HG/T 20592  法兰 PL 40(B)-16 GБ∙╗Б■░Б■╛п╧Б∙╗Б√▓я┌п╔п╗Б∙╗Б■░я┌п╕п╒Б∙╗п║я┌п╓п╪Б■╛п╟Б∙╗п║я┌п≤п╙