W.T壁厚
O.D外径
0.15-0.20
0.21-0.30
0.31-0.50
0.60-0.80
0.90-1.20
1.30-1.80
1.90-3
3.50-4
4-10
2.5-5
6-10
11-15
16-20
20-25
25-35
35-50
50-100
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