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Specifications
1.Grade:10#,20#.35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,ck45,St45,St52etc2.ID:30-250mm
3.BKS honed carbon steel tube
Commodity name: Precision honed russian standard steel pipe
Technical parameter:
1.Raw material:10#,20#,35#,45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020,Aisi1045,st35,St45,St52etc
2.ID:30-250mm
3.ID tolerance:H8,H9
4.Surface roughness:Ra 0.02— 0.4μm
5. Final supply condition:cold drawn and stress-relieved(BK+S)
6. Machining allowance:0.5-1.5mm
7.Wall thickness:10%×ID
Dimensions tolerance
OD(mm) |
ID (mm) |
Tolerance |
||||
OD (mm) |
ID (mm) |
Wall thickness deviation (mm) |
Ovality (mm) |
Curvature(mm/m) |
||
40-74 |
30-65 |
±.01 |
-0.3,-0.5 |
≤0.5 |
≤0.1 |
0.3 |
74-98 |
65-85 |
±.01 |
-0.4,-0.6 |
≤0.5 |
≤0.15 |
0.3 |
100-116 |
85-100 |
±.02 |
-0.4,-0.6 |
≤0.6 |
≤0.15 |
0.3 |
124-134 |
110-115 |
±.02 |
-0.6,-0.8 |
≤0.6 |
≤0.20 |
0.3 |
140-158 |
120-135 |
±.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
165-176 |
140-150 |
±.02 |
-0.7,-0.9 |
≤0.8 |
≤0.20 |
0.3 |
188-203 |
160-180 |
±.02 |
-0.7,-0.9 Honed |
≤0.8 |
≤0.20 |
0.3 |
Tolerance on ID
No. |
Inside diameter(mm) |
ID machining allowance(mm) |
1 |
50-80 |
0.5-0.8 |
2 |
81-125 |
0.7-1.1 |
3 |
125-200 |
0.9-1.2 |
4 |
200-250 |
1-1.5 |
Other dimension can be customized | ||
Commercial length
No. |
ID Min.(mm) |
Length(mm) |
1 |
50 |
700—2000 |
2 |
63 |
700—3000 |
3 |
80 |
700—4000 |
4 |
>90 |
700—6000 |
Other dimension can be customized | ||
Delivey conditions:
- Standard packing with plastic caps and strapped bundles.
- Commercial length 2000~10500mm,custom lengths upon request
- Surface protection
we can supply all kinds of seamless steel pipes such as hot rolled seamless steel pipe,cold drawn seamless steel pipe,honed tubes,cold drawn welded tubes(DOM tubes).
Management System Certification:
Production Process:
- Pretreatment : Acid cleaning- Parkerizing
- Cold drawn/cold rolled
- Annealing furnace—— stress-relieving (+SR)
- Straightener—— Straightening/ Leveling
Dimension inspecting
- Sawing off not good parts
- Lathe
- Surface Polishing
CNC Skiving Roller Burnishing Machine
- Finished honed tube
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