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DN760 LSAW Welded Pipe in EN10217 P355NH for Pressure Systems
The EN10217 P355NH specification defines the mechanical integrity and thermal resilience required for large-diameter welded tubes, providing the essential safety and durability for high-pressure boilers and industrial steam distribution networks.
|
Technical Parameter |
Specification Detail |
|---|---|
|
Product Type |
LSAW (Longitudinal Submerged Arc Welded) |
|
Standard / Grade |
EN 10217-3 P355NH (1.0565) |
|
Nominal Diameter |
DN760 (30-inch / 762mm OD) |
|
Yield Strength (ReH) |
Minimum 355 MPa |
|
Tensile Strength (Rm) |
490 - 630 MPa |
|
Impact Energy |
40J at 0°C / 27J at -20°C |
Huayang's DN760 LSAW pipes leverage high-purity fine-grain steel and advanced JCOE molding technology, ensuring exceptional weld integrity and creep resistance for critical high-pressure energy transmission and thermal equipment infrastructure.
Precision Engineering for Pressure: Huayang's LSAW Solutions for P355NH Grade
Huayang Steel Pipe utilizes specialized longitudinal submerged arc welding (LSAW) production lines to manufacture DN760 EN10217 P355NH pipes, specifically engineered for the rigors of pressure equipment applications. By utilizing normalized fine-grain steel with a restricted carbon content (max 0.18%), our P355NH pipes achieve a minimum yield strength of 355 MPa while maintaining superior structural stability at elevated temperatures. Our manufacturing process incorporates precision German molding technology and automated non-destructive testing (NDT) to ensure a homogeneous microstructure and zero-defect weld seams. This metallurgical consistency is vital for preventing brittle cracking and long-term thermal fatigue in complex industrial utility networks. Each pipe undergoes 100% automated ultrasonic testing (AUT) and comprehensive X-ray inspection to meet the stringent Pressure Equipment Directive (PED) criteria. With an annual LSAW capacity of 300,000 tons and full CE certification, Huayang delivers high-performance piping solutions that guarantee long-term operational reliability in the world's most demanding thermal power and petrochemical environments.
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