Don dalilai masana'antu, a cikin tsarin bututun ruwa, yawanci muna buƙatar canza hanyar watsa; tsara kwararar ruwa (mai da gas, ruwa, laka); Buɗe ko rufe bututun, da sauransu sabili da haka, don cim ma waɗannan ayyukan, za a yi amfani da abubuwan bututun ƙarfe.
Standard Sus, Aisi, Din
Diamita 5 ~ 500mm
Alloy karfe carbon carbon bakin karfe duplex karfe flance zobe