低压流体输送用焊接钢管GB_T3091(公称外径不大于168.3mm钢管的尺寸规格)

Modified on: September 19,2013  
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勇鹏 南

User since: 4/8/2009
Title: Engineer
 
Skills:
设计
Interests:
计算机、乒乓球
 
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