Dukansu en39 da en74 sune ƙa'idodi don samar daScapfolding Karfe bututun ƙarfea cikin kasashen Turai. An yi amfani da bututun karfe mai narkewa azaman roka don bututun mai ƙarfe scapfold, wanda aka kafa ta hanyar mirgine tsiri tsattsauran tsinkewa ta hanyar aiwatar.
Standarshen en39 misali ne na Turai. Daidaitaccen na bukatar cewa bututun karfe mai hoto da aka yi da ƙananan ƙwayar ƙwayar ƙwayar ƙwayar cuta ko alloy karfe. Kauri daga bututu mai ƙarfe shine 3.2 mm kuma ya yarda da karkacewa da ƙari ko debe 10%.
A halin yanzu, Standarshen En74 shine matsayin Turai. Mummunan bututu da aka buƙata ta hanyar daidaitaccen abu daidai yake da na en39 Standard. Ana buƙatar farin ciki mai kauri a cikin karfe 4.0 kuma ya yarda da karkacewa da ƙari ko debe 10%. Ana kula da farfajiya tare da zafi-galvanizing.
Lokacin Post: Jun-23-2020