加肋管,带翅散热管
rehabilitation of large concrete sewer pipline by sliplining pe spirally winding double wall rectangular-hollow ribbed pipe
用聚乙烯缠绕双壁矩形中空肋壁管修复大口径排水管
Four test pieces were designed to make experiments and the results were compared with corresponding theoretical formulas taking into account the influence of the ribbed pipe stiffener on the bearing capacity of welded spherical joints.
为考虑加劲钢管对焊接球承载力的影响,本文设计了4组试件进行承载力试验,并将试验结果与相应理论公式进行了比较。
A study concerning the feasibility of equipment for producing the inner ribbed spiral tubes with the existing pipe welding line is given.
分析了在现有焊管机组上生产内凸筋螺旋焊管的设备可行性。
heat exchanger made with cast iron ribbed pipe
肋形管加热器
a new design of stretcher of large whole ribbed-pipe wall broad
大型整体带筋管壁板展开机的改进设计
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