EN 10219
EN 10219
The European Norm EN 10219 regulates requirements for cold-formed welded structural pipes made of non-alloy and fine-grain steels without heat treatment. These requirements include dimensions, shapes, delivery conditions, and permissible deviations from dimensional and form tolerances, as well as mechanical property requirements. The standard applies to welded pipes used for the construction of steel structures and for the general purpose of civil engineering, including pipework for the transportation of fluid and other media. This standard also applies to welded pipes used in the construction of pipelines for the transportation of fluids such as oil, gas, and water. The standard is also applicable to welded pipes used in the construction of process piping, power piping, and ductwork. Part 1 includes the technical delivery conditions of EN 10219 structural pipes, and part 2 specifies the tolerance, dimensions and sectional properties of these pipes.
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Dimensions and Sizes of EN 10219 Pipe
| DN | O. D. | W. T. | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | mm | SCH5S | SCH10S | SCH10 | SCH20 | SCH30 | SCH40 | SCH60 | SCH80 | SCH100 | SCH120 | SCH140 | SCH160 | Sth | XS | XXS | |
| 50 | 2″ | 60.3 | 1.65 | 2.77 | – | – | – | 3.91 | – | 5.54 | – | – | – | 8.74 | 3.91 | 5.54 | 11.07 |
| 65 | 2 1/2″ | 73 | 2.11 | 3.05 | – | – | – | 5.16 | – | 7.01 | – | – | – | 9.53 | 5.16 | 7.01 | 14.02 |
| 80 | 3″ | 88.9 | 2.11 | 3.05 | – | – | – | 5.49 | – | 7.62 | – | – | – | 11.13 | 5.49 | 7.52 | 15.24 |
| 90 | 3 1/2″ | 101.6 | 2.11 | 3.05 | – | – | – | 5.74 | – | 8.08 | – | – | – | – | 5.74 | 8.08 | – |
| 100 | 4″ | 114.3 | 2.11 | 3.05 | – | – | – | 6.02 | – | 8.58 | – | 11.13 | – | 13.49 | 6.02 | 8.56 | 17.12 |
| 125 | 5″ | 141.3 | 2.77 | 3.4 | – | – | – | 6.55 | – | 9.53 | – | 12.7 | – | 15.88 | 6.55 | 9.53 | 18.05 |
| 150 | 6″ | 168.3 | 2.77 | 3.4 | – | – | – | 7.11 | – | 10.97 | – | 14.27 | – | 18.26 | 7.11 | 10.97 | 21.95 |
| 200 | 8″ | 219.1 | 2.77 | 3.76 | – | 6.35 | 7.04 | 8.18 | 10.31 | 12.7 | 15.09 | 18.26 | 20.62 | 23.01 | 8.18 | 12.7 | 22.23 |
| 250 | 10″ | 273.1 | 3.4 | 4.19 | – | 6.35 | 7.8 | 9.27 | 12.7 | 15.09 | 18.26 | 21.44 | 25.4 | 28.58 | 9.27 | 12.7 | 25.4 |
| 300 | 12″ | 323.9 | 3.96 | 4.57 | – | 6.35 | 8.38 | 10.31 | 14.27 | 17.48 | 21.44 | 25.4 | 28.58 | 33.32 | 9.53 | 12.7 | 25.4 |
| 350 | 14″ | 355.5 | 3.96 | 4.78 | 6.35 | 7.92 | 9.53 | 11.13 | 15.09 | 19.05 | 23.83 | 27.79 | 31.75 | 35.71 | 9.53 | 12.7 | – |
| 400 | 16″ | 406.4 | 4.19 | 4.78 | 6.35 | 7.92 | 9.53 | 12.7 | 16.66 | 21.44 | 26.19 | 30.96 | 36.53 | 40.49 | 9.53 | 12.7 | – |
| 450 | 18″ | 457.2 | 4.19 | 4.78 | 6.35 | 7.92 | 11.13 | 14.27 | 19.05 | 23.83 | 39.36 | 34.93 | 39.67 | 45.24 | – | – | – |
| 500 | 20″ | 508 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | 15.09 | 20.62 | 26.19 | 32.54 | 38.1 | 44.45 | 50.01 | – | – | – |
| 550 | 22″ | 558.8 | 4.78 | 5.54 | 6.35 | 9.53 | 12.7 | – | 22.23 | 28.58 | 34.93 | 41.28 | 47.63 | 53.98 | – | – | – |
| 600 | 24″ | 609.6 | 5.54 | 6.35 | 6.35 | 9.53 | 14.27 | 17.48 | 24.61 | 30.96 | 38.89 | 46.02 | 52.37 | 59.54 | – | – | – |
Steel Grade of EN 10219
– Designation for Non-alloy Steel Structural Hollow Sections:
- The number of this European Standard (EN 10219 specification);
- The capital letter S for structural steel;
- The indication of the minimum specified yield strength for thickness ≤16mm is expressed in N/mm2;
- The capital letters JR for the qualities with specified impact properties at room temperature;
- The capital letter J and a number 0 or 2 for the qualities with specified impact properties at 0℃ and -20℃ respectively;
- The capital letter H indicates hollow sections
– Example with EN 10219 S275JOH:
- EN 10219 – Number of the European Standard
- S – Structural steel
- 275 – Minimum yield strength (N/mm2) for thickness not greater than 16mm
- J0 – Impact properties, 27J minimum at 0℃
- H – Hollow section
Weldability of EN 10219 Pipe
Weldable steels are specified in this European standard. EN 1011-1 and EN 1011-2 specify the main standards for welding products under this European standard.
