YUHONG HOLDING GROUP CO., LTD
| Studded Tubes Standard And Material | ASTM A335 P9 |
| Payment Terms | TT, LC |
| Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Superheaters, etc |
| Studded Tubes Studs Size | Height 10-50MM, Width 6-13MM |
| Studded Tubes ASTM A335 P9 | Alloy Steel Seamless Pipes |
| Delivery Time | 30-60 days |
| Studded Tubes O.D. | 32-219MM |
| Fin Tubes Type | Studded Tubes |
| Studded Tubes Studs Material | Cr12/13 |
| Packaging Details | Ply-wooden Case With Iron Frame |
| Supply Ability | 1000 tons/month |
| Packing | Ply-wooden Case With Iron Frame |
| Model Number | Studded Tubes |
| Certification | ABS, BV, DNV, CCS, LR,etc. |
| Brand Name | YUHONG |
| Place of Origin | China |
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Product Specification
| Studded Tubes Standard And Material | ASTM A335 P9 | Payment Terms | TT, LC |
| Use | For large equipment, Heat Exchanger / Boiler / Furnaces / Condensers / Superheaters, etc | Studded Tubes Studs Size | Height 10-50MM, Width 6-13MM |
| Studded Tubes ASTM A335 P9 | Alloy Steel Seamless Pipes | Delivery Time | 30-60 days |
| Studded Tubes O.D. | 32-219MM | Fin Tubes Type | Studded Tubes |
| Studded Tubes Studs Material | Cr12/13 | Packaging Details | Ply-wooden Case With Iron Frame |
| Supply Ability | 1000 tons/month | Packing | Ply-wooden Case With Iron Frame |
| Model Number | Studded Tubes | Certification | ABS, BV, DNV, CCS, LR,etc. |
| Brand Name | YUHONG | Place of Origin | China |
| High Light | Studded Tubes alloy steel ASTM A335 P9 ，Finned Tubes for 500℃ working temperature ，Studded Tubes with high temperature resistance | ||
Studded Tubes Finned Tubes Alloy Steel ASTM A335 P9 For 500℃ Working Temperature
ASTM A335 / ASME SA335 P9 is a seamless ferritic alloy steel pipe, grade UNS K90941, composed of a 9Cr-1Mo alloy. P9 material exhibits excellent high-temperature creep strength and superior resistance to oxidation and sulfide corrosion. It can operate at temperatures up to 550–600°C and is suitable for high-pressure, high-temperature thermal equipment. P9 is specifically designed for high frequency welded finned tubes,serrated finned tubes and studded finned tubes and can be used in heat exchanger tube production.
This type of finned tube - studded finned tube has high heat exchange efficiency, large stud spacing, is dirt-resistant and easy to clean; it has high mechanical rigidity and is resistant to flue gas erosion and thermal cycle fatigue; it is perfectly suited for environments with heavy dust and high sulfur flue gas.
Chemical Composition (%)
| Grade | C | Mn | P | S | Si | Cr | Mo |
| P9 | 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
Mechanical Properties
| Grade | Tensile Strength,min | Yield Strength (0.2%Offset,min) |
| P9 | 60ksi (415 MPa) | 30ksi (205 MPa) |
Inspection Tests & Inspection Standards
Base tube/pipe inspection: ultrasonic testing (UT), hydrostatic testing, normalizing and tempering heat treatment, chemical composition/mechanical property testing, PMI test,etc.;
Post-weld inspection: Weld integrity penetrant testing (PT), stud pull-out strength testing;
Compliance with standards: ASME Section 1, ASME Section 8, API 661, PED Pressure Equipment Directive;
Provide a complete set of factory documentation: Material Testing Certificate (MTC), heat treatment report, non-destructive testing report, dimensional inspection records, PMI report, etc.
All YUHONG products undergo comprehensive ultrasonic testing, hydrostatic testing, and penetrant weld inspection, and fully comply with ASME and API standards.
Application
Convection and radiation sections of refinery heating furnaces (crude oil, vacuum distillation, hydrocracking furnaces)
Submerged heat exchange tubes in circulating fluidized bed (CFBC) boilers
Waste heat recovery furnaces for processing heavy fuel oil and coal-fired flue gas
Waste heat exchangers for high-sulfur process gas reformers
High-HRSG (High-Temperature Heat Recovery Steam Generator) for gas turbines
High-temperature superheaters and reheaters in industrial waste heat boilers
Process air coolers and high-temperature shell-and-tube heat exchangers
Flue gas waste heat recovery systems for natural gas combustion units
Available Sepecification Max Operating Temperature 500℃
| Finned Tubes Type | Outer Diameter | Studs Height | Studs Width | Fin Pitch | Tube Length |
| Studded Finned Tubes | 32-219MM | 10-50MM | 6-13MM | 10-40mm | ≤20Meters |
Company Details
Business Type:
Manufacturer,Importer,Exporter,Trading Company,Seller,Other
Year Established:
1990
Total Annual:
50M-70M
Employee Number:
50~800
Ecer Certification：
Verified Supplier
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...
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