Acid Corrosion Resistant Steel Pipe
The acid corrosion resistant steel pipe N-STEEL supplies is suitable for the usage in corrosive medium which contains H2S, CO2, H2S CO2,chloridion, etc. This high quality steel line pipe is made of clean steel with low content of sulfur and phosphorus. Thus, the content of residual elements and readily oxidized elements can be effectively controlled; the content and effect of alloy elements such as Cr, Mo, Ni, etc. in the steel can also be reasonably controlled.
In this case, this acid corrosion resistant steel pipe can enjoy special properties of the steel materials such as durability, corrosion resistance, mechanical property, hardness, breaking tenacity, fatigue resistance, weldability and crack arrest while it shows higher performance. Now, this acid proof pipe is great for not only surface gathering and transportation pipeline but also sea floor gathering and transportation pipeline.
Specifications of Acid Corrosion Resistant Steel Pipe
Standard: GB9711
Steel Grade: L245NCS, L290NCS, L320NCS, L360NCS, L390NCS, L415NCS, L450QCS, L485QCS, L555QCS
| Corrosion Resistant Test | Test Method | Solution | Specimen Size | Threshold Stress | Test Duration | Test Goal |
| HIC Test | NACE TM0284-2003 | A Solution | 100×20 ×T | - | 96h | CSR ≤2% CLR ≤15% |
| B Solution | CSR=0 CLR=0 CTR=0 | |||||
| SSC Test | NACE TM0177-2005 (A) | A or B Solution | ∮3.81 | SYMS ×72% | 720h | No Rupture |
| A or B Solution | ∮6.35 | SYMS ×80% | 720h | No Rupture | ||
| NACE TM0177-2005 (B) | A or B Solution | See note 3 below | SYMS ×80% | 720h | No Rupture |
Note:
1. Test method can be selected according to customer demands.
2. In HIC test, the wall thickness (T) is determined by the wall thickness of sampled steel pipe.
3. Standard bending test specimen size: Width: 4.57±0.13mm (0.180±0.005in); Thickness: 1.52±0.13mm (0.060±0.005in); Length: 67.3±0.13mm (2.65±0.05in)
