Butt walda flange, kuma aka sani da babban wuyansa flange, ne wani irin bututu dacewa, yana nufin wuyansa da zagaye bututu miƙa mulki da bututu butt walda flange dangane. Welding flange ba sauki nakasawa, mai kyau sealing, yadu amfani, dace da matsa lamba ko zazzabi hawa da sauka na bututun ...
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