標準號：IS 1879-1987
發(fā)布日期：1971/11/1 12:00:00
實施日期：1999/12/31 12:00:00
適用范圍：1.1 This standard covers requirements for follow-ing types of malleable cast iron pipe fittings threaded in accordance with IS : 554-1975* for general purposes for the transmission of fluid and gas upto the limit of pressure and temperature specified in 1.3:a) Elbows including twin elbows, union elbows and side outlet elbows,b) Tees including pitcher tees and side outlet tees,c) Grosses.d) Bends including long sweep bends and return bends,e) Sockets,f) Bushing and hexagon nipples,g) Backnuts,h) Caps and plugs, and j) Unions.1.2 Dimensions which are not included in the standard are left to the discretion of the manufac-turer depending on the end use of the fittings.1.3 These fittings shall be suitable for working pressure of up to 1.4 MPa in the case of water and up to 0.7 MPa in the case of steam, air, gas and oil at a temperature not exceeding 100°C.