Seamless Steel Pipe for Hydraulic Prop

Grade and Manufacturing Specification of Seamless Steel Pipe for Hydraulic Prop
No. Grade Specification Executive Standard
Outer Diameter/mm Wall Thickness/mm Economical Length/m
1 20 10 ~ 127
42 ~ 114.3
73 ~ 180
68 ~ 260
168 ~ 368
318 ~ 720
1 ~ 20
3.5 ~ 12
4 ~ 22
10 ~ 55
6 ~ 42
14 ~ 120
6 ~ 12
6 ~ 12
6 ~ 12
6 ~ 12
6 ~ 12
4 ~ 12
GB/T17396 or Technical Protocol
2 35
3 45
4 27SiMn
5 30CrMnSi
6 30CrMnSiA
7 26MnNbTi
8 27SiMn 42 ~ 127
42 ~ 114.3
73 ~ 180
68 ~ 260
168 ~ 368
318 ~ 720
4 ~ 20
4 ~ 12
4 ~ 22
10 ~ 30
6 ~ 30
14 ~ 35
6 ~ 12
6 ~ 12
6 ~ 12
6 ~ 12
6 ~ 12
4 ~ 12
9 26MnNbTi
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