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GB/T 20490-2006 standard english preview version PDF file download



GB Standard Code GB/T 20490-2006
Standard Category China National Standards
GB Standard English Title Seamless and welded (except submerged arc-welded) steel tubes for pressure purposes - Ultrasonic testing for the detection of laminar imperfections
GB Standard Chinese Title 承压无缝和焊接(埋弧焊除外)钢管分层的超声检测
Chinese Version Price $15 USD per 50 pages
English Translation Price About $15  per 1 page; Inquire us for detail price

 
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