Nthawi zambiri, API 5L imatanthawuza chitoliro cha API 5L, chomwe chili kunja kwa mafuta, gasi, madzi, zonyamulidwa ndi mapaipi kupita kumakampani ogulitsa mafuta ndi gasi.

malinga ndi kupanga ndi chitoliro cha chubu chomwe chimagwiritsidwa ntchito mosiyanasiyana, api 5l imatha kugawidwa mu chitoliro chachitsulo cha api 5l ndi api welded chitsulo chitoliro, pakati pa kugwiritsidwa ntchito kwa chitoliro chachitsulo chowotcherera ndi choposa chitoliro chopanda chitsulo.

Mzere chitoliro kalasi ndi zigawo mankhwala

API 5L akhoza kugawidwa mu API 5L PSL 1 ndi API 5L PSL 2, kuphatikizapo API 5L PSL 1 mlingo ndi siyana ndi: A, B, x42, x46, x52, x56, x60, x65, x70, API 5L PSL 2 mlingo ndipo gulu ndi B, x42, x46, x52, x56, x60, x65, xx70, x80.m'mwamba mlingo mphamvu mawotchi katundu.

Ntchito: amagwiritsidwa ntchito pamakampani amafuta ndi gasi, gasi, madzi, zoyendera mafuta.

API 5L PSL 1 Chemical kapangidwe ndi makina katundu

Chitsulo giredi C(max) Mn(max) P(max) S(max) Mphamvu zolimba zochulukira

B 0.28 1.20 0.030 0.030 414 241

X42 0.28 1.30 0.030 0.030 414 290

X46 0.28 1.40 0.030 0.030 434 317

X52 0.28 1.40 0.030 0.030 455 359

X56 0.28 1.40 0.030 0.030 490 386

X60 0.28 1.40 0.030 0.030 517 414

X65 0.28 1.40 0.030 0.030 531 448

X70 0.28 1.40 0.030 0.030 565 483

API 5L PSL 2 Chemical kapangidwe ndi makina katundu

Chitsulo giredi C(max) Mn(max) P(max) S(max) Mphamvu zolimba zochulukira

B 0.24 1.20 0.025 0.015 414-758 241-758

X42 0.24 1.30 0.025 0.015 414-758 290-758

X46 0.24 1.40 0.025 0.015 434-758 317-758

X52 0.24 1.40 0.025 0.015 455-758 359-758

X56 0.24 1.40 0.025 0.015 490-758 386-758

X60 0.24 1.40 0.025 0.015 517-758 414-758

X65 0.24 1.40 0.025 0.015 531-758 448-758

X70 0.24 1.40 0.025 0.015 565-758 483-758

API SPEC 5L Line Pipe

API SPEC 5L mzere kupanga chitoliro chitoliro chagawidwa mu zitsulo chitoliro chosanja, ERW zitsulo chitoliro, kumizidwa arc welded chitoliro.Koma ntchito yaikulu ya seamless zitsulo chitoliro (The Seamless), molunjika msoko mkulu pafupipafupi kukana kuwotcherera zitsulo chitoliro (Electric Resistance Arc kuwotcherera, chidule monga ERW), LSAW (Longigudinally Submerged Arc kuwotcherera lalifupi LSAW), ozungulira kumizidwa Arc welded chitoliro (Spirally) Submerged Arc Welding, yochepa SSAW) anayi.

LSAW chitoliro anawagawa UO (kupanga njira UOE), RB (RBE), ndi JCO (JCOE) ndi mitundu ina.Chitsulo mbale mu akamaumba akanati mbamuikha mu U woboola pakati, ndiyeno mbamuikha mu O-, ndiyeno mkati ndi kunja kumizidwa arc kuwotcherera, pambuyo kuwotcherera, kawirikawiri kumapeto kwa utali wonse wa expander (Kukulitsa) wotchedwa UOE welded chitoliro, osati kukula chodziwika kuti UO chitoliro.Kupanikizika zitsulo mbale mpukutu kupinda (Pulumutsa kupinda), ndiyeno mkati ndi kunja kumizidwa arc kuwotcherera, pambuyo kuwotcherera, kuwonjezera RBE chitoliro, kapena osati kuwonjezera RB chitoliro.Akamaumba mbale monga mtundu JOC-kuti kuwonjezera JCOE chitoliro kapena osati kuwonjezera JCO chitoliro pambuyo kuwotcherera.LSAW mapaipi pamwamba, ntchito wamba UOE.The high frequency resistance kukana kuwotcherera chubu ERW chubu mwana wosabadwayo kudzera pakhungu zotsatira ndi moyandikana zotsatira mu mkulu-pafupipafupi panopa m'mphepete mwa kusungunula, ndiyeno kufinya odzigudubuza pansi kuthamanga kuwotcherera, amene imadziwika ndi palibe zitsulo zakunja filler, kutentha anakhudzidwa zone, mkulu kupanga bwino.Spiral seam chitoliro cha SSAW kwa chitoliro cha mtunda wautali chimakhala ndi mbiri yakale, payipi ku China imagwiritsidwa ntchito kwambiri.