ሞዴል: ZSTM B-15, ZSTM B-20, ZSTM B-25የወራጅ ባህሪያት፡ 15 20 25የክር መጠን፡ R₂ 1/2ስመ የስራ ጫና: 0.1MPaየመርፌ አንግል(°): 120