Sisandula ukusayina isivumelwano nomthengi waseIndiya kwiveki ephelileyo. Le mveliso yipayipi yentsimbi engenamthungo exutyiweyo.I-ASTM A335 P11Sinempahla ethile yeemveliso ze-alloy, ukuze sikwazi ukufumana iimveliso zabathengi. Umthengi lo mbhobho usetyenziselwa ityhubhu egobileyo, ityhubhu egobileyo njengento yokutshintshiselana nobushushu, esebenza ixesha elide kwimeko yegesi yobushushu obuphezulu, njengesitshintshi sobushushu sebhoyila esinetyhubhu egobileyo sisebenzisa indawo embi, ubushushu obuphezulu kunye noxinzelelo oluphezulu kunye nomoya otshisayo, nto leyo efuna ukuba ityhubhu egobileyo ibe nesalathisi sokusebenza okuphezulu. Ezifana nokusebenza okuchasene nokugqwala, ukusebenza okuchasene nokuguguleka, ukumelana okuncinci koqhagamshelwano, Uzinzo oluPhezulu kunye nokukwazi ukulwa nokugqwala kothuthu.

SikwanayoI-ASME A210(A210M) GrA1,GrC, umbhobho webhoyila kunye nombhobho weflue webhoyila, kuquka umbhobho wesiphelo sokhuseleko kunye nombhobho we-strut kunye nombhobho omncinci wodonga olungenamthungo kunye nombhobho wentsimbi yekhabhoni ephakathi onomthungo wombhobho we-superheater.

I-ASME A179, i-ASMEA192 njalo njalo.