| Type: | Stainless Steel Pipes |
|---|---|
| Standard: | ASTM |
| Grade: | 300 Series |
|
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A789 specification covers standard requirements for grades of nominal wall thickness, stainless steel tubing for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.
Heat and product analyses shall be performed wherein the steel shall conform to the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, molybdenum, nitrogen, copper, and others.
Chemical Composition
| Grade |
C max |
Si max |
Mn max |
P max |
S max |
Cr | Ni | Mo | N |
| UNS S32750 | 0.030 | 0.8 | 1.2 | 0.030 | 0.015 | 24.0-26.0 | 6.0-8.0 | 3.0-5.0 | 0.24-0.32 |
| UNS S31803 | 0.030 | 1.0 | 2.0 | 0.020 | 0.020 | 21.0-23.0 | 4.5-6.5 | 2.5-3.5 | 0.08-0.20 |
| UNS S31500 | 0.030 | 1.0 | 1.2-2.0 | 0.030 | 0.030 | 18.0-19.0 | 4.5-5.5 | 2.5-3.5 | 0.05-0.10 |
Physical Properties
| Grade | Y.S.MPa min | T.S.Mpa min | Elongation % | Hardness HRC |
| UNS S32750 | 550 | 800 | 15 | 20 |
| UNS S31803 | 450 | 620 | 25 | 20 |
| UNS S31500 | 440 | 630 | 30 | 20 |
Mechanical Properties
| Grade | Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness | |
| Rockwell C (HR C) | Brinell (HB) | ||||
| UNS S31803 | 621 | 448 | 25 | 31 max | 293 max |
31803/32205 Equivalent grades
|
STANDARD |
WERKSTOFF NR. |
UNS |
|---|---|---|
|
Alloy 2205 Pipe |
1.4462 / 1.4462 |
S31803 / S32205 |
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.
We have imported advanced manufacturing, checking and testing equipment of aluminum profiles from USA, Germany, Japan, Italy and Switzerland. With advanced checking and testing method and perfect quality guarantee system, our products are produced in strict accordance with the GB/5237 standard and have passed the qualification of ISO9001: 2000 International Quality Management System, ISO14001: 2004 Environmental Management System, 18000: 2001 Occupational Health Management System and 8000: 2001 Social Responsibility Management system. Meanwhile, we provides our customer with many kinds of finishes, such as sand blasting, polishing, brush, anodizing, electrophoresis, ceramic electrophoresis, sparkling electroporesis, powder coating, thermal insulation, fluorocarbon spraying (PVDF COATING), wood grain, etc. With stable product quality and perfect after-sales service, Baowu has been recognized as qualified supplier by lots of domestic famous enterprises such as Country Garden, Haier, Goertek, etc. Our aluminum profiles have been exported to many countries, such as USA, Brazil, Vietnam, India, South Korea, Australia, Germany, Kenya, Russia, Israel, Japan, etc.
"Quick response to market development, never give up the principle of quality, continuously dedicate in brand promotion, improve and innovate our products, provide customers with high quality products and service". Baowu (Shandong) Aluminum Co., Ltd. is sincerely looking forward to cooperating with you to create a beautiful tomorrow together.
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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