Cold Drawn/Rolled Astm 1020 Seamless Steel Pipe
Commodity name: Cold drawn/Rolled astm 1020 seamless steel pipe
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
About our service:
1.cargo track service during transporting and feedback service after cargo is loaded on board
2.flexible terms of payment by T/T and L/C
3.big discount for repeat customers
4.smooth delivering procedure
we can supply all kinds of steel pipes such as hot rolled seamless steel pipes ,cold drawn seamless steel pipes,honed pipes,cold drawn welded tubes(DOM tubes).
Welcome to inquiry at any time, we will try our best to serve you.

If any request, please feel free to contact us !
Tolerance in Dimension:
OD |
GB/T3639(GB8713) |
DIN2391(EN10305) |
Our Tolerence |
Best Quality |
4-30mm |
±0.10mm |
±0.08mm |
±0.05mm |
±0.02mm |
31-40mm |
±0.15mm |
±0.15mm |
±0.05mm |
±0.03mm |
41-50mm |
±0.20mm |
±0.20mm |
±0.05mm |
±0.03mm |
51-60mm |
±0.25mm |
±0.25mm |
±0.08mm |
±0.03mm |
61-70mm |
±0.30mm |
±0.30mm |
±0.10mm |
±0.05mm |
71-160mm |
±0.30mm |
±0.30mm |
±0.10mm |
±0.05mm |
Tolerance in WT |
±0.12mm |
±0.10mm |
±0.05mm |
±0.03mm |
|
||||
Process |
Diameter |
Length |
Precision |
Inner Hole Roughness |
Cold Rolled |
30-100mm |
≤12 m |
H8-H10 |
0.4-1.6 |
Cold Draw |
30-250mm |
≤12 m |
H8-H10 |
0.8-1.6 |
Honing |
40-500mm |
≤12 m |
H8-H9 |
0.4-0.8 |
Rolling |
40-400mm |
≤7 m |
H8 |
0.4 |
|
|
|
|
|
Inner Diameter |
H8 |
H9 |
H10 |
|
30mm |
±0.033 |
±0.052 |
±0.084 |
5-30mm |
30-50mm |
±0.039 |
±0.062 |
±0.100 |
±0.080 |
50-80mm |
±0.046 |
±0.074 |
±0.120 |
|
80-120mm |
±0.054 |
±0.087 |
±0.140 |
|
120-180mm |
±0.063 |
±0.100 |
±0.160 |
|
180-250mm |
±0.072 |
±0.115 |
±0.185 |
|
250-315mm |
±0.081 |
±0.130 |
±0.210 |
|
315-400mm |
±0.089 |
±0.140 |
±0.230 |
|
hydraulic cylinder tube st52 din2391
Mechanical Properties:
Condition |
Materail Grade |
T.S (MPa) |
Y.S (MPa) |
Elongation(%) |
BKS |
ST35 (10#) |
≥420 |
≥315 |
≥14 |
BKS |
ST45(20#) |
≥520 |
≥375 |
≥12 |
BKS |
ST52(16Mn) |
≥580 |
≥420 |
≥10 |
GBK |
ST35 (10#) |
≥315 |
|
≥35 |
GBK |
ST45(20#) |
≥390 |
|
≥32 |
GBK |
ST52(16Mn) |
≥490 |
|
≥30 |
NBK |
ST35 (10#) |
340-470 |
≥235 |
≥32 |
NBK |
ST45(20#) |
440-570 |
≥255 |
≥30 |
NBK |
ST52(16Mn) |
490-630 |
≥335 |
≥28 |
Application:
hydraulic cylinder tube st52 din2391 widely used in hydraulic system with precision steel tube, injection molding machine with precision steel tube, hydraulic press with precision steel tube, shipbuilding with steel tube, EVA foaming, hydraulic machinery, hydraulic cutting machine, shoe making machinery, hydraulic equipment, high pressure tubing, hydraulic tubing, card sets of joints, pipe joints, rubber machinery, forging machinery, casting machinery, engineering machinery, automotive high pressure steel pipe concrete pump, sanitation vehicle, automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, the internal combustion engine, air compressor, construction machinery, forestrymachinery, etc.
About our service:
1. Cargo track service during transporting and feedback service after cargo is loaded on board
2. Flexible terms of payment by
3. Big discount for repeat customers
4. Smooth delivering procedure
5. Payment Terms: T/T , L/C And so on.
If there is any Question, please feel free to send u
Send Inquiry to This Supplier
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