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ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
Specifications
Brand Name :
Yuhong
Certification :
ABS, BV, DNV, CCS, LR
Place of Origin :
China
MOQ :
200-500KGS
Price :
Negotiable
Payment Terms :
TT,LC
Supply Ability :
According to Clients' requirements
Delivery Time :
45-75 Days (Depend on Customer's Requirement
Packaging Details :
Ply-wooden Cases with Steel Frames(both ends of pipes have plastic caps）
Base Tube Material :
ASTM A335 P9 11CR
Product Name :
Serrated Finned Tube / Serrated Spiral High Frequency Welding Finned Tube
Application :
heat exchangers, air preheaters
Description

1.What is ASTM A335 P9 11CR Fin Serrated?
ASTM A335 P9 11CR Fin Serrated Tubes are high-performance chromium-molybdenum alloy steel tubes with serrated (L-foot) fins, designed for extreme heat transfer efficiency in high-temperature/pressure environments. The P9 base material (9% Cr, 1% Mo) combined with mechanically bonded serrated fins creates a 20-30% larger heat exchange surface than smooth tubes, significantly boosting thermal performance while resisting oxidation up to 650°C.

2. Chemical & Mechanical Properties

Chemical Composition (ASTM A335 P9)

Element

Min (%)

Max (%)

Key Benefit

Chromium

8.00

10.00

Oxidation/Sulfidation Resistance

Molybdenum

0.90

1.10

High-Temperature Strength

Carbon

0.15

0.25

Stability at Elevated Temp

Manganese

0.30

0.60

Hot Workability

Silicon

0.50

1.00

Deoxidation Agent

Mechanical Properties

Property

Value

Advantage

Tensile Strength

≥ 415 MPa (60,200 psi)

Withstands high-pressure systems

Yield Strength

≥ 205 MPa (30,000 psi)

Resists deformation under thermal stress

Hardness (Brinell)

≤ 179 HBW

Optimal balance: Toughness & Wear Resistance

Operating Temp

-29°C to 650°C

Ideal for boilers, reformers, heaters

3. Key Applications
These tubes excel in critical heat transfer systems demanding corrosion resistance and thermal efficiency:
· Petrochemical: Hydrocracker furnaces, catalytic reformers (resists H₂S corrosion)
· Power Generation: Boiler superheaters, waste heat recovery units (25% longer service life vs. P11)
· Industrial Heating: Direct-fired heaters, thermal fluid systems (reduces fouling by 40%)
· Renewable Energy: Biomass boilers, geothermal heat exchangers

4. Why Choose Our Product?
· L-foot serration design prevents fin loosening under thermal cycling
· Laser-welded fins ensure 100% metallurgical bonding
· Customizable: OD 15-120mm, fin density 5-19 FPI

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ASTM A335 P9 11CR Fin Serrated For Power Plants

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Product Detail
Brand Name :
Yuhong
Certification :
ABS, BV, DNV, CCS, LR
Place of Origin :
China
MOQ :
200-500KGS
Price :
Negotiable
Payment Terms :
TT,LC
Contact Supplier
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants
ASTM A335 P9 11CR Fin Serrated For Power Plants

YUHONG HOLDING GROUP CO., LTD

Verified Supplier
2 Years
ningbo
Since 1990
Business Type :
Manufacturer, Importer, Exporter, Trading Company, Seller, Other
Main Products :
Stainless Steel Heat Exchanger Tube, Studded Tube, Duplex Stainless Steel Heat Exchanger Tube
Total Annual :
50M-70M
Employee Number :
50~800
Certification Level :
Verified Supplier
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