1993LS/T 3501.6-1993 General technical conditions for grain and oil processing machinery Welding parts
1970LS 38-1982 General technical conditions for grain and oil processing machinery Welding parts
LS/T 3501.6-1993 General technical conditions for grain and oil processing machinery Welding parts has been changed from SB/T 10148.6-1993 General technical conditions for grain and oil processing machinery Welding parts.