/ U 2-199 for bolted types; 300-399 for male types and 400-599 for female types. 2-199用螺纹型 300-399凸面型 400-599凹面型。1 = [Blank] 没有2 = ’FE’ [Flanged end] 法兰端部U 11-15 fo
/ U 2-199 for bolted types; 300-399 for male types and 400-599 for female types. 2-199用螺纹型 300-399凸面型 400-599凹面型。1 = [Blank] 没有2 = ’FE’ [Flanged end] 法兰端部U 11-15 fo