S355JOH hollow section tubes offer various features including fire-resistant properties, high sectional properties, uniform mechanical properties, high compression capacity, suitable for low-temperature applications, and many more. Before dispatch of the product to the client, it is tested under various tests and is fully certified with standard forms. These hollow sections are available in many forms such as circular, rectangular, and square shapes. These hollow section pipes are suitable for the galvanizing process.
This Rectangular Hollow Section is obtainable through means of tailored solutions as per the drawings and designs gave up by the clients. This grade of hollow circular tube is mainly used in critical applications and is highly cost-effective. This EN 10219 S355J0H Rectangular Hollow Section is having commercial features through means of exceptional performances and the latest technology for meeting all budgets. The producers no doubt are ensuring that the item is produced by using the best quality raw substances.
Why choose tuspipe?
Since 1998, Tianjin United Steel Pipe Co., Ltd (TUSPIPE) has been committed to supplying high-quality line pipes.
With over 500,000 tons annual production capacity, the company serves various fields and industries, such as oil & gas exploitation and transmission, ship & auto-building, water & electricity, environmental protection, mechanical engineering, infrastructure construction and etc.
TUSPIPE places a premium on product quality and rigorous product quality control. In order to maintain good product quality, the company has established a Test & Inspection Center since 2004. With a series of state-of-the-art tests and inspection equipment, the test & inspection center is able to perform the tensile tests, hydro tests, impact tests, DWTT, etc.
Designation for EN 10219 S355J0H Steel Grade
- 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
Dimensions and Sizes of EN10219 S355J0H Pipe
|DN||O. D.||W. T.|
Weldability of EN 10219 S355J0H Pipe
This European standard only allows for the use of weldable steel. EN 1011-1 and EN 1011-2 specify the critical parameters for the welding of the products covered by this European standard.
While welding these materials, the primary worry is the development of cold cracking in the welded zone as the product’s thickness, strength level, and CEV grows. Cold cracking happens for a variety of reasons:
- Enhanced diffusible hydrogen concentrations in the weld metal;
- Brittle structure in the heat-affected zone;
- High tensile stress concentrations in the welded joint
Chemical Composition % of Steel S355J0H (1.0547): EN 10219
|Designation||Type of deoxidation||Sub Grop||C % max. Nominal thickness(mm)||Si % max.||Mn % max.||P % max.||S % max.||N % max.|
|According to EN10219-1 and lC 10||According to EN10219-1||≤40||＞40≤65|
|1) The deoxidation methods are designated as follows: a) FN = Rimming steel not permitted b) (e.g.min.0.020% total Al, or 0.015% soluble Al). 2) QS-quality steel. 3) It is permissible to exceed the specified values provided that for each increase of 0.001%N the P max content will be reduced by 0.005%, the N content of the ladle analysis, however, shall not be more than 0.012% 4) The max. value for nitrogen does not apply if the chemical composition shows a minimum total Al content of0.020% with a minimum AL/N ratio of 2:1, or if sufficient other N-binding elements are present. The N-binding elements shall be recorded in lnspection Document.|
Mechanical Properties for S355J0H Non-alloy Structural Steel
|Designation||Minimum Yield Strength REh in N/mm2||Tensile Strength Rm in N/mm2||Minimum percentage elongation L0-5,65√S0||Impact properties|
|Steel Name||Steel number||Nominal thickness in mm||Nominal thickness in mm||Longitudinal||Transverse||Test Temperature||Minimum average absorbed energy(J)for standard test pieces|
|≤16||＞16≤40||＞40≤65||＜3||≥3≤65||Nominal thickness in mm|
Longitudinal values. Transverse values are 2 % lower.
For thicknesses < 3 mm, see 9.2.2.
The impact properties are verified only when Option 1.3 is specified.
For impact properties for reduced section test pieces see 6.6.2.
This value corresponds to 27J at -30 ℃.
Manufacturing Tolerances of EN 10219 S355J0H Pipe
|Characteristic||Round Hollow Sections||Square and Rectangular Hollow Sections|
|Outside Dimension||± 1% with min ± 0.5mm and max ± 10mm||± 1% with min of ± 0.5mm|
|Thickness (T)||T≤5mm: ±10%||T≤5mm: ±10%|
|T>5mm: ± 0.5mm||T>5mm: ± 0.5mm|
|Convexity||–||Max .8% with min 0.5mm|
|Squareness of side||–||90° ± 1°|
|External Corner Profile||–||T≤6mm: 1.6T to 2.4T|
|–||6<T≤10mm: 2.0T to 3.0T|
|–||T,10: 2.4T to 3.6T|
|Twist||–||2mm plus 0.5mm/m|
|Straightness||0.2% of total||0.15% of total|
|Mass||±6% on individual length|
Inspection and Testing of EN 10219 S355J0H Hollow Sections of Non-alloy Steels
EN 10219 S355J0H 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.|
Marking of EN10219 S355J0H
Except as provided for in EN10219 10.2 for hollow sections which are bundled, each S355J0H section shall be marked by suitable and durable methods such as painting, stamping, adhesive labels, or attached tags with the following:
— the steel designation e.g., EN 10219-S355JOH;
— the manufacturer’s name or trademark;
— in the case of specific inspection: an identification number, e.g., order number, which permits the correlation of the product or delivery unit to the related document;
— the mark of the external inspection representative (where applicable).
When the items are provided bundled, the EN10219 10.1 marking must be on a label that is firmly affixed to the bundle.