Hot taps or weld built-ups什么意思？ hot tap 带压开孔 http:///periodical_hjxb200504007.aspx hot tap connection 参照 http:///patents?hl=zh-cn&lr=&vid=uspat5842496&id=rxqxaaaaebaj&oi=fnd&dq=.the+making+of+a+permanent+hot+tap+connection&printsec=abstract#v=onepage&q=&f=false 查看更多
关于防腐除锈的标准？ comparative listing of nace, sspc, iso and bsi surface preparation standard note: this chart is comparative only, since many standards are not equivalent nace sspc iso 8501-1 cb-3092 china standard bsi bs 7079 nonabrasive blast cleaning solvent cleaning sspc-sp-1 hand tool cleaning sspc-sp-2 st2 or st3 t3 identical to iso st (2 or 3) power tool cleaning sspc-sp-3 st2 or st3 t2 identical to iso st (2 or 3) power tool cleaning to bare metal sspc-sp-11 flame cleaning sspc-sp-4 f1 identical to iso f1 pickling sspc-sp-8 abrasive blast cleaning joint surface preparation standards white metal nace no. 1 / sspc-sp-5 sa 3 (blast cleaning to visually clean steel) b1 identical to iso sa 3 near-white metal nace no. 2 / sspc-sp-10 sa 2.5 (very thorough blast cleaning) b2 identical to iso sa 2.5 commercial nace no. 3 / sspc-sp-6 sa 2 (thorough blast cleaning) b3 identical to iso sa 2 brush-off nace no. 4 / sspc-sp-7 sa 1 (light blast cleaning) identical to iso sa1 water blasting nace no. 5 / sspc-sp-12 [ ]查看更多
第1天
关注盖德视界
添加小助手
