API 5L X60 Pipe DN1000

HFW High-Pressure Steel Pipes (Schedule 80-160) – For Critical Industrial High-Pressure Scenarios

HFW high-pressure steel pipes (WT ≥8mm, Schedule 80-160) are a premium variant of electric resistance welded steel pipes, designed for high-pressure (2.0MPa-4.0MPa) and high-temperature applications-relying on HFW's precision welding to ensure safety.

Key Characteristics of HFW High-Pressure Pipes

Dimensional and Performance Traits

Wall Thickness Range: 8.0mm-19.05mm, with OD spanning 88.9mm-323.9mm. Common configurations include Φ114×8.56mm (Schedule 80, WT 8.56mm) and Φ219×11.91mm (Schedule 80, WT 11.91mm);

Pressure Capacity: 2.0MPa-4.0MPa, suitable for oil/gas transmission, high-temperature steam, and chemical fluid transfer. Huayang's ASTM A106 Grade B HFW pipes have a pressure rating 25% higher than ERW pipes of the same gauge;

Welding Technology: HFW meaning refers to High-Frequency Welding (300kHz-500kHz) via induction heating-no direct electrode contact, creating a narrow HAZ (≤2mm) and weld strength ≥98% of the base metal.

Production Excellence at Huayang

Induction Coil Precision: A servo-driven system maintains the induction coil 1mm-2mm from the steel strip edge, ensuring uniform heating of thick walls. For Φ114×8.56mm Schedule 80 pipes, this reduces temperature variation to ±20℃, avoiding under-welding;

Strict Quality Testing: 100% ultrasonic flaw detection (UT) and 20% X-ray inspection-far more rigorous than ERW pipes. The 2023 Indonesian Oil Refinery's HFW pipe order had a 99.8% pass rate, with zero internal defects.

Applications of HFW High-Pressure Pipes

 Oil/Gas Branch Lines

Project Case: 2023 Indonesian Oil Refinery used 300 tons of Φ114×8.56mm Schedule 80 HFW steel pipes (ASTM A106 Grade B) for 2.2MPa crude oil transfer. The pipes' thick walls (8.56mm) resist corrosion from crude oil impurities, and HFW's weld integrity prevents leaks-critical for hazardous fluid transmission. The project passed international oil industry audits (API 5L) with no findings;

High-Temperature Adaptability: The pipes withstand 120℃ crude oil temperatures without thermal deformation, thanks to HFW's post-weld annealing (720℃-750℃).

Power Plant Steam Lines

Project Case: 2024 Tangshan Thermal Power Plant installed 200 tons of Φ219×11.91mm Schedule 80 HFW steel pipes for 180℃, 1.8MPa steam lines. The pipes' HAZ hardness (≤200HV) prevents cracking under thermal cycling, a risk ERW pipes of the same gauge would face. After 12 months of operation, the plant reported no maintenance issues;

Material Advantage: ASTM A106 Grade B steel's low sulfur content (≤0.035%) reduces weld brittleness, ensuring long-term reliability in high-temperature environments.