Product Category
Manufacturing & Processing Machinery > Machinery Accessories & Services
Trademark
I am a Buyer
OR
By clicking Sign in or logging in with Google or LinkedIn, I agree to the User Agreement and the Privacy Policy .
Business Type: Manufacturer
Main Products:cold drawn tubecold rolled tube
ID:21060452507
Category: Manufacturing & Processing Machinery Machinery Accessories & Services
MOQ:5.00 Ton(s)
honed steel tubesteel tubeseamless honed tube
L/CT/T
1.Material Grade:20#(ck20,aisi1020),45#(ck45,aisi1045),st52(16Mn,Q345D),25Mn(STKM13CSt52 Hydraulic Cylinder using Cold drawn Seamless pipe-T),27SiMn and so on
2. Size range: OD: 30-250mm WT: 2-30mm
3. ID tolerance: H8, H9, and H10
4. Surface roughness: Ra 0.2— 0.8μm
5. Final supply condition: cold drawn and stress-relieved (BK+S), BK, NBK GBK
6. Machining allowance: 0.5-1.5mm
7. Wall thickness: 10%×ID
OD | GB/T3639 | DIN2391 (EN10305) | Our Tolerance | Best Quality | |
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 | |
160mm-230mm | ±0.50mm | ±0.50mm | ±0.40mm | ||
Tolerance in WT | ±0.12mm | ±0.10mm | ±0.05mm | ±0.03mm | |
PROCESS | |||||
Process | Diameter | Length | |||
Cold Rolled | 30-100mm | ≤10 m | |||
Cold Draw | 30-250mm | ≤10 m | |||
Honing | 40-500mm | ≤10 m | |||
Skived burnished | 40-400mm | ≤76m | |||
HONED OR SRB TUBE TOLERANCE | |||||
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 | ||
MECHANICAL PROPERTIES (we do much better than this)
Condition | Material Grade | T.S (MPa) lowest | Y.S (MPa) lowest | 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 |
Business Type:Manufacturer
Online Supplier