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Steel grades for Pipe piling

Pipe piles and tubular piles have many advantages, compared with other construction materials.

1. Easy and stable to connect with other steel materials and components
Tubular piles can connect with tubular piles themselves by different kind of interlocks, and also be connect with sheet piles, H beams, etc. This make pipe piles the most popular materials in constructions.
2.More easy transport handling
You can use truck to delivery, use bulk vessel to carry. Very easy to transport, no extra care is needed.
3. Good for the environment:
39 percent of all steel in China is recycled each year. 30% of steel is produced in facilities that use recycled materials ,which means they don’t emit CO2.This environmental consciousness is becoming a greater and greater concern across all industries.
4. Easily spliced into longer lengths or cut into shorter length.
Pipe piling can be produced in very long length, without butt welding.
5. Ideal for hard driving conditions, specially hard ground
Pipe piles perform better than most other materials in environments that experience a lot of shock and vibration. Its resistance to shock makes it a great choice for water mains under roadways and other transportation applications that face a lot of rolling and bouncing tires
6. High strength and good roundness
Pipe piling have very high tensile strength, which means pipe piling can withstand the more amount of pressure than other construction materials. A greater carrying capacity makes it more cost-effective.

API Steel Pipes

Steel grade according to EN10219-1 Minimum yield strength Reh (T≤16mm) N/mm2 Minimum yield strength Reh (16≤T≤40mm) N/mm2 Minimum ultimate tensile  strength Rm (3≤T≤40mm) N/mm2 Minimum elongation (T≤40mm) %
S235JRH 235 225 340-47- 22
S275JOH/J2H 275 265 410-560 20
S355JOH/JEH 355 345 490-630 20
S420MH 420 400 500-660 19
S460MH 460 440 530-720 17
         
Steel grade according to  API5L,PSL1 Minimum yield strength Reh N/mm2   Minimum ultimate tensile  strength Rm  N/mm2 Minimum elongation %
B 245   415 23
X42 290   415 23
X46 320   435 22
X52 360   460 21
X56 390   490 19
X60 415   520 18
X65 450   535 19
X70 485   570 17
1)PSL:Product Specification Level
2)T:Thickness
3)Depends on tensile test piece cross sectional area

European steel pipes

Steel grade according to EN10219-1 C Max% Mn Max  % P Max % S Max % Si Max % N Max % CEV Max %
S235JRH 0.17 1.40 0.045 0.045 - 0.009 0.35
S275JOH/J2H 0.20 1.50 0.040 0.040 - 0.009 0.40
S355JOH/JEH 0.22 1.60 0.040 0.040 0.55 0.009 0.45
S420MH 0.16 1.70 0.035 0.030 0.50 0.020 0.43
S460MH 0.16 1.70 0.035 0.030 0.60 0.025 -
               
Steel grade according to  API5L,PSL1 C Max% Mn Max  % P Max % S Max % Ti+V+Nb Max %    
B 0.26 1.20 0.030 0.030 0.15    
X42 0.26 1.30 0.030 0.030 0.15    
X46 0.26 1.40 0.030 0.030 0.15    
X52 0.26 1.40 0.030 0.030 0.15    
X56 0.26 1.40 0.030 0.030 0.15    
X60 0.26 1.40 0.030 0.030 0.15    
X65 0.26 1.45 0.030 0.030 0.15    
X70 0.26 1.65 0.030 0.030 0.15    


1) According to API 5L: For each reduction of 0.01% below the specified maximum carbon content, an increase of 0.05% above the specified maximum manganese content is permissible, up to a maximum of 1.50% for grade X42 to X52, 1.65% for X56 to X65 and 2.00% for X70
2)Unless otherwise agreed, the sum of the niobium and vanadium contents shall be ≤ 0.06 %.
3) Unless otherwise agreed

Dimensional tolerances for pipe piles

Standard Outside diameter D Wall Thickness T Straightness Out-of-roundness Mass Maximum weld bead height 
EN10219-2 +/-1% Max +/-10.0mm +/-1% Max +/-2.0mm 0.20% of total length +/-2%   +/-6%   T≤14.2mm:3.5mm T >14.2mm:4.8mm
API5L ISO3183 ≤1422mm +/-0.5% ≤4.0mm <15.0mm:+/-10% ≥ 15.0 mm:+/-1.5mm 0.20% of total length D/t≤75 D<1422mm +/-1.5% ≤15.0mm +10% -3.5% T≤13.0mm:3.5mm T >13.0mm:4.8mm
>1422mm As agreed   Else As agreed  

 

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