A335 P91 Seamless Heat Exchange High Pressure Boiler Tube
We are specialized in supplying high pressure boiler tube tube for
more than 10 years and have rich experience. We own professional
technicians and engineers, professional testing equipment, rich
experience in delivery. We have more than 10 years of cooperative
customers.
Our high pressure boiler tubes are usually operated under high
temperature and high pressure, and pipes are exposed to high
temperature smoke. Oxidation and corrosion occur under the action
of gas and water vapor. Therefore, the steel pipe is required to
have high durability, high oxidation resistance, and good
structural stability. In addition to ensuring chemical composition
and mechanical properties, the high pressure boiler tube must have
The hydraulic test is carried out one by one, and the flaring and
flattening tests are to be carried out.
| Product | A335 P91 High Pressure Boiler Heat Exchange Alloy Seamless Steel
Pipe |
| Standard | ASTM A335 |
| Material | Gr.1,Gr.3,Gr.4,Gr.6,Gr.7,Gr.8,Gr.9,Gr.10,Gr.11 |
| Surface | Black paint, varnish, oil, galvanized |
| Pipe Length | 5.8 m to 12 m, can be customized according to the length
requirements |
| Pipe Ends | Plain Ends, Beveled Ends |
| End Protector | 1. Plastic caps (small OD) 2. Iron protector (large OD) |
| Application | Fluid pipe, oil pipe, gas pipe, structure pipe, boiler tubes |
| Test | Chemical Component Analysis, Mechanical Properties, Technical
Properties, Exterior Size |
| Productivity | 50000 tons per month |
| Min Order | 20 ton |
| Remark | Special design available according to requirement |
Chemical Composition of A335 P91 Seamless Heat Exchange High
Pressure Boiler Tube
| Element | C | Mn | P | S | Si | Cr | Mo | Others |
| Content, % | 0.08-0.12 | 0.30-0.60 | ≤0.020 | ≤0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 | - |
*V:0.18-0.25, N:0.030-0.070, Ni:≤0.040, Al:≤0.020, Cb:0.06-0.10,
Ti:≤0.01, Zr:≤0.01.
Size tolerance of A335 P91 Seamless Heat Exchange High Pressure
Boiler Tube
Outer diameter
mm | Tolerance of OD
mm | Wall thickness
mm | Tolerance of W.T
mm |
| 31.8-50 | +/- 0.3% | 3-20 | +/- 7.5% |
| 51-114 | +/- 1% | 3-20 | +/- 8.0% |
| 127-219 | +/- 1% | 5-60 | +/- 8.0% |
Usage of A335 P91 Seamless Heat Exchange High Pressure Boiler Tube:
Higher pressure, low & medium pressure boiler and steam header
pipes, Petrochemical industry pipes.
Our service
- Make production according to customer's specific requirements
strictly.
- Accept inspection during the production or before shipment.
- Provide the original copy of MTC (Mill testing certificate)
- Provide the standard seaworthy packing.
- Arrange the most professional shipment.
FAQ:
1. Can I request to change the form of packaging and
transportation?
A: Yes, We can change the form of the packaging and transportation
as per your request.
2. Can I request to advance the shipment?
A: It depends on whether there is sufficient inventory in our
warehouse.
3. Can you produce the products according to my own drawings?
A: Yes, we can produce the products according to your drawings.
4. What's your terms of payment?
A: T/T, L/C.
5.Do you accept custom design on size?
A: Yes, if the size is reasonable.
