Commodity name: Precision seamless steel tube pipe
1.Grade: :20#.45#,Q345,16Mn,25Mn,27SiMn,42CrMo,Aisi1020/1045,st52,st45 etc
2.ID:50-250mm
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
Processing |
Cylinder Diameter |
Straightness |
Size Accuracy |
W.T/mm |
Inner Bore Roughess |
Cold drawn |
ID30-250 |
0.3 |
H9-H11 |
±10% |
0.4~1.6um |
Honed tube |
ID50-250 |
0.3 |
H7-H9 |
±10% |
Mechanics performance
Material |
Tensile strength |
Yield strength |
Elongation |
Hardness |
Ck20/20#/AISI1020 |
>520 N/ mm2 |
>375 N/mm2 |
>15% |
>85HB |
Ck45/45#/AISI1045 |
>600 N/ mm2 |
>520 N/ mm2 |
>15% |
>85HB |
ST52/16Mn/Q345D |
>600 N/ mm2 |
>520 N/ mm2 |
>15% |
>85HB |
25Mn/STKM 13C-T |
>600 N/ mm2 |
>530 N/ mm2 |
>15% |
>85HB |
Dimension tolerance
ID size |
ID deviation (mm) |
|||
H7 |
H8 |
H9 |
H10 |
|
30 |
+0.021 0 |
+0.033 0 |
+0.052 0 |
+0.084 0 |
>30~50 |
+0.025 0 |
+0.039 0 |
+0.062 0 |
+0.100 0 |
>50~80 |
+0.030 0 |
+0.046 0 |
+0.074 0 |
+0.120 0 |
>80~120 |
+0.035 0 |
+0.054 0 |
+0.087 0 |
+0.140 0 |
>120~180 |
+0.040 0
|
+0.063 0 |
+0.100 0 |
+0.160 0 |
>180~250 |
+0.046 0 |
+0.072 0 |
+0.115 0 |
+0.185 0 |
>250~315 |
+0.052 0 |
+0.081 0 |
+0.130 0 |
+0.210 0 |
>315~400 |
+0.0527 0 |
+0.089 0 |
+0.140 0 |
+0.230 |
Delivey conditions:
- Standard packing with plastic caps and strapped bundles.
- Commercial length 2000~10500mm,custom lengths upon request
- Surface protection
Seamless Steel Pipe mills, volume should go through continuous annealing (CAPL unit) to eliminate cold hardening and rolling stress, or batch annealing reach the best selling high precision cold drawn seamless steel pipe for India,Pakistan and Vietnam mechanical properties of the corresponding standard specifies. Seamless Steel Pipe surface quality, appearance, dimensional accuracy best selling high precision cold drawn seamless steel pipe for India,Pakistan and Vietnam better than hot-rolled plate, and right-rolled thin product thickness is about 0.18mm, so the majority of users favor.
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