API 5L bututu shine bututun ƙarfe na carbon da ake amfani da shi don watsa mai da iskar gas, ya haɗa da bututun da aka ƙera a cikin sumul da walda (ERW, SAW).Kayayyakin sun ƙunshi API 5L Grade B, X42, X46, X52, X56, X60, X65, X70, X80 PSL1 & PSL2 akan teku, teku da sabis na tsami.API 5L ma'aunin aiwatarwa...
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