YUHONG HOLDING GROUP CO., LTD
| Payment Terms | L/C,T/T |
| Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap |
| Product Name | Boiler Tube |
| Standard | ASTM A335 / ASME SA335 |
| Material | P9 / 1.7386 / X11CrMo9-1 |
| OD | 1/2" ~24" |
| Thickness | sch5S to sch.XXS |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End |
| High Light | ASTM A335 P9 Alloy Steel Seamless Pipe, CrMo Alloy Boiler Tube |
| Brand Name | YUHONG |
| Model Number | ASTM A335 P9 Alloy Steel Seamless Pipe |
| Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA |
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Product Specification
| Payment Terms | L/C,T/T | Delivery Time | 7 DAYS |
| Packaging Details | Ply-wooden Case /Iron Case/ Bundle with plastic Cap | Product Name | Boiler Tube |
| Standard | ASTM A335 / ASME SA335 | Material | P9 / 1.7386 / X11CrMo9-1 |
| OD | 1/2" ~24" | Thickness | sch5S to sch.XXS |
| Length | Single Random, Double Random & Cut Length | End | Plain End, Beveled End |
| High Light | ASTM A335 P9 Alloy Steel Seamless Pipe, CrMo Alloy Boiler Tube | Brand Name | YUHONG |
| Model Number | ASTM A335 P9 Alloy Steel Seamless Pipe | Certification | ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008 |
| Place of Origin | CHINA | ||
| High Light | ASTM A335 P9 alloy boiler tube ，CrMo alloy steel seamless pipe ，high temperature alloy boiler tube | ||
ASME SA335 / ASTM A335 Grade P9 / 1.7386 / X11CrMo9-1 Alloy Steel Heat Exchanger Tube
Equivalent Grades of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube
|
Standard |
UNS |
Werkstoff / DIN |
EN |
JIS |
BS |
|---|---|---|---|---|---|
| ASTM A335/ ASME SA335 P9 | S50400 | 1.7386 | X11CrMo9-1 | STPA 26 | 3604 P1 629-470 |
Chemical Compositions % of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube
| C | Mn | P | S | Si | Cr | Mo |
| ≤0.15% | 0.3%~0.6% | ≤0.025% | ≤0.025% | 0.25%-1.00% | 8.0%~10.0% | 0.90%~1.10% |
Mechanical Properties of ASTM A335 / ASME SA335 Grade P9 Alloy Steel Seamless Pipe Boiler Tube
| Tensile Strength ksi/MPa | Yield Strength (0.2% offset) ksi/MPa |
Hardness HBW |
Heat Treatment Requirements
℉/℃
|
| ≥60/415 | ≥30/205 | ≤250 | 1250/675 |
Quick Comparison Table: Advantage vs. Other Grades
| Property | vs. Carbon Steel (e.g., A106) | vs. P11/P22 (1.25-2.25Cr) | vs. P91 (9Cr-1Mo-V) |
| Oxidation limit | Much higher | Higher | Similar |
| Creep strength | Much higher | Moderately higher | Lower (but P91 is superior) |
| Cost | Higher | Slightly higher | Lower (~30-50% less than P91) |
| Weldability | Worse (needs PWHT) | Similar | Better (more forgiving than P91) |
Application
Power generation boilers – Superheater and reheater tubes, especially in coal- or oil-fired units where high chromium content resists oxidation from flue gases.
Header pipes and steam lines – Moderate-temperature main steam piping (typically up to ~590°C / 1100°F).
Petrochemical furnaces – Hydrogen reformer tubes and furnace coils that require resistance to hydrogen attack and high-temperature sulfidation.
Heat exchangers – Shell-and-tube exchangers exposed to hot corrosive gas streams.
Refinery high-temperature piping – Transfer lines and heater tubes in crude oil heaters and coker units.
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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