Acid Corrosion Resistant Steel Pipe

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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

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%
HIC Test	NACE TM0284-2003	B Solution	100×20 ×T	-	96h	CSR=0 CLR=0 CTR=0
SSC Test	NACE TM0177-2005 (A)	A or B Solution	∮3.81	SYMS ×72%	720h	No Rupture
	NACE TM0177-2005 (A)	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)

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