PIPE SUTINGS A China
Abubuwan da ke fitarwa sun lalace samfurori masu ƙarfi da fa'idodin farashi mai tsada a kan dabarun haɓaka na al'ada.
Tuntube muSamu farashin
Raba:
Wadatacce
Yaya aka shigar? A cikin sauki: a gefe ɗaya, abubuwan da ake ciki (misali weldolet) an gyara shi a cikin bututun azanci tare da cikakken shigar da shigar ciki da, a gefe guda, welded) akan bututun reshe. Tabbas, za a yanke bututun a kan kusancin yankin da bututu yake buƙatar zama alama.
Bincike
Mafi yawan bututun bututun