Along with the years of entrepreneurial journey of Zhongyuan people, she gradually formed her own spiritual pillar and behavioral norms. In the silent inheritance, she guided Zhongyuan Company towards a more brilliant tomorrow.
Spiral steel pipes for offshore platform structures are spiral welded steel pipes designed specifically for offshore platforms. They are manufactured using strip steel coils through spiral forming and double-sided submerged arc welding processes, and have high strength, corrosion resistance, compression resistance, and impact resistance. They are suitable for scenarios such as offshore platform pile foundations, support structures, and subsea pipeline connections, and can resist seawater erosion, wave impact, and deep-sea high-pressure environments.
keyword Offshore platform structural steel pipe Category Scene photos Related products Get a quoteDefinition and core functions of spiral steel pipes for offshore platform structures
Spiral steel pipes for offshore platform structures are spiral welded steel pipes designed specifically for offshore platforms. They are manufactured using strip steel coils through spiral forming and double-sided submerged arc welding processes, and have high strength, corrosion resistance, compression resistance, and impact resistance. They are suitable for scenarios such as offshore platform pile foundations, support structures, and subsea pipeline connections, and can resist seawater erosion, wave impact, and deep-sea high-pressure environments. Its core function is to ensure the safety, stability, and long-term use of offshore platforms through optimized structural design and anti-corrosion technology.
Technical characteristics and manufacturing processes
1. Material and structural design
Raw materials: Q345B low-alloy steel or X70/X80 high-grade steel materials are used, and the strip steel is pre treated with leveling and edge cutting to ensure mechanical properties and processing accuracy.
Ultra thick wall design: such as a spiral steel pipe with a diameter of 1500 × 32mm (wall thickness of 32mm), with a single weight of 56 tons, it can withstand the impact of deep-sea high pressure and geological disasters.
2. Anti corrosion and pressure resistance performance
Multi layer anti-corrosion technology: using 3PE (epoxy powder+adhesive+polyethylene) or hot-dip galvanizing process, with a salt spray corrosion resistance time of more than 30 years.
Pressure bearing capacity: The wall thickness range is 6-25mm (conventional specifications are 219mm-2500mm), with a maximum pressure bearing capacity of 2.5MPa. Spiral welds disperse stress and have an impact resistance that is 30% higher than that of straight seam pipes.
3. Manufacturing process
Double sided submerged arc welding: using automatic double wire welding technology, the weld gap is strictly controlled within 1-3mm, and the inner and outer welds are 100% ultrasonic inspected, with automatic defect alarm repair.
Intelligent detection: Each steel pipe undergoes a hydrostatic pressure test at 1.5 times the working pressure, and the data is automatically archived with a pass rate of ≥ 99.5%.
Application scenarios
Pile foundation and supporting structure
For offshore platform pile foundations, spiral steel pipes with diameters ranging from 219mm to 3620mm can penetrate seabed rock layers, providing stable support and resistance to seawater erosion and geological settlement.
Subsea pipeline connection
DN400 spiral steel pipe (such as 426 × 8mm) is used for oil and gas transportation, which can withstand high pressure and seawater corrosion, ensuring stable transportation of resources.
Wind turbine tower foundation
Thick walled spiral steel pipes (wall thickness ≥ 20mm) are used as offshore wind power foundation piles to adapt to high loads and complex marine environments.
Production standards
The material complies with GB/T 9711 (Petroleum and Natural Gas Steel Pipe Standard) and classification society (such as CCS, DNV) specifications.
Implement SY/T 0413 (3PE anti-corrosion) or ISO 12944 (ship coating standard) for anti-corrosion.
development trend
Ultra thick walled and high-strength materials: Promote X80/X100 steel grade steel pipes (such as 32mm ultra thick walled design) to enhance the compressive strength of deep-sea engineering.
ADD：Chengnan Industrial Development Zone, Yanshan County, Hebei Province
Domestic phone number：0086-317-6689999
International call：0086-317-6165555
E-mail:9905791@qq.com
