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Kazakhstan, Kyrgyzstan, Tajikistan, Turkmenistan, Uzbekistan, Austria, Germany, Hungary, Liechtenstein, Poland, Slovakia, Switzerland, The Czech Republic, Chad, Central African Republic, Cameroon, Equatorial Guinea, Gabon, The Republic of Congo , The Democratic Republic of the Congo, The Democratic Republic of Sao Tome and Principe, Belize, Costa Rica, Guatemala, Honduras, Nicaragua, Panama, Salvador, China, Hong Kong-China, Japan, Mongolia, Macao-China, North Korea, South Korea, Taiwan-China, Belarus, Estonia, Kosovo, Latvia, Lithuania, Moldova, Russia, Ukraine, Burundi, Djibouti, Ethiopia, Eritrea, Kenya, Mayotte, Mauritius, Rwanda, Reunion, Somalia, Seychelles, South Sudan, Tanzania, Uganda, Aland Islands, Bonaire,SaintEustatiusAndSaba, Denmark, Finland, Faroe Islands, Iceland, Norway, Sweden, Algeria, Egypt, Libya, Morocco, Sudan, Tunisia, Antigua and Barbuda, Anguilla, Aruba, Bahamas, Barbados, Bermuda, Canada, Cuba, Commonwealth of Dominica, Cayman Islands, Dominican, Grenada, Greenland, Guadeloupe, Haiti, Jamaica, Jersey, Mexico, Martinique, Montserrat, Puerto Rico, Saint Kitts and Nevis, Saint Lucia, Saint Vincent and the Grenadines, Saint Pierre And Miquelon, Sint Maarten, Trinidad and Tobago, United States, United States Minor Outlying Islands, U.S.Virgin Islands, Australia, American Samoa, Cocos Islands, Fiji, French Polynesia, Guam, Kiribati, Micronesia, Marshall Islands, New Zealand, Nauru, Niue, Northern Mariana Islands, New Caledonia, Papua New Guinea, Palau, Solomon Islands, Samoa, Tuvalu, Tonga, The Cook Islands, Tokelau, Vanuatu, Wallis And Futuna, Brunei, Cambodia, East Timor, Indonesia, Laos, Myanmar, Malaysia, Philippines, Singapore, Thailand, Vietnam, Bhutan, Bangladesh, India, Maldives, Nepal, Pakistan, Sri Lanka, Andorra, Albania, Bulgaria, Bosnia and Herzegovina, Croatia, French Southern Territories, Greece, Italy, Malta, Macedonia, Montenegro, Portugal, Romania, Spain, San Marino, Slovenia, Serbia, Vatican, Angola, Botswana, Comoros, Lesotho, Malawi, Mozambique, Madagascar, Namibia, South Africa, Swaziland, Saint Helena, Zambia, Zimbabwe, Argentina, Brazil, Colombia, Chile, Curacao, Ecuador, Falkland Islands, French Guiana, Guyana, Llívia, Peru, Paraguay, Suriname, Uruguay, Venezuela, Azerbaijan, Armenia, Afghanistan, Bahrain, Cyprus, Georgia, Iran, Iraq, Israel, Jordan, Kuwait, Lebanon, Oman, Qatar, Syria, State of Palestine, Saudi Arabia, Turkey, United Arab Emirates, Yemen, Belgium, France, Guernsey, Ireland, Isle Of Man, Luxembourg, Monaco, Netherlands, United Kingdom, Burkina Faso, Benin, Cape Verde, Côte d'Ivoire, Gambia, Guinea, Guinea-Bissau, Ghana, Liberia, Mauritania, Mali, Niger, Nigeria, Senegal, Sierra Leone, Togo, Western SaharaDuplex stainless steel seamless pipes have the following characteristics:
Good Mechanical Properties:
High Strength: Compared with ordinary austenitic stainless steel, the yield strength of duplex stainless steel seamless pipes is higher, reaching 400 MPa - 550 MPa, which is approximately twice that of ordinary stainless steel. This enables the use of a thinner pipe wall design under the same bearing requirements, thereby reducing the weight of the pipe and cutting down costs. For example, in fields such as building structures, bridges, and pressure vessels that have high requirements for structural strength, duplex stainless steel seamless pipes have significant advantages.
Good Toughness and Ductility: They possess relatively good toughness and can withstand a certain degree of deformation without breaking. During the processing and installation processes, this good ductility allows the pipes to better adapt to different construction conditions and complex pipe layouts, reducing the construction difficulty.
Excellent Corrosion Resistance:
Resistance to Uniform Corrosion: In various acid-base environments, oxidizing media, and neutral media, they have good resistance to uniform corrosion. Whether it is the transportation of acid-base liquids in chemical production or in general industrial environments, duplex stainless steel seamless pipes can maintain relatively good stability, reducing the risk of pipe damage and leakage caused by corrosion.
Resistance to Pitting and Crevice Corrosion: They have strong resistance to pitting and crevice corrosion caused by chloride ions and the like. In seawater, marine engineering, and some industrial wastewater treatment environments containing chloride ions, their corrosion resistance is significantly better than that of ordinary austenitic stainless steel and ferritic stainless steel, and they are especially suitable for these harsh corrosive environments.
Resistance to Stress Corrosion Cracking: They can effectively resist stress corrosion cracking, which is crucial for pipeline systems that are in a stressed state for a long time. For example, in fields such as petrochemical and offshore platforms, pipelines are often subject to the combined effects of internal pressure, external loads, and corrosive media. The characteristics of duplex stainless steel seamless pipes can ensure the safe operation of the pipelines.
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