IS:1161-1979. Indian standard specification for steel tubes for structural purposes.
Bureau of Indian Standards[BIS]
IS:1161-1979. Indian standard specification for steel tubes for structural purposes. - New Delhi Bureau of Indian Standards 1989 - 13p.
ENG
IS CODE / B.I.S
IS:1161-1979. Indian standard specification for steel tubes for structural purposes. - New Delhi Bureau of Indian Standards 1989 - 13p.
ENG
IS CODE / B.I.S