| Type: | Stainless Steel Pipes |
|---|---|
| Standard: | ASTM |
| Grade: | 400 Series |
|
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This specification covers seamless ferritic and austenitic steel boiler, superheater, and heat-exchanger tubes. Grades containing the letter H in their designation have requirements different from those of similar grades not containing the letter H.
These different requirements provide higher creep-rupture strength than normally achievable in similar grades without these different requirements. The tubes shall be made by the seamless process and shall be either hot finished or cold finished, as specified.
TP444 Features
TP444 is made of high-purity ferritic stainless steel. Compared with austenitic stainless steel, ferritic stainless steel has excellent stress corrosion resistance, hydrogen sulfide, chloride ion stress corrosion and pitting corrosion resistance, high thermal conductivity, small thermal expansion coefficient, very It is suitable for manufacturing heat exchangers for petrochemical and other industries.
Chemical Composition of TP444
| Carbon | Manganese | Phosphorus | Sulfur | Silicon | Chromium | Nickel | Molybdenum | Nitrogen |
| 0.03 | 1.00 | 0.04 | 0.03 | 1.00 | 17.5-19.5 | K | 1.75-2.50 | 0.035 |
Mechanical Properties
| Tensile Strength, min, ksi [MPa] | Yield Strength, min, ksi [MPa] | Elongation in 2 in. or 50 mm, min, %B,C | Hardness | |
| Brinell | Rockwell | |||
| 60 [515] | 40 [275] | 20 | 217 HBWI 230 HV | 96 HRB |
Equivalent Material:
| Grade | WERKSTOFF NR. | UNS | GB | JIS |
| TP444 | 1.4521 | S44400 | 019Cr19Mo2NbTi | SUS444 |
Applications:
-Chemical Equipment
-Heat Exchangers
-Condensers
-Oil Drilling Companies
-Power Generation
-Petrochemicals
Baowu Aluminum (Shandong) Co., Ltd. is located in Dongchangfu county, which is the largest aluminum manufacturing county in north China. The factory is only one kilometer from the Jiliao expressway, which make our transportation more convenient. Our total investment is more than one billion yuan for two large factories. The factory covers an area of 120, 000 Square Meters and The company employs more than 500 staff, including over 60 engineering technicians. Our annual output capacity is more than 120, 000 tons of aluminium profiles. Baowu has been awarded the honorary titles of "China Patent Shandong Star Enterprise", "Key Enterprise of Shandong Architectural Profile Industry", "Famous Brand of the Province Construction Machinery Industry", "Shandong Famous Brand", "Well-known Trade Mark of Shandong Province", "China Energy-saving Product Certification", etc. Our company was appraised as a national medium-sized enterprise by the Agricultural Ministry of China in 2004. As a professional aluminum profiles manufacturer, we specialized in manufacturing building door and window, decoration, curtain wall and industrial aluminum profiles.
Q:Can I get samples before order ?
A:Yes, of course. Usually our samples are free,we can produce by your samples or technical drawings.
Q:Can I go to your factory to visit?
A:Of course, we welcome customers from all over the world to visit our factory.
Q:How can I get a quotation from you ?
A:You can leave us message, and we will reply every message in time. Or we may talk on line.
Q:What product information do I need to provide?
A:You need to provide the grade, width, thickness, coating and the number of tons you need to purchase.
Q:Does the product have quality inspection before loading?
A:Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed.we accept the third party inspection absolutely.
Q:How do we trust your company?
We specialise in exporting business for over 15 years as golden supplier, Headquarter locates in Liaocheng City, Shandong province, you are welcome to investigate in any ways, by all means.
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