peter_great 发表于 2017-5-12 16:47
http://bbs.infoeach.com/forum.php?mod=viewthread&tid=148101&extra=
peter_great 发表于 2017-5-12 16:05
NF A49-150/A1:2005-10-01; NF EN 10224/A1:2005-10-01
non-alloy steel tubes and fittings for the conve ...
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