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S32750 2507 Super Duplex Steel Seamless Tube for Marine
Product Specifications
Attribute
Value
Product Name
Super Duplex Seamless Tube
Material
Super Duplex S32750 / 2507
Standard
ASTM A789 / ASME SA789
Process
Fixed Length (e.g., 6m)
Surface Finish
Cold Drawn
Application
Subsea, Marine
Product Description
Super Duplex Seamless Tube made from Super Duplex S32750 / 2507 material, manufactured to ASTM A789 / ASME SA789 standards. The tubes are produced through a seamless, cold drawn process with solution annealing and quenching. With a PREN > 40, these tubes are ideal for demanding applications in subsea, marine, desalination, and oil & gas industries.
Material Properties
Super Duplex steel S32750 is engineered for extreme performance in highly corrosive environments. Its unique chemical composition with high chromium, molybdenum, and nitrogen content delivers a Pitting Resistance Equivalent Number (PREN) exceeding 40, providing exceptional resistance to localized corrosion. In high-chloride environments like warm seawater, S32750 demonstrates remarkable immunity to stress corrosion cracking (SCC), outperforming standard duplex and most austenitic stainless steels.
Chemical & Mechanical Properties
Chemical Composition (wt %), ASTM A789:
Chromium (Cr): 24.0 - 26.0
Nickel (Ni): 6.0 - 8.0
Molybdenum (Mo): 3.0 - 5.0
Nitrogen (N): 0.24 - 0.32
Manganese (Mn): 1.20 max
Copper (Cu): 0.50 max
Mechanical Properties (Minimum), ASTM A789:
Tensile Strength: 800 MPa (116 ksi)
Yield Strength: 550 MPa (80 ksi)
Elongation: 15%
Hardness: 310 HBW / 32 HRC max
Marine Engineering Applications
S32750 Seamless Tube is the material of choice for critical marine applications including:
Control lines and hydraulic pipes in subsea oil and gas production systems
High-pressure process piping exposed to corrosive well fluids
High-pressure components in seawater reverse osmosis (SWRO) desalination systems
Offshore chemical plant equipment handling corrosive media
Quality Assurance
Our stringent quality control system ensures superior performance of S32750 tubes through:
Comprehensive non-destructive testing and dimensional inspection
Metallographic analysis to verify optimal austenite/ferrite phase ratio (40-60%)
Solution annealing and quenching heat treatment verification
Certification to international standards
Global Supply Capabilities
As a leading exporter of stainless steel pipes, we provide:
Worldwide logistics expertise
Compliance with international standards and documentation requirements
Secure export packaging for high-value materials
Reliable on-time delivery to global destinations
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2006
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes.
With 19 years of growth, we have establis... Zhejiang seamless pipe co.,ltd. (SMLSCO) is a specialized stainless steel piping systems provider with 19 years of industry experience. We began by supplying cost-effective stainless steel seamless pipes but for now, Smlsco is more than pipes.
With 19 years of growth, we have establis...
