环形管汇适用于油田各种高压作业排放管线、输液管线、试井管线、固井泥浆管线以及其他高压工况输送液流。它由活动弯头、直管总成组成，易于叠合、方便运输和储存。有灵活、抗冲击、抗震动、流量大的特点。

环形管汇主要有三种形式：短半径环形管汇、长半径环形管汇、活洛式环形管汇。规格1″、11/2″、2″、3″、4″工作压力35MPa~140MPa（5000 psi~20000psi)。其中活动弯头常规配置为50型活动弯头，也可选配10型活动弯头。

Annular manifold is suitable for oil field of high voltage discharge pipeline,oil pipeline,well test line,the cementing slurry pipeline and other working condition of high pressure conveying fluid flow.It is composed of elbow,straight pipe assembly,easy to composite,convenient transportation and storage.Have flexibility,impact resistance,resistance te vibration,the characteristics of the large flow.

Annular manifold mainly has three forms:short radius annular manifold,long radius annular manifold,live los type circular manifold.Specifications 1 & quot;,1-1/2",2& quot;,& quot;3,4,& quot;the work pressure of 35 MPa to 140 MPa (5000 psi-20000 psi).The activity type elbow general configuration of 50 elbow,elbow also optional 10 type activities