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Payment Type: T/T,L/C
Transportation: Ocean,Land,Air
Model No.: ASTM A335 / ASME SA335 GR.P9
Brand: YUHONG
Standard: ASTM A335 / ASME SA335
Material Grade: P9
Color: Black
Product Name: Studded Fin Tube
Base Tube Size: 25 - 219MM
Stud Pitch: 8 - 30MM
Stud Height: 5 - 35MM
Stud OD: 5 - 20MM
Tube Materials: Stainless Steel, Carbon Steel, Alloy Steel
ASTM A335 GR.P9 Studded Seamless Fin Tube
ASTM A335 Gr. P9 Alloy Steel Studded Tubes are applied to convection chamber of heating furnace in petrochemical industry to increase the heat transfer coefficient at the fuming side. Studded Tubes are two or three times the square of light Tubes. Due to the usage of studded Tubes, the hot strength can be obtained as the same as radiation in the reasonable design. Studded tube is an integrated heat exchange part processed using power frequency contact type resistance welding and upsetting force fusion welding.
Equivalent Grades:
| ASTM | ASME | UNS | BS | ISO | JIS G 3458 |
| A335 P9 | SA335 P9 | S50400 | 3604 P1 629-470 | 2604 II TS38 | STPA 26 |
Characteristics:
Satisfying connection surface, little heat loss .
Welding connection rate higher than 90 percent.
No need of welding power, hardly any welding tumor .
Narrow heated zone on the surface, no melted pool, without destroying the tissue of basic tube.
Welding parameters are strictly set to ensure the quality of bulk studded tube and avoid the instability of manual operation
Chemical Composition:
| Compositions | % |
| Carbon(max.) | 0.15 |
| Manganese | 0.3-0.6 |
| Phosphorus(max.) | 0.025 |
| Silicon(max.) | 0.5 |
| Chromium | 4-6 |
| Molybdenum | 0.45-0.65 |
Mechanical Properties:
| Tensile Strength, ksi [MPa], min | Yield Strength, ksi [MPa], min | Elongation (%), min |
| 60 [415] | 30 [205] | 30 |
Applications:
Heat Exchangers
Boilers, Condensers
Air Coolers
Oil Fire Furnace
Chemical Industry
Petromedical Industry
Offshore Industry
| Selling Units | : | Piece/Pieces |
|---|---|---|
| Package Type | : | Ply-Wooden Case Packing / Iron Case Packing |
| Picture Example | : |
|
Packaging: Ply-Wooden Case Packing / Iron Case Packing
Productivity: 1500 Tons Per Month
Transportation: Ocean,Land,Air
Place of Origin: China
Supply Ability: According To Customers' Requirement
Certificate: ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2015
HS Code: 8419909000
Payment Type: T/T,L/C
Incoterm: FOB,CFR,CIF,Express Delivery,EXW
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