During the Spiral welded pipe production, the main reasons of manual bend caused in strip steel are unusual aline of strip steel in strip steel connection weld process.
在螺旋焊管生产过程中，钢带产生人为硬弯的主要原因是对头焊工序中钢带不能对齐所致。
The outer lateral of the spiral chute is equipped with a plurality of connection earrings which are fixedly connected with and fixing stents through fixing rods.
螺旋溜槽外侧设有若干个通过固定杆与固定支架连接固定的联结耳环。
The form of air path connection: connected with spiral tube .
电路连接形式：螺旋七芯线快插头。
The form of air path connection: connected with spiral tube .
电路连接形式：螺旋七芯线快插头。
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