Automotive Precision Steel Tube En10305-1 6 - 350 Mm OD Max 12000mm Length
Precision Automotive Steel Tubes En10305-1 Ready to Honed steel pipes
Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm
Standard: EN10305-1 ASTM A519 GB/T3639 DIN2391 JIS G3445
Material:E235/ SAE1020/ SAE 1045 /10 # 20# 45#/ /DIN ST52/STKM 11A /STKM12B
Straightness:1/1000m
Tolerance: OD≤0.08mm WT:≤+/-0.15
Improve the precision with method: Cold drawn/DOM
Product Feature of precision cylinder 1020 honed steel pipe and tube:
1.High precision (can cut the costs of machining) .
2.Excellent surface finish
3.Good mechanical performance (Aneal ,Bright Anealing,QT heatment on steel tubes to reach customers' Mechanical requsts. )
| Chemical composition %(Max) | C | Si | Mn |
P |
S |
| E235 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 |
| SAE1020 | 0.18-0.23 | | 0.30-0.60 | 0.04 | 0.05 |
| SAE 1045 | 0.43-0.50 | | 0.60-0.90 | 0.04 | 0.05 |
| 10 # | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 |
| 20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.035 | 0.035 |
| 45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | 0.035 | 0.035 |
| St52 | 0.22 | 0.55 | 1.6 | 0.25 | 0.025 |
| STKM 11A | 0.12 | 0.35 | 0.6 | 0.04 | 0.04 |
| STKM12B | 0.20 | 0.35 | 0.6 | 0.04 | 0.04 |
| 1.+C /BK | No heat treatment after final cold drawing process. |
| 2.+LC/BKW | After the final heat treatment there's a suitable drawing pass. |
| 3.+SA/BKS | After the final cold drawing process there's a stress relief heat treatment in controlled atmosphere. |
| 4.+A/GBK | After the cold drawing process the tubes are annealed in a controlled atmosphere. |
| 5.+N/NBK | After the final cold drawing operation the tubes are normalized in a controlled atmosphere. |
Annealing /+A/GBK Bright Annealing/+N/NBK
Items & Condition of precision hot rolled steel tube
Delivery: 30-45days
Payment : T/T. LC.Alibaba Tade Assurance Order
Packaging: In Hexagonal bundles ,Wooden boxes packaging.
Quantity tolerance: +/-10%
Marks on pipes(tubes): Standard,Steel Grade, Size, Heat No.( or at the buyer's option).
Mill Test Certificate:EN10204 3.1
. Automotive components. Tubes for structural applications
. Standard mechanical tubing
. Hydraulic Cylinder Applications
. Heavy Equipment And Agriculture
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