API 5L gabaɗaya yana nufin ƙa'idodin aiwatarwa don bututun ƙarfe na bututun bututu, waɗanda suka haɗa da manyan nau'ikan guda biyu:bututun ƙarfe mara nauyikumawelded karfe bututu. A halin yanzu, nau'ikan bututun ƙarfe da aka saba amfani da su a cikin bututun mai sunekarkace submerged baka welded bututu(SSAW PIPE),a tsaye nutsewar baka welded bututu(LSAW PIPE), dalantarki juriya welded bututu(ERW). Ana zaɓin bututun ƙarfe maras sumul yawanci lokacin da diamita na bututun bai wuce 152mm ba.
Ma'aunin GB/T 9711-2011 na ƙasa, Bututun Karfe don Tsarin Sufuri na Bututu a Masana'antun Man Fetur da Gas, an haɓaka su bisa API 5L.
GB/T 9711-2011 Yana ƙayyadaddun buƙatun masana'antu don bututun ƙarfe marasa ƙarfi da welded da ake amfani da su a cikin tsarin jigilar bututun mai da iskar gas, wanda ke rufe matakan ƙayyadaddun samfur guda biyu (PSL1 da PSL2). Don haka, wannan ma'auni ya shafi bututun ƙarfe mara sumul da waldadden don watsa mai da iskar gas kuma baya amfani da bututun ƙarfe.
Makin Karfe
API 5L karfe bututu amfani daban-daban albarkatun kasa maki ciki har da GR.B, X42, X46, X52, X56, X60, X70, X80, da sauransu. Yanzu an ƙera ƙarfen bututun mai da maki X100 da X120. Matsayin ƙarfe daban-daban suna ba da buƙatu daban-daban akan albarkatun ƙasa da hanyoyin samarwa.
Matakan inganci
A cikin ma'aunin API 5L, ingancin bututun ƙarfe an kasafta shi azaman PSL1 ko PSL2. PSL tana tsaye don Matsayin Ƙayyadaddun Samfura.
PSL1 yana ƙayyadaddun buƙatun ingancin gabaɗaya don bututun ƙarfe; PSL2 yana ƙara buƙatun wajibai don haɗar sinadarai, ƙaƙƙarfan ƙima, kaddarorin ƙarfi, da ƙarin gwajin NDE.
Lokacin aikawa: Satumba-01-2025