Ouch, this touches a raw nerve for me as well. Right now I am designing some low pressure alloy exchangers with MAWP's not allowed to be limited by reinforcement or nozzle ratings. These sub 100 psig designs are jumping to 300 plus pound designs with 300# flanges and more difficult to find...
While I am not really big on the idea of Chinese production (materials or finished products), the lack of information provided with the impressive set of pictures begs a lot questions concerning the failure depicted.
Such as: What is the metallugy? Thickness? Is it a Cr-Mo steel clad with a...