ASTM A106 gr.b cold drawn seamless tube
1.Grade:20#(ck20,aisi1020),45#(ck45,aisi1045),st52(16Mn,Q345D),25Mn(STKM13CSt52 Hydraulic Cylinder using Cold drawn Seamless pipe-T),27SiMn
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
Hydraulic pneumatic liner actuator standard/size/precise
| Processing the form | Cylinder diameter | Length | Straightness | Dimensional accuracy | Wall thickness | Inner hole roughness |
| cold drawn | 48~325 | ≤12m | 0.3~0.8mm/m | ±10% | 0.8~1.6µm | |
| honing | 48~325 | ≤10m | 0.3~0.8mm/m | H8~H9 | ±10% | 0.3~0.8µm |
| roling | 50~250 | ≤ 9m | 0.3~0.8mm/m | H7~H9 | ±10% | 0.01µm |
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 toleranc
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 |
Material range of YANTAI XINPENG
Steel Grade | ||
DIN | 1629 | ST 37 / 44 / 52 |
| 1630 | ST 37.4 / 44.4 / 52.4 |
| 2391-2 | ST 35 / 45 / 52 |
EN | 17204 | C22 – Ck 22 – Cm22 – |
| 17210 | C15 – Ck 15 – Cm 15 – 16MnCr5 |
| 10305-1 | E215/235/355/255 |
GB | 3639 | 10#, 20#, 16Mn, 45# |
ASTM | A 519 | 1010 |
| A179-A450 | A450 |
| A822-A450 | A450 |
BS | BS 6323 | CFS3 CFS4 CFS5 CFS6 CFS7 |
NFA | 49310 | TU 37 b |
Our Company
We are professional supplier of steel tubes, cold drawn steel tube, cold rolled steel tube,
cold drawn honed steel tube, cold drawn rolled honed tube, honed tube, SRB tube, hydraulic
cylinder pipe and so on.
Our Workshop
Our Company is equipped with JLB250T hydraulic cold drawn machine set,LD120 precision cold rolled machine set, multiple precision straightening machine,box heat treat furnaces(8000-10000mm), advanced CNC skived and roller burnished machine SRB-6000mm, several powerful honed machine, combined cold drawn, cold rolling, heat treatment, and SRB process to produce the best quality products.
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1.Transportation: By Sea
20' FCL (means the length than 5,800mm)
40' FCL (means the length than 11,800mm)
2.Bulk cargo (means the quantity is more than 200MT)
3.With regards to other length or quantity, it should be taken by clients themselves
4.Delivery time: 25-35days to the dispatch port after receipt of T/T or L/C at sight.
5.Optional: wooden box; caps; vanished coating.
6.Payment: T/T or L/C at sight, T/T 100% in advance (If order less than 3MT)
7.Price item: FOB, CFR, CNF, C&F, CIF
8.Origin: China
9.Third party inspection: BV, SGS, Lloyds. The Expense needs to stand by clients.
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1. 24hours service via phone ,wechat alibaba trade manager.
2. Good package and best container method.
3. Professional explanation with professional online service
4. Factory manufacturer can assure the best quality.
5. Good delivery time as 15-30 days .
6. 3 years product assurance after usuage.
7. Good quality process in our own factory,
each lot tube have their own 5 years'life card.
we always do our best to make deal with any clients, welcome to inquiry at any time!