在设计和实施管道系统时，尽可能降低整体成本。标准长度通常是(L 蕞短= 100mm，L 蕞长= 2500mm)。
然而，非标准长度有时是不可避免的。这种长度可以在规定的蕞小值和蕞大值范围内订购，具体如下：
|
法兰接口(A) |
法兰接口(B) |
长度 (mm) |
订货号 |
|
DN15 |
DN15 |
100 |
QGD-15/100B |
|
DN15 |
DN15 |
125 |
QGD-15/125B |
|
DN15 |
DN15 |
150 |
QGD-15/150B |
|
DN15 |
DN15 |
175 |
QGD-15/175B |
|
DN15 |
DN15 |
200 |
QGD-15/200B |
|
DN15 |
DN15 |
300 |
QGD-15/300B |
|
DN15 |
DN15 |
400 |
QGD-15/400B |
|
DN15 |
DN15 |
500 |
QGD-15/500B |
|
DN15 |
DN15 |
700 |
QGD-15/700B |
|
DN15 |
DN15 |
1000 |
QGD-15/1000B |
|
DN15 |
DN15 |
1500 |
QGD-15/1500B |
|
DN15 |
DN15 |
2000 |
QGD-15/2000B |
|
|
|
|
|
|
DN25 |
DN25 |
100 |
QGD-25/100B |
|
DN25 |
DN25 |
125 |
QGD-25/125B |
|
DN25 |
DN25 |
150 |
QGD-25/250B |
|
DN25 |
DN25 |
175 |
QGD-25/175B |
|
DN25 |
DN25 |
200 |
QGD-25/200B |
|
DN25 |
DN25 |
300 |
QGD-25/300B |
|
DN25 |
DN25 |
400 |
QGD-25/400B |
|
DN25 |
DN25 |
500 |
QGD-25/500B |
|
DN25 |
DN25 |
700 |
QGD-25/700B |
|
DN25 |
DN25 |
1000 |
QGD-25/1000B |
|
DN25 |
DN25 |
1500 |
QGD-25/1500B |
|
DN25 |
DN25 |
2000 |
QGD-25/2000B |
|
DN25 |
DN25 |
2500 |
QGD-25/2500B |
|
|
|
|
|
|
DN40 |
DN40 |
100 |
QGD-40/100B |
|
DN40 |
DN40 |
125 |
QGD-40/125B |
|
DN40 |
DN40 |
150 |
QGD-40/400B |
|
DN40 |
DN40 |
175 |
QGD-40/175B |
|
DN40 |
DN40 |
200 |
QGD-40/200B |
|
DN40 |
DN40 |
300 |
QGD-40/300B |
|
DN40 |
DN40 |
400 |
QGD-40/400B |
|
DN40 |
DN40 |
500 |
QGD-40/500B |
|
DN40 |
DN40 |
700 |
QGD-40/700B |
|
DN40 |
DN40 |
1000 |
QGD-40/1000B |
|
DN40 |
DN40 |
1500 |
QGD-40/1500B |
|
DN40 |
DN40 |
2000 |
QGD-40/2000B |
|
DN40 |
DN40 |
2500 |
QGD-40/2500B |
|
|
|
|
|
|
DN50 |
DN50 |
100 |
QGD-50/100B |
|
DN50 |
DN50 |
125 |
QGD-50/125B |
|
DN50 |
DN50 |
150 |
QGD-50/500B |
|
DN50 |
DN50 |
175 |
QGD-50/175B |
|
DN50 |
DN50 |
200 |
QGD-50/200B |
|
DN50 |
DN50 |
300 |
QGD-50/300B |
|
DN50 |
DN50 |
400 |
QGD-50/400B |
|
DN50 |
DN50 |
500 |
QGD-50/500B |
|
DN50 |
DN50 |
700 |
QGD-50/700B |
|
DN50 |
DN50 |
1000 |
QGD-50/1000B |
|
DN50 |
DN50 |
1500 |
QGD-50/1500B |
|
DN50 |
DN50 |
2000 |
QGD-50/2000B |
|
DN50 |
DN50 |
2500 |
QGD-50/2500B |
|
|
|
|
|
|
DN80 |
DN80 |
100 |
QGD-80/100B |
|
DN80 |
DN80 |
125 |
QGD-80/125B |
|
DN80 |
DN80 |
150 |
QGD-80/800B |
|
DN80 |
DN80 |
175 |
QGD-80/175B |
|
DN80 |
DN80 |
200 |
QGD-80/200B |
|
DN80 |
DN80 |
300 |
QGD-80/300B |
|
DN80 |
DN80 |
400 |
QGD-80/400B |
|
DN80 |
DN80 |
500 |
QGD-80/500B |
|
DN80 |
DN80 |
700 |
QGD-80/700B |
|
DN80 |
DN80 |
1000 |
QGD-80/1000B |
|
DN80 |
DN80 |
1500 |
QGD-80/1500B |
|
DN80 |
DN80 |
2000 |
QGD-80/2000B |
|
DN80 |
DN80 |
2500 |
QGD-80/2500B |
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