球墨鑄鐵管標準：鑄管外型尺寸標準及允許偏差值（見下表）：
球墨鑄鐵管的外型尺寸偏差值大小是球墨鑄鐵管合格的重要標志，這將嚴重的影響到球墨鑄鐵管的安裝，偏差值較大的導致部分管材無法正確安裝，造成施工不便，還可能造成跑冒漏水等情況，影響到工程質(zhì)量及工程進度。因此在生產(chǎn)的過程中要嚴格把控，大于允許尺寸范圍的球墨鑄鐵管不能出廠。
球墨鑄鐵管 外型尺寸允許偏差值表：
DN |
f |
t4 |
DE |
d2 |
d3 |
d5 |
d6 |
|||||||
標準 |
偏差 |
標準 |
偏差 |
標準 |
偏差 |
標準 |
偏差 |
標準 |
偏差 |
標準 |
偏差 |
標準 |
偏差 |
|
80 |
3.5 |
0 |
6 |
0 |
98 |
+1 |
123 |
+1 |
100.5 |
+1 |
119.1 |
+1 |
103.2 |
+2 |
-0.8 |
-0.5 |
-2.8 |
-1 |
-1 |
-1 |
-2 |
||||||||
100 |
3.5 |
0 |
6 |
0 |
118 |
+1 |
143 |
+1 |
120.5 |
+1 |
138.9 |
+1 |
123.4 |
+2 |
-0.8 |
-0.5 |
-2.8 |
-1 |
-1 |
-1 |
-2 |
||||||||
150 |
3.5 |
0 |
6 |
0 |
170 |
+1 |
195 |
+1 |
172.5 |
+1 |
190.6 |
+1 |
175.3 |
+2 |
-0.8 |
-0.5 |
-2.9 |
-1 |
-1 |
-1 |
-2 |
||||||||
200 |
4 |
0 |
7 |
0 |
222 |
+1 |
250 |
+1.5 |
224.5 |
+1.5 |
245.2 |
+1.5 |
227.8 |
+2 |
-0.8 |
-0.5 |
-3 |
-1 |
-1 |
-1 |
-2 |
||||||||
250 |
4 |
0 |
7 |
0 |
274 |
+1 |
301.5 |
+1.5 |
276.5 |
+1.5 |
296.9 |
+1.5 |
279.7 |
+2 |
-0.8 |
-0.5 |
-3.1 |
-1 |
-1 |
-1 |
-2 |
||||||||
300 |
4.5 |
0 |
8.5 |
0 |
326 |
+1 |
356.5 |
+1.8 |
328.5 |
+1.8 |
351.7 |
+1.8 |
332.1 |
+2 |
-0.8 |
-0.5 |
-3.3 |
-1 |
-1 |
-1 |
-2 |
||||||||
400 |
5 |
0 |
9.5 |
0 |
429 |
+1 |
462 |
+2.1 |
431.5 |
+2.1 |
457.2 |
+2.1 |
435.8 |
+2.5 |
-1 |
-0.5 |
-3.5 |
-1 |
-1 |
-1 |
-2.5 |
||||||||
500 |
5.5 |
0 |
11 |
0 |
532 |
+1 |
568 |
+2.4 |
534.5 |
+2.4 |
562.6 |
+2.4 |
539.4 |
+3 |
-1 |
-0.5 |
-3.8 |
-1 |
-1 |
-1 |
-3 |
||||||||
600 |
6 |
0 |
12 |
0 |
635 |
+1 |
673.4 |
+2.7 |
637.5 |
+2.7 |
668 |
+2.7 |
642.6 |
+3 |
-1 |
-0.5 |
-4 |
-1 |
-1 |
-1 |
-3 |
||||||||
700 |
7 |
0 |
18 |
0 |
738 |
+1 |
788 |
+3.5 |
740.5 |
+3.5 |
779.3 |
+3.5 |
745.8 |
+3.5 |
-1.2 |
-0.5 |
-4.2 |
-1 |
-1 |
-1 |
-3.5 |
||||||||
800 |
8 |
0 |
18 |
0 |
842 |
+1 |
894 |
+3.8 |
844.5 |
+3.8 |
885.9 |
+3.8 |
850 |
+3.8 |
-1.2 |
-0.8 |
-4.5 |
-1 |
-1 |
-1 |
-3.8 |
||||||||
球墨鑄鐵管允許偏差值表。
連云港萬城球墨鑄鐵管有限公司 （m.eostime.com.cn）