Ji 'nan stainless steel pipe connection methods are commonly used welding connection, socket welding connection and pipe thread connection.
济南不锈钢管的衔接方法常用的有对焊衔接、承插焊衔接以及管螺纹衔接。
The first administrator of Musical House was Fan An-ji, who was in charge of the musicians and had people who held the post no necessary connection with music brilliance.
唐代第一任教坊使为范安及，教坊使的职能是管理乐人与音乐，他们与音乐才华没有必然的联系；
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