High Precision Seamless Steel Pipe E355 Hydraulic Cylinder EN10305-1 E355 E235
1.Basic information of precision seamless steel pipe:
Standard:EN10305-1,DIN2391
Type: Seamless Cold-Drawn
Application:honed steel tubes , oil cylinder, motorcycle, auto industry,etc
Section Shape: Round
Technique: Cold Drawn
Material: E235,E355,E215
OD: 5-420 mm
WT: 0.5-50 mm
Length: Max 12000mm
Additional Info:
Packaging: Anti rust, woven bags with two slings
Transportation: Ocean,Land,Air
Certificate: ISO9001,ISO14001,TS16949
Port: Shanghai,Ningbo
2.Production process:
Raw material---inspection chemical analysis,physical performance, sizes---cutting---chamfer grinding(deburring)---pickling---saponification-cold drawn/cold rolled---straightening---cleaning(oil removal)---eddy current testing---bright heat treatmeny(NBK)---straightening---dimensional accuracy and surface testing---eddy current testing---physical performance---surface treatment, galvanized, army green passivated---cleaning and packing
3.Chemical analysis of precision seamless steel pipe:
| Steel Tube | C | Si | Mn | P | S | Al |
| E215 | 0.1 | 0.05 | 0.7 | 0.025 | 0.025 | 0.025 |
| E235 | 0.17 | 0.35 | 1.2 | 0.025 | 0.025 | - |
| E355 | 0.22 | 0.55 | 1.6 | 0.025 | 0.025 | - |
4.Main feature of our EN10305-1 precision seamless steel pipe:
high precision
excellent surface
No scale, no debris
Plain end
Inside surface cleaning
good straightness
black phosphating
5.Delivery condition:
| BK (+C) Cold finished/hard (cold finished as drawn) | No heat treatment after the last cold forming process. |
| BKW (+LC) Cold finished/soft (lightly cold worked) | After the last heat treatment there is a light finishing pass (cold drawing). |
| BKS (+SR) Cold finished/stress relieve annealed. | After the final cold forming process the tubes are stress relieve annealed. |
| GBK (+A) Annealed | After the final cold forming process the tubes are annealed in a controlled atmosphere |
| NBK (+N) Normalized. (Mainly focus on) | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere |
6.Precision seamless steel pipe product show:
7.Packing method
FAQ
Q: Are you trading company or manufacturer ?
A: A professional steel pipes materials inventor, manufacturer and solution provider
Q: How long is your delivery time?
A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, and it is according to quantity.
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge but you need to pay the cost of freight.
Q: What is your terms of payment ?
A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance , balance before shippment.
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