One Of Hottest For Gas Pipe Line - Cold Formed Pipes, EN10219 S235JRH, S235J0H, S355JRH, S355J0H – Spiral
One Of Hottest For Gas Pipe Line - Cold Formed Pipes, EN10219 S235JRH, S235J0H, S355JRH, S355J0H – Spiral Detail:
Mechanical Property
| steel grade | minimum yield strength | Tensile strength | Minimum elongation | Minimum impact energy | ||||
| Specified thickness | Specified thickness | Specified thickness | at test temperature of | |||||
| <16 | >16≤40 | <3 | ≥3≤40 | ≤40 | -20℃ | 0℃ | 20℃ | |
| S235JRH | 235 | 225 | 360-510 | 360-510 | 24 | - | - | 27 | 
| S275J0H | 275 | 265 | 430-580 | 410-560 | 20 | - | 27 | - | 
| S275J2H | 27 | - | - | |||||
| S355J0H | 365 | 345 | 510-680 | 470-630 | 20 | - | 27 | - | 
| S355J2H | 27 | - | - | |||||
| S355K2H | 40 | - | - | |||||
Chemical Composition
| Steel grade | Type of de-oxidation a | % by mass, maximum | ||||||
| Steel name | Steel number | C | C | Si | Mn | P | S | Nb | 
| 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 follows: FF: Fully killed steel containing nitrogen binding elements in amounts sufficient to bind available nitrogen (e.g. min. 0,020 % total Al or 0,015 % soluble Al). b. The maximum value for nitrogen does 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 N-binding elements are present. The N-binding elements shall be recorded in the Inspection Document. | ||||||||
Hydrostatic Test
Each length of pipe shall be tested by the manufacturer to a hydrostatic pressure that will produce in the pipe wall a stress of not less than 60% of the specified minimum yield strength at room temperature. The pressure shall be determined by the following equation:
P=2St/D
Permissible Variations In Weights and Dimensions
Each length of pipe shall be weighed separately and its weight shall not vary more than 10% over or 5.5% under its theoretical weight, calculated using its length and its weight per unit length
The outside diameter shall not vary more than ±1% from the specified nominal outside diameter
Wall thickness at any point shall not more than 12.5% under the specified wall thickness
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 By Alice from kazakhstan - 2018.02.04 14:13
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 By Nicole from Sierra Leone - 2017.02.18 15:54
 By Nicole from Sierra Leone - 2017.02.18 15:54
               
                


