitsulo chitoliro mankhwala kusanthula ndimpweya wa carbon ≤0.12%, mpweya wofanana ndi CEpcmzitha kuwerengedwa pogwiritsa ntchito njira iyi:
CEpcm= C + Si/30 + Mn/20 + Cu/20 + Ni/60 + Cr/20 + Mo/15 + V/15 + 5B
Pakuti PSL2 zitsulo chitoliro mankhwala kusanthula ndimpweya wa carbon> 0.12%, mpweya wofanana ndi CEllwzitha kuwerengedwa pogwiritsa ntchito fomula ili pansipa:
CEllw= C + Mn/6 + (Cr + Mo + V)/5 + (Ni +Cu)/15
Mapangidwe a Chemical okhala ndi t ＞ 25.0 mm (0.984 mu.)
Izi zitha kukambidwa potengera zomwe zili pamwambapa.
API 5L X42 Mechanical Properties
Tensile Properties
Kuyesa kwamphamvu ndi kuyesa kofunikira pamakina a machubu achitsulo, omwe amatha kuyeza mphamvu zokolola, kulimba kwamphamvu, komanso kutalika kwa magawo ofunikira.
Mphamvu zokolola za X42 ndi 42,100 psi kapena 290 MPa.
X42 tensile mphamvu ndi 60,200 psi kapena 415 MPa.
PSL1 X42 Tensile Properties
PSL2 X42 Tensile Properties
Zindikirani: Zofunikira zafotokozedwa mwatsatanetsatane gawo la Mechanical Properties laAPI 5L X52, zomwe zitha kuwonedwa podina pamtundu wabuluu ngati mukufuna.
Zoyesera Zina Zamakina
Bend Test
Mayeso a Flattening
Mayeso owongolera-bend
Kuyesa kwa CVN Impact kwa PSL 2 Pipe
Mayeso a DWT a PSL 2 Welded Pipe
Zachidziwikire, si machubu onse omwe amafunikira kuyesedwa kuti akhale ndi zida zonse zamakina, koma mayeso amasankhidwa molingana ndi mtundu wa chubu.Zofunikira zenizeni zitha kupezeka mu Matebulo 17 ndi 18 a API 5L muyezo.
Mutha kulumikizana nafe kuti mudziwe zambiri.
Kuyesedwa kwa Hydrostatic
Nthawi Yoyesera
Miyezo yonse yamachubu achitsulo opanda msoko ndi otsekemera okhala ndi D ≤ 457 mm (18 in.):nthawi yoyesera ≥ 5s;
Chitoliro chachitsulo chowotcherera D> 457 mm (18 in.):nthawi yoyesera ≥ 10s.
Kuyeserera pafupipafupi
Chitoliro chilichonse chachitsulondipo sipadzakhala kutayikira kwa weld kapena chitoliro thupi pa mayeso.
Zovuta zoyesa
Kuthamanga kwa hydrostatic test P achitoliro chachitsulo chosamveka bwinoikhoza kuwerengedwa pogwiritsa ntchito fomula.
P = 2St/D
Sndi hoop stress.mtengowo ndi wofanana ndi mphamvu zokolola zochepa za chitoliro chachitsulo ngati peresenti, mu MPa (psi);
tndi makulidwe otchulidwa khoma, owonetsedwa mu millimeters ( mainchesi);
Dndi m'mimba mwake wotchulidwa kunja, wowonetsedwa mu millimeters ( mainchesi).
Nondestructive Inspection
Kwa machubu a SAWnjira ziwiri,UT(kuyesa kwa ultrasonic) kapenaRT(kuyesa kwa radiographic), nthawi zambiri amagwiritsidwa ntchito.
ET(kuyesa kwamagetsi) sikugwira ntchito ku machubu a SAW.
Zowotcherera pamapaipi opangidwa ndi giredi ≥ L210/A ndi mainchesi ≥ 60.3 mm (2.375 mu) aziyang'aniridwa mopanda kuwononga makulidwe onse ndi kutalika (100 %) monga zafotokozedwera.
UT mayeso osawononga
RT kufufuza kosawononga
Machubu onse opanda msoko a PSL 2, ndi machubu ozimitsidwa komanso osakhazikika a PSL1 Gulu B, adzayesedwa osawononga (100 %).
Mmodzi kapena kuphatikiza kwa ET (Electromagnetic Testing), UT (Ultrasonic Testing), ndi MT (Magnetic Particle Testing) angagwiritsidwe ntchito pa NDT.
Dimensional Tolerances
Zofunikira za API 5L pakulolerana kwazithunzi zafotokozedwa mwatsatanetsataneAPI 5L Gulu B.Kuti mupewe kubwereza, mutha kudina font yabuluu kuti muwone tsatanetsatane.
Tchati cha Ndondomeko ya Chitoliro cha API 5L
Kuti muwone mosavuta ndikugwiritsa ntchito, tapanga ndandanda yoyenera mafayilo a PDF.Mutha kutsitsa ndikuwonera zolemba izi ngati pakufunika.
Kuphatikiza apo, API 5L imatanthawuza zovomerezeka zomwe zafotokozedwa kunja kwake komanso makulidwe a khoma.
Dimensional Tolerances
Zofunikira za API 5L pakulolerana kwazithunzi zafotokozedwa mwatsatanetsataneAPI 5L Gulu B.Kuti mupewe kubwereza, mutha kudina font yabuluu kuti muwone tsatanetsatane.
Zathu Zogwirizana
Kuyambira pomwe idakhazikitsidwa mu 2014,Botop Steelwakhala katundu kutsogolera mpweya zitsulo chitoliro ku Northern China, kudziwika ndi utumiki kwambiri, mankhwala apamwamba, ndi mayankho mabuku.
Kampaniyi imapereka mapaipi osiyanasiyana a zitsulo za carbon ndi zinthu zomwe zimagwirizana nazo, kuphatikizapo zopanda msoko, ERW, LSAW, ndi chitoliro chachitsulo cha SSAW, komanso mzere wathunthu wazitsulo ndi flanges.Zopangira zake zapadera zimaphatikizanso ma alloys apamwamba kwambiri ndi zitsulo zosapanga dzimbiri za austenitic, zopangidwa kuti zikwaniritse zofunikira zama projekiti osiyanasiyana a mapaipi.
