Klas nke ngwaahịa roba nke tubular na-ebufe gas, mmiri, slurry ma ọ bụ ihe omimi. A na-ejikọ ya nke dị n'ime ma mee ka ọ dị n'ime ya, na ihe nke ọkpụkpụ, eriri nke ahịhịa dị iche iche, wdg. Emere mmanụ na-eguzogide mmanụ nke Neoprile na roba na nitri; A na-eji rọrọ- na alkali-na-eguzogide ọgwụ, nke okpomoku na-eguzogide nke ethylene ma ọ bụ roba ma ọ bụ sọks

; s552; S582; J-3080P; J-302E; Ter 4039; Ter 4047; Ter 4049;
Cr: SN121; SN122; SN123; SN232; SN232; SN232; SN232; SN232; SN321; SN321;