E355 Steel Tubes manufacturer in India
The technical delivery conditions specified by EN 10297 apply to non-alloy as well as alloy steels seamless circular tubes. The tubes produced under standard EN 10297-1 are intended for use in both mechanical and general engineering applications. Like most English standards, the steels used in standard EN 10297 are designated on the basis of product application, or delivery condition. The designations of the steel grade for an EN 10297 Tube also makes a mention of its minimum yield strength. In the case of pipes belonging to grade en 10297-1 e355+ar, the letter E is a designation for steels applied in the manufacture of machine parts. And the term AR indicates that there is not heat treatment required for that particular steel grade. For instance, the minimum yield strength of bs en 10297-1 grade e355 is 355 N/mm2.
This standard calls for use of deoxidized or killed steel grades for the manufacture of E355 Steel Tubes. The outside diameter includes tolerance of the Out of roundness, whereas the eccentricity is included in the en 10297-1 tolerance on thickness. The delivery of these tubes is to be in square cut ended, and the ends are required to be free from excessive burrs. A visual inspection, when performed on the en 10297-1 e470, must be free of both external as well as internal surface defects. The standard permits removal of surface imperfections, via processes such as grinding or machining performed on the en 10297-1 e355 afforded that, after doing so - the tube thickness in the dressed area is not scarcer in comparison to the minimum wall thickness that has been specified.
Check EN 10297 Tube tolerance and price list
Composition Standard of EN 10297-1 Grade E355 Tubes
| Carbon | Silicon | Manganese | Phosphorous | Sulphur | Molybdenum | Nickel | Chromium | Copper | Others |
| max 0.22 | max 0.55 | max 1.60 | 0.03 | 0.035 | – | – | – | – | – |
| Steel grades | CHEMICAL COMPOSITION (LADLE ANALYSIS) | |||||||
| C% | Si% | Mn% max | P% | S% | ||||
| min | max | min | max | min | max | max | Max | |
| E235 | - | 0,17 | - | 0,35 | - | 1,20 | 0,030 | 0,035 |
| E275 | - | 0,21 | - | 0,35 | - | 1,20 | 0,030 | 0,035 |
| E355 | - | 0,22 | - | 0,55 | - | 1,60 | 0,030 | 0,035 |
| C35E | 0,32 | 0,39 | - | 0,40 | 0,50 | 0,80 | 0,035 | 0,035 |
| C45E | 0,42 | 0,50 | - | 0,40 | 0,50 | 0,80 | 0,035 | 0,035 |
Various types of EN 10297-1 Grade E355 Carbon Steel Seamless Tubes
BS EN 10297-1 e355+ar and e470 Carbon Steel Tube supplier
EN 10297-1 E470 Hot rolled steel pipe 82.5*5.6
EN 10297-1 1.7220 34CrMo4 Alloy Steel Hollow Bar
EN 10297-1 E235/E275/E355 /ASTM A106/A53 Gr.B E235 pipe
En 10297-1 42crmo4,30crmo4, alloy Steel Tube
BS/EN 10297-1 25CrMo4 cold drawn seamless steel pipe
DIN EN 10297-1 30crmo4 grade 1.7216 seamless steel pipe
EN 10297-1 E355 Hot rolled steel pipe 219.1*17.5
EN 10297-1 1.6511 36CrNiMo4 Alloy Seamless Steel Tube
EN 10297-1 41NiCrMo7-3-2 1.6563 Mechanical Alloy Seamless Steel Tube
EN 10297-1 Seamless Tubes Mechanical Characteristics
E235, E275, E355 Seamless circular steel tubes according to PN-EN 10297-1
| Yield Strength | Tensile Strength | Elongation A5 min | |||
| MPa min | ksi min | MPa min | MPa min | ksi min | Percentage |
| 490 | – | – | 20 | ||
| Minimum mechanical properties | ||||||||||||
| Pipe type | Steel grades | Delivery condition | Upper yield limit Re MPa | Tensile strength Rm MPa | Elongation A% |
|||||||
| Seamless circular steel tubes for mechanical and general engineering purposes E235, E275, E355, According to PN-EN 10297-1 | For T in mm | For T in mm | 1 | t | ||||||||
| <\= 16 | >16 <\=40 | >40 <\=65 | >65 <\=80 | >80 <\=100 | <\=16 | >16 <\=40 | >40 <\=65 | |||||
| E235 | +A lub+N | 235 | 215 | 205 | 195 | 360 | 360 | 360 | 340 | 340 | 25 | |
| E275 | +A lub+N | 275 | 255 | 245 | 235 | 410 | 410 | 410 | 380 | 380 | 22 | |
| E355 | +A lub+N | 354 | 345 | 315 | 295 | 490 | 490 | 410 | 470 | 470 | 20 | |
EN 10297-1 Gr E355 Tubes Equivalent Material
PN-EN 10297-1 Non-alloy and alloy steel tubes for precision applications
| DIN | EN | BS | NFA | ASTM | ASME |
| – | EN 10297-1 Grade E355 | – | – | – | – |
EN 10297-1 E355 Steel Tubes Inspection Standards
| Inspection and test type | Internal inspection and testing | Acceptance inspection and testing | |
| Mandatory tests | Ladle analysis | According to the manufacturer’s procedures | 1/per ladle |
| Tensile testing | According to the manufacturer’s procedures | 1/per tested batch | |
| Resilience testing | Not applicable | 1 set/ per tested batch | |
| Dimension verification | - | ||
| Visual inspection | |||
| Material identification for alloy steel tubes | Not applicable | Individual | |
| Additional tests | Tensile testing on samples after thermal processing | Not applicable | 1/ per ladle |
| Tensile testing | Not applicable | 1/ per tested batch | |
| Resilience testing | Not applicable | 1 set/ per tested batch | |
| Hardness range verification | Not applicable | According to a documented procedure | |
| Hardness testing | Not applicable | 1/ per tested batch | |
| Temper testing | Not applicable | 1/ per ladle | |
| Non-destructive testing in order to identify any discontinuities | Not applicable | Individual | |
| Tightness testing | Not applicable | Individual | |