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High-Integrity DN890 LSAW Conduits for Sour Gas Transmission Networks
Huayang's DN890 LSAW pipes utilizing API 5L X56MS steel provide the exceptional sulfide stress cracking resistance required for high-pressure sour service environments.
|
Technical Parameter |
Specification Value |
|
Material Grade |
API 5L X56MS (Sour Service) |
|
Compliance |
NACE MR0175 / ISO 15156 |
|
Yield Strength |
390 – 545 MPa (56,600 - 79,000 psi) |
|
Outer Diameter |
889.0 mm (DN890 / NPS 35) |
|
Weld Process |
Double-Sided LSAW (JCOE) |
This large-diameter piping solution ensures superior hydrogen-induced cracking (HIC) resistance and structural stability, safeguarding critical energy logistics in corrosive hydrogen sulfide atmospheres.
Advanced Metallurgical Reliability in Sour Hydrocarbon Logistics
Engineered for the rigorous demands of sour gas infrastructure, Huayang's DN890 API 5L X56MS pipes feature a specialized fine-grain steel body optimized for anti-sulfide corrosion. The 889mm LSAW sections are manufactured using the advanced JCOE cold-forming process, which allows for precise control over hardness levels and residual stresses-key factors in preventing Sulfide Stress Cracking (SSC). The material undergoes stringent metallurgical processing, including calcium treatment for inclusion shape control and low-sulfur/low-phosphorus chemistry to minimize the initiation of Hydrogen-Induced Cracking (HIC). As a premier industrial manufacturer, Huayang subjects each DN890 unit to rigorous NACE-standard corrosion testing and 100% automated ultrasonic evaluation of both the pipe body and the longitudinal weld. This provides a durable, high-integrity conduit that maximizes operational safety and prevents catastrophic failures in complex pipelines transporting high-concentration H2S and CO2 fluids.
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