Stainless Steel Flanges for Marine Applications are corrosion-resistant components tailored for harsh saltwater environments. Fabricated from ASTM A182 F316L stainless steel (Cr 16-18%, Ni 10-14%, Mo 2-3%), they contain molybdenum that enhances pitting resistance (PREN ≥ 40) in chloride-rich environments.
| Quantity: | |
|---|---|
Product Description
Certified by DNV and ABS, these flanges meet ASME B16.5 dimensional standards, making them essential for shipbuilding, offshore energy, and coastal infrastructure.
Product |
Stainless steel Flange |
Technical |
Forged |
Types of Flange |
Slip On Flange |
Welded Neck Flange |
|
Blind Flange |
|
Thread Flange |
|
Plate Flange |
|
Lap joint flange |
|
Grade |
304,316L,321,317L,304H,310s,347H,316Ti,904L,253MA,254SMO |
Duplex Steel: |
|
UNS S31803,S32205,S32750,S32760 |
|
Nickel Alloy: |
|
N04400, N08800,N08810, N08811,N08825, N08020,N08031, N06600,N06625, N08926,N08031, N10276 |
|
Dimension |
DN15-DN3000,1/2''-36'' |
Pressure Rating |
Class150-Class2500 PN10-PN160 |
Standard |
ASME B16.5,ASME B16.47 |
MSS SP44 |
|
EN1092-1 |
|
ASTM A182 |
|
JIS B2220, |
|
BS4504 |
|
SABS/SANS 1123 |
|
AWWA C207 |
|
Advantages |
Regular stock , fast delivery , high quality ,Available in a wide range of sizes |
Application |
Industry Decoration Sanitary Structural |
Packaging |
Plastic bag/woven packing(please send details packing to us if you have other requirements) |
Intergranular Corrosion Resistance: Low carbon content (≤0.035%) prevents sensitization during welding, maintaining corrosion resistance in heat-affected zones.
Surface Finish: 2B or No.4 polished surfaces reduce biofouling accumulation, with Ra ≤ 0.8μm to minimize marine organism adhesion.
Hydrostatic Testing: Each flange undergoes 1.5x design pressure testing for 30 minutes, ensuring leak tightness in submerged applications.
Fastener Compatibility: Pre-drilled holes match ASTM A193 B8M bolts, creating a complete corrosion-resistant system.
Shipboard Systems: Used in seawater cooling lines, ballast water treatment systems, and fuel transfer manifolds.
Offshore Platforms: Connects risers, umbilicals, and process pipelines in oil and gas production facilities.
Coastal Desalination: Applied in reverse osmosis unit piping, brine discharge lines, and intake structures.
Q: What is the expected service life in fully submerged seawater?
A: Typically 20-30 years with proper maintenance, depending on water velocity and chlorination levels.
Q: Can they be used with sulfur-containing media?
A: Yes, 316L's molybdenum content provides better resistance to sulfide stress cracking than 304 stainless steel.
Q: What welding process is recommended?
A: GTAW (TIG) with ER316L filler metal, using argon backing gas to prevent oxidation of root passes.
