| 彎管尺寸 薄管,厚管,瓦斯管 管模      管徑                 管模           管徑A15    15.9                B70          75.2
 A19    19.1                B82          87.9
 A25    25.4                SGP-15    21.7
 A31    31.8                SGP-20    27.2
 A39    38.1                SGP-25    34.0
 A51    50.8                SGP-32    42.7
 A63    63.5                SGP-40    48.6
 A75    76.2                SGP-50    60.5
 B16    21.0                SGP-65    76.3
 B22    26.5
 B28    33.3
 B36    41.9
 B42    47.8
 B54    59.6
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