Halayen bututun Karfe mara sumul (SMLS):

Seamless (SMLS) karfe bututu da aka yi da bututu blank ko m ingot, sa'an nan ta hanyar zafi birgima ko sanyi mirgina / kõma tsari don gama karshe bututu bayani dalla-dalla, ba tare da weld, tare da matsakaita bango kauri, wanda zai iya ɗaukar tsakiyar & high matsa lamba da kuma ma. na iya amfani da shi a cikin yanayi mara kyau.

Bututun ƙarfe maras sumul da aka fi amfani da shi don jirgin ruwa da isar da ruwa kamar jigilar mai, iskar gas, iskar gas, tururi, ruwa da wasu ƙaƙƙarfan abu, da sauransu.