| Kauri | |
| Tsawon | |
| Daidaitawa | |
| Karfe daraja | |
Cibiyar Man Fetur ta Amurka ce ta kafa wannan ma'auni kuma tana ƙayyadaddun buƙatun don kera bututun layin da ake amfani da shi don isar da mai, iskar gas, da sauran samfuran tushen mai. Yarda da API 5L yana tabbatar da cewa bututun ƙarfe na LSAW ya dace da ingancin da ake buƙata da ƙa'idodin aiki don amfani a cikin masana'antar mai da iskar gas.
ASTM A53 ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun bututu ne, ƙarfe, baƙar fata da tsoma mai zafi, mai rufin tutiya, walda da sumul. Yarda da ASTM A53 yana tabbatar da cewa bututun ƙarfe na LSAW ya cika takamaiman buƙatun don amfani a aikace-aikacen inji da matsa lamba, da kuma don amfanin gabaɗaya.
ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙayyadaddun ƙaƙƙarfan bututun ƙarfe na welded da maras sumul. Idan ya zo ga LSAW (Longitudinal Submerged Arc Welded) bututun ƙarfe, bin ASTM A252 yana da dacewa musamman ga aikace-aikacen da suka shafi tarin bututun ƙarfe da aka yi amfani da su a cikin ayyukan gini da ayyukan tallafi. ASTM A252 yana ƙayyadaddun buƙatun fasaha don tarin bututun ƙarfe, gami da girma, kaddarorin inji, da hanyoyin gwaji.
An ƙera bututun ƙarfe na LSAW waɗanda suka dace da ASTM A252 don biyan takamaiman buƙatun don amfani da su a cikin aikace-aikacen tarawa, kamar ginin tushe, tsarin ruwa, ginin gada, da sauran ayyukan injiniyan farar hula. Yarda da ASTM A252 yana tabbatar da cewa bututun ƙarfe na LSAW sun cika ingantattun inganci, aiki, da ƙa'idodin aminci don amfani da su a cikin aikace-aikacen tarawa.
