304 Kupwanya mahwendefa kunoitwa makumi matatu nemashanu simbi, zvinhu zvakajairika uye zvakakurumbira muzvinyorwa zvakawanda zveindasitiri izvo zvinoda kuramba kupokana neoxdion uye oxidation. Aya maS30400 kupaza mahwende ekupaza anogadzirira uchishandisa hunyanzvi hwemachina uye maitiro, ayo anoona kuti vakanyatsojeka uye vakavimbika.
ASTM A316 TP316 chiitiko chakajairika chechisema, seam yakakwira, uye inotonhora yakashanda yakashanda muAustenitic isina mapaipi ebundu uye general corrorive. Pombi 316 isina kugadzirwa yeindasitiri yakagadzirwa kubva musanganiswa weChromium, Nickel, uye Molbdenum, iyo inopa SS 316 seamless tube yakanakisa kuramba uye ngura.

Simba rekusimba reSS 253 maLages rakakamurwa kuita mapoka maviri, anonzi mukati mehuwandu hwehuwandu hweHard Nekudaro, Simba rekusimba reSS 253 ma Flange mukati merimwe nguva yakatarwa ndiyo yekupedzisira yegumi nemazana masere muzana, its nzvimbo yayo, uye yayo 0.2% yekubvisa lead simba ndeye 45000 PSI.