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EN 10305-4 E355 Precision Seaml
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EN 10305-1 E355 Precision Seamless cold drawn tubes
EN 10305-1 E355 Steel tubes for precision applications - Technical delivery conditions - Part 1: Seamless cold drawn tubes
EN 10305-1 E355 Precision Seamless cold drawn tubes Quick Details
Company Name: Beite steel pipe
Country/Region: China
Material：E355
FOB Price: US $1500-3000 / Ton | 1 Ton/Tons (Min. Order)
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package：Standard export package,suit for all kinds of transport, or as required
EN 10305-1 E355 Precision Seamless cold drawn tubes Dimensional Range & Specification
Outside Diameter：4mm-260mm
Wall thickness：0.5mm——25mm
Length：6000mm、12000m or specified length as required.
EN 10305-1 E355 Precision Seamless Cold Drawn Tubes
Standard:EN 10305-1
EN 10305-1 E355 for seamless cold drawn steel tubes of circular cross section for precision applications with specified outside diameter D ≤ 380 mm.
Tubes according to the EN 10305-1 are characterized by having precisely defined tolerances on dimensions and a specified maximum surface roughnes
Table 1 — Delivery conditions
| Designation | Symbol a | Description |
| Cold drawn / hard | +C | No final heat treatment after final cold drawing. |
| Cold drawn / soft | +LC | Final heat treatment is followed by a suitable drawing pass (limited reduction of area) |
| Cold drawn and stress relieved | +SR | After final cold drawing the tubes are stress relieved in a controlled atmosphere. |
| Soft annealed | +A | After final cold drawing the tubes are soft annealed in a controlled atmosphere |
| Normalized | +N | After final cold drawing the tubes are normalized in a controlled atmosphere. |
| a:In accordance with EN 10027–1 | ||
Manufacturing process
Tube manufacture and delivery conditions
The tubes shall be manufactured from hot finished seamless hollows by cold drawing.
The tubes shall be supplied in one of the delivery conditions given in Table 1.
Chemical composition of EN 10305-1 E355 Precision Seamless cold drawn tubes
| Steel grade | % by mass | ||||||
| Steel name | Steel number | C max. | Si max. | Mn max | P max. | S ,a max | Al,total b min |
| E355 | 1.0580 | 0,22 | 0,55 | 1,60 | 0,025 | 0,025 | 0,020 |
Mechanical properties of EN 10305-1 E355 Precision Seamless cold drawn tubes
| Steel grade | Minimum values for the delivery condition a | ||||||||||||
| +C b | +LC b | +SR | +A c | +N | |||||||||
| Steel name | Steel number | R m (MPa) | A % | R m (MPa) | A % | R m (MPa) | R eH (MPa) | A % | R m (MPa) | A % | R m (MPa) | R eH d (MPa) |
A % |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450 e | 10 | 450 | 22 | 490 to 630 | 355 | 22 |
Summary of testing
Chemical analysis
Tensile test
Dimensional inspection
Visual examination
Flattening test or drift expanding test
Roughness measurement
NDT on longitudinal imperfections
NDT for verification of leak tightness
Factory Photo
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