Zodziwika bwino

API 5L nthawi zambiri imatanthawuza muyeso wa kuphedwa kwa chitoliro cha mzere. Chitoliro chamzere chimaphatikizapo mipope yachitsulo yopanda msoko ndi mapaipi achitsulo. Pakalipano, mitundu yomwe imagwiritsidwa ntchito kwambiri pamipaipi yamafuta imaphatikizapo spiral submerged arc welded chitoliro (SSAW), msoko wowongoka pansi pamadzi arc welded chitoliro (LSAW), ndi chitoliro chotchinga chamagetsi (RW). Mipope yachitsulo yopanda msoko nthawi zambiri imasankhidwa pomwe m'mimba mwake wa chitoliro ndi wosakwana 152mm.

Mapaipi amtundu wa GB/T 9711-2011 azitsulo zamapaipi amafuta ndi gasi amapangidwa kutengera API 5L.

Mtengo wa GB/T9711-2011 imatchula zofunikira zopangira mapaipi achitsulo osasunthika ndi mapaipi achitsulo otsekemera pamiyezo iwiri yodziwika bwino (PSL1 ndi PSL2) yomwe imagwiritsidwa ntchito pamapaipi amafuta ndi gasi. Choncho, muyezo uwu umangogwira ntchito pa mapaipi opanda zitsulo ndi ma welded zitsulo zoyendetsa mafuta ndi gasi, ndipo sizikugwira ntchito pazitsulo zachitsulo.

Chitsulo kalasi

The zopangira zitsulo makalasi aAPI 5Lmapaipi achitsulo akuphatikiza GR.B,x42, X46, X52, X56, X60, X70, X80, etc. Osiyana zitsulo mipope mipope zitsulo ndi zofunika zosiyanasiyana zopangira ndi kupanga, koma ofanana mpweya pakati kalasi osiyana zitsulo amalamulidwa mosamalitsa.

Quality Standard

Mu API 5L chitsulo chitoliro muyezo, miyezo khalidwe (kapena zofunika) mapaipi zitsulo amagawidwa PSL1 ndi PSL2. PSL ndi chidule cha mlingo specifications mankhwala.

PSL1 amapereka ambiri payipi zitsulo chitoliro khalidwe mlingo zofunika; PSL2 imawonjezera zofunikira pakuphatikizidwa kwamankhwala, kulimba kwa notch, mphamvu zamphamvu ndi NDE yowonjezera.

Chitoliro chachitsulo chachitsulo cha PSL1 chitoliro chachitsulo (dzina losonyeza mphamvu ya chitoliro chachitsulo, monga L290, 290 chimatanthawuza mphamvu zochepa zokolola za thupi la chitoliro ndi 290MPa) ndi kalasi yachitsulo (kapena kalasi, monga X42, kumene 42 imayimira mphamvu zochepa zokolola kapena bwalo lapamwamba Mphamvu zochepa zokolola za chitoliro chachitsulo (mu psi) ndizofanana ndi zitoliro zachitsulo Zimapangidwa ndi zilembo kapena nambala yosakanikirana ya zilembo ndi manambala omwe amadziwika ndi mphamvu chitoliro chachitsulo, ndipo kalasi yachitsulo ikugwirizana ndi mankhwala achitsulo.

Mipope yachitsulo ya PSL2 imapangidwa ndi zilembo kapena kuphatikiza zilembo ndi manambala omwe amagwiritsidwa ntchito pozindikira mphamvu ya chitoliro chachitsulo. Dzina lachitsulo (chitsulo kalasi) limagwirizana ndi mankhwala achitsulo. Zimaphatikizanso chilembo chimodzi (R, N, Q kapena M) chimapanga chiganizo, chomwe chimasonyeza momwe akuperekera. Kwa PSL2, pambuyo pa malo operekera, palinso chilembo S (malo ogwiritsira ntchito asidi) kapena O (malo ogwirira ntchito zam'madzi) akuwonetsa momwe ntchito ikuyendera.

Kuyerekeza kwa Quality Standard

1. Mulingo wabwino wa PSL2 ndi wapamwamba kuposa wa PSL1. Magawo awiriwa samangokhala ndi zofunikira zosiyana zoyendera, komanso amakhala ndi zofunikira zosiyana pakupanga mankhwala ndi makina. Choncho, poyitanitsa malinga ndi API 5L, mawu omwe ali mu mgwirizanowo sayenera kusonyeza zizindikiro, masitepe achitsulo, ndi zina zotero. Kuwonjezera pa zizindikiro zachizolowezi, mlingo wa mankhwalawo uyeneranso kuwonetsedwa, ndiko kuti, PSL1 kapena PSL2. PSL2 ndi yolimba kuposa PSL1 ponena za kapangidwe ka mankhwala, mphamvu zolimba, mphamvu zowononga, kuyesa kosawononga ndi zizindikiro zina.

2. PSL1 sifunika kukhudza magwiridwe antchito. Pazitsulo zonse zachitsulo za PSL2 kupatula kalasi yachitsulo ya X80, kukula kwathunthu 0℃ Akv avareji: longitudinal ≥101J, transverse ≥68J.

3. Mipope ya mzere iyenera kuyesedwa kuti iwonetsetse kuthamanga kwa hydraulic imodzi ndi imodzi, ndipo muyezo sunena kuti kulowetsedwa kosawonongeka kwa kuthamanga kwa madzi kumaloledwa. Izinso ndi kusiyana kwakukulu pakati pa miyezo ya API ndi miyezo yaku China. PSL1 sifunikira kuwunika kosawononga, pomwe PSL2 imafuna kuwunika kopanda chiwonongeko chimodzi ndi chimodzi.