315 GB/T 3289.6-1982 可锻铸铁管路连接件型式尺寸 侧孔弯头 Malleable cast iron pipe fittings--Type size--Side outlet elbows
316 GB/T 3289.7-1982 可锻铸铁管路连接件型式尺寸 月弯 内外丝月弯 外丝月弯 Malleable cast iron pipe fittings--Type size--Return bends, male and female return bends, thread return bends
317 GB/T 3289.8-1982 可锻铸铁管路连接件型式尺寸 45°月弯45°内外丝月弯45°外丝月弯 Malleable cast iron pipe fittings--Type size--Long sweep bends 45°,male and female long sweep bends 45°,male long sweep bends 45°
318 GB/T 3289.9-1982 可锻铸铁管路连接件型式尺寸 U型弯头 Malleable cast iron pipe fittings--Type size--U-Elbows(return bends)
319 GB/T 3289.10-1982 可锻铸铁管路连接件型式尺寸 三通 内外丝三通 Malleable cast iron pipe fittings--Type size--Tees, male and female tees
320 GB/T 3289.11-1982 可锻铸铁管路连接件型式尺寸 异径内外丝三通 Malleable cast iron pipe fittings--Type size--Male and female reducing tees
321 GB/T 3289.12-1982 可锻铸铁管路连接件型式尺寸 中大异径三通 Malleable cast iron pipe fittings--Type size--Medium-large reducing tees [tees(increasing on the branch)]
322 GB/T 3289.13-1982 可锻铸铁管路连接件型式尺寸 侧大异径三通 Malleable cast iron pipe fittings--Type size--Lateral-large reducing tees
323 GB/T 3289.14-1982 可锻铸铁管路连接件型式尺寸 中小异径三通 Malleable cast iron pipe fittings--Type size--Medium-less reducing tees
324 GB/T 3289.15-1982 可锻铸铁管路连接件型式尺寸 侧小异径三通 Malleable cast iron pipe fittings--Type size--Lateral-less reducing tees
325 GB/T 3289.16-1982 可锻铸铁管路连接件型式尺寸 中小偏心异径三通 Malleable cast iron pipe fittings--Type size--Medium-less eccentric reducing tees
326 GB/T 3289.17-1982 可锻铸铁管路连接件型式尺寸 45°三通 Y型三通 Malleable cast iron pipe fittings--Type size--Tees45°, Y pieces(tees)
327 GB/T 3289.18-1982 可锻铸铁管路连接件型式尺寸 Y型异径三通 Malleable cast iron pipe fittings--Type size--Y Piece reducing(tees)