When welding these products, the greatest danger is the development of cold cracking in the welded zone as the product thickness, strength level, and CEV rise. Cold cracking is a result of a combination of the following factors:
- elevated diffusible hydrogen levels in the weld metal;
- a brittle structure in the heat-affected zone;
- and large tensile stress concentrations in the welded joint
Chemical Composition Requirement of EN 10219 Pipe
Please check the table below for the chemical composition requirement of EN 10219 structural hollow sections, thickness ≤ 40mm.
| Steel Grade | Ytpe of De-oxidation a | % by Mass, Maximum | ||||||
|---|---|---|---|---|---|---|---|---|
| Steel Name | Steel Number | C | Si | Mn | P | S | N b | |
| S235JRH | 1.0039 | FF | 0.17 | – | 1.40 | 0.040 | 0.040 | 0.009 |
| S275J0H | 1.0149 | FF | 0.20 | – | 1.50 | 0.035 | 0.035 | 0.009 |
| S275J2H | 1.0138 | FF | 0.20 | – | 1.50 | 0.030 | 0.030 | – |
| S355J0H | 1.0547 | FF | 0.22 | 0.55 | 1.60 | 0.035 | 0.035 | 0.009 |
| S355J2H | 1.0576 | FF | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | – |
| S355K2H | 1.0512 | FF | 0.22 | 0.55 | 1.60 | 0.030 | 0.030 | – |
| a   The deoxidation method is designated as follws:     FF: Fully killed steel containing nitrogen binding elements in amounts sufficient to bind available nitorgen (e.g. min. 0.020% total Al or 0.015% shluble Al). | ||||||||
| b   The maximum value for nitrogen dose not apply if the chemical composition shows a minimum total Al content of 0.020% with a minimum Al/N ratio of 2:1, or if sufficient other -binding elements are present. The N-binding elements shall be reocrded in the Inspection Document. | ||||||||
Mechanical Properties of EN 10219 Pipe
The table below lists the required mechanical properties for EN 10219 structural hollow sections.
| Steel Grade | Minimum Yield Strength ReH MPa | Tensile Strength Rm MPa | Minimum elongation Ad % | Minimum Impact Energy KVe J | |||||
|---|---|---|---|---|---|---|---|---|---|
| Steel Name | Steel Number | Specified Thickness mm | Specified Thickness mm | Specified Thickness mm | at Test Temperature of | ||||
| ≤16 | > 16 ≤ 40 | <3 | ≥3 ≤40 | ≤40 | -20℃ | 0℃ | 20℃ | ||
| S235JRH a | 1.0039 | 235 | 225 | 360-510 | 360-510 | 24 b | – | – | 27 |
| S275J0H a | 1.0149 | 275 | 265 | 430-580 | 410-560 | 20 c | – | 27 | – |
| S275J2H | 1.0138 | 27 | – | – | |||||
| S355J0H a | 1.0547 | 355 | 345 | 510-680 | 470-630 | 20 c | – | 27 | – |
| S355J2H | 1.0576 | – | – | – | |||||
| S355K2H | 1.0512 | 40 f | – | – | |||||
| a      The impact properties are verified only when Option 1.3 is specified | |||||||||
| b      For thicknesses > 3 mm and section sizes D/T <  15 (round) and (B+H)/2T < 12.5 (square and rectangular) the minimum elongation is by 2.  For thicknesses ＞ 3 mm the minimum value for elongation is 17 %. | |||||||||
| c      For section size D/T < 15 (circular) and (B+H)/2T < 12.5 (square and rectangular) and minimum elongation is reduced by 2. | |||||||||
| d      For thicknesses < 3 mm  see 9.2.2. | |||||||||
| e      For impact properties for reduced section test pieces see 6.7.2 | |||||||||
| f      This value corresponds to 27J at -30℃ (see EN 1993-1-1). | |||||||||
Inspection of EN 10219 Hollow Sections of Non-alloy Steels
EN 10219 is tensile tested according to EN 10002-1 and Charpy impact tested according to EN 10045-1.
| Inspection Requirements | Inspection Frequency | |||
|---|---|---|---|---|
| Type of test | Non-specific inspection | Specific inspection | ||
| Mandatory tests | 1 | Cast analysis | One result per delivery item | One per cast |
| 2 | Tensile test | One result per delivery item | One per test unit ( b) | |
| 3 | Impact test for Qualities J2 and K2 only | Not applicable | One set per test unit (b) | |
| 4 | Surface condition and dimensions | – | – | |
| 5 | NDT of the weld | Not applicable | All products, full length | |
| Optional tests | 6 | Product analysis | Not applicable | One per test unit a |
| 7 | Cast analysis additional elements | Not applicable | See Option 1.2 | |
| 8 | Impact test for qualities JR and J0 | Not applicable | One set per test unit (b) | |
| b – Longitudinal or transverse samples at the discretion of the manufacturer. | ||||
INSPECTION OF EN 10219 HOLLOW SECTIONS OF Fine-grain Steels
| Inspection Requirements | Inspection Frequency | ||
|---|---|---|---|
| Type of test | Specific inspection | ||
| Mandatory tests | 1 | Cast analysis | One per cast |
| 2 | Tensile test | One per test unitF( b) | |
| 3 | Impact test | One set per test unit (b) | |
| 4 | Surface condition and dimensions | – | |
| Optional tests | 5 | NDT of the weld | All products, full length |
| 6 | Product analysis | One per test unit a | |
| b – Longitudinal or transverse samples at the discretion of the manufacturer. | |||
Marking of EN 10219
Each of the square and rectangular hollow sections shall be marked with the following information.
- Specification designation
- Grade letter
- Dimension
- Heat number
- Other customers requirement
