328 GB/T 3289.19-1982 可锻铸铁管路连接件型式尺寸 侧孔三通 Malleable cast iron pipe fittings--Type size--Side outlet tees
329 GB/T 3289.20-1982 可锻铸铁管路连接件型式尺寸 四通 Malleable cast iron pipe fittings--Type size--Crosses
330 GB/T 3289.21-1982 可锻铸铁管路连接件型式尺寸 异径四通 Malleable cast iron pipe fittings--Type size--Reducing crosses
331 GB/T 3289.22-1982 可锻铸铁管路连接件型式尺寸 外接头 内外丝接头 Malleable cast iron pipe fittings--Type size--Male joints(sockets), male and female joints (sockets)
332 GB/T 3289.23-1982 可锻铸铁管路连接件型式尺寸 无方内接头 Malleable cast iron pipe fittings--Type size--No-square inner joint (nipples)
333 GB/T 3289.24-1982 可锻铸铁管路连接件型式尺寸 异径外接头 Malleable cast iron pipe fittings--Type size--Reducing male joints (sockets)
334 GB/T 3289.25-1982 可锻铸铁管路连接件型式尺寸 偏心异径外接头 Malleable cast iron pipe fittings--Type size--Eccentric reducing male joints (sockets)
335 GB/T 3289.26-1982 可锻铸铁管路连接件型式尺寸 内接头 Malleable cast iron pipe fittings--Type size--Inner joints (nipples hexagon)
336 GB/T 3289.27-1982 可锻铸铁管路连接件型式尺寸 异径内接头 Malleable cast iron pipe fittings--Type size--Reducing inner joints(nipples hexagon)
337 GB/T 3289.28-1982 可锻铸铁管路连接件型式尺寸 内外螺丝 Malleable cast iron pipe fittings--Type size--Male and female screws (bushings)
338 GB/T 3289.29-1982 可锻铸铁管路连接件型式尺寸 通丝外接头 Malleable cast iron pipe fittings--Type size--Through thread male joint (sockets)
339 GB/T 3289.30-1982 可锻铸铁管路连接件型式尺寸 锁紧螺母 Malleable cast iron pipe fittings--Type size--Backnuts
340 GB/T 3289.31-1982 可锻铸铁管路连接件型式尺寸 外方管堵 Malleable cast iron pipe fittings--Type size--Outer-square plugs
341 GB/T 3289.32-1982 可锻铸铁管路连接件型式尺寸 带边外方管堵 Malleable cast iron pipe fittings--Type size--Outer-square beaded plugs