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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 Sahara
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 SaharaI-beams are mainly divided into ordinary I-beams, lightweight I-beams, and wide flange I-beams. According to the ratio of flange to web height, it is divided into wide, medium, and narrow flange I-beams. The specifications produced by the first two are 10-60, which corresponds to a height of 10cm-60cm. At the same height, lightweight I-beams have narrow flanges, thin web plates, and are lightweight. Wide flange I-beam, also known as H-beam, has a cross-sectional characteristic of parallel legs and no slope on the inner side of the legs. It belongs to the economic section steel and is rolled on a four roll universal rolling mill, so it is also known as "universal I-beam". Ordinary I-beams and lightweight I-beams have formed national standards.
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