This standard specifies the type, basic dimensions, technical requirements, face testing methods, face inspection rules, packaging, transportation, storage, etc. of ball core angled plug doors for railway freight cars (hereinafter referred to as spherical core angled plug doors). This standard applies to new ball-core angular plug doors for railway freight cars. This standard is not equivalent to the AARS-470 spherical angled plug door approval technical conditions.
TB/T 2698-1996 history
2009TB/T 2698-2009 Ball angle cock and combined dirt collector for rolling stock
1996TB/T 2698-1996 Ball core angled plug door for railway wagon