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China, Japan, South Korea, North Korea, Mongolia, Hong Kong-China, Macao-China, Taiwan-China, Vietnam, Laos, Cambodia, Thailand, Myanmar, Malaysia, Singapore, Indonesia, Brunei, Philippines, East Timor, Nepal, Bhutan, India, Pakistan, Bangladesh, Sri Lanka, Maldives, Kazakhstan, Kyrgyzstan, Tajikistan, Uzbekistan, Turkmenistan, Iran, Iraq, Azerbaijan, Georgia, Armenia, Turkey, Syria, Jordan, Israel, State of Palestine, Saudi Arabia, Bahrain, Qatar, Yemen, Oman, United Arab Emirates, Kuwait, Lebanon, Cyprus, Afghanistan, Norway, Sweden, Finland, Denmark, Iceland, Aland Islands, Bonaire,SaintEustatiusAndSaba, Faroe Islands, Estonia, Latvia, Lithuania, Belarus, Russia, Ukraine, Moldova, Kosovo, Germany, Poland, The Czech Republic, Slovakia, Hungary, Austria, Liechtenstein, Switzerland, United Kingdom, Ireland, Netherlands, Belgium, Luxembourg, France, Monaco, Guernsey, Isle Of Man, Spain, Portugal, Andorra, Italy, Greece, Malta, Vatican, San Marino, Slovenia, Croatia, Albania, Romania, Bulgaria, Serbia, Macedonia, Bosnia and Herzegovina, Montenegro, French Southern Territories, Egypt, Sudan, Tunisia, Algeria, Libya, Morocco, Ethiopia, Somalia, Eritrea, Djibouti, Uganda, Tanzania, Rwanda, Burundi, Seychelles, Kenya, South Sudan, Reunion, Mayotte, 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, Mauritania, Western Sahara, Senegal, Gambia, Mali, Burkina Faso, Guinea, Guinea-Bissau, Cape Verde, Sierra Leone, Liberia, Republic of Côte d'Ivoire, Ghana, Togo, Benin, Niger, Nigeria, Angola, Zambia, Malawi, Zimbabwe, Mozambique, Republic of Botswana, Namibia, Republic of South Africa, Swaziland, Lesotho, Madagascar, Mauritius, Comoros, Saint Helena, Australia, New Zealand, Papua New Guinea, Solomon Islands, Vanuatu, Micronesia, Marshall Islands, Palau, Fiji, Kiribati, Nauru, Tuvalu, Samoa, Tonga, Niue, The Cook Islands, American Samoa, Cocos Islands, Guam, Northern Mariana Islands, New Caledonia, French Polynesia, Tokelau, Wallis And Futuna, Canada, United States, Mexico, Bahamas, Cuba, Jamaica, Haiti, The Dominican Republic, Saint Kitts and Nevis, Antigua and Barbuda, Commonwealth of Dominica, Saint Lucia, Saint Vincent and the Grenadines, Barbados, Grenada, Trinidad and Tobago, Anguilla, Bermuda, Greenland, Guadeloupe, Jersey, Cayman Islands, Martinique, Montserrat, Saint Pierre And Miquelon, Puerto Rico, Sint Maarten, United States Minor Outlying Islands, U.S.Virgin Islands, Guatemala, Belize, Salvador, Honduras, Nicaragua, Costa Rica, Panama, Colombia, Venezuela, Guyana, Suriname, Ecuador, Peru, Llívia, Brazil, Chile, Argentina, Uruguay, Paraguay, Curacao, Falkland Islands, French Guiana
Section Shape and Dimensional Precision
Regular Shape and Reasonable Section: The cross - sectional shape of cold - rolled H - steel is "H" - shaped. This shape gives it a distinct advantage in terms of force - bearing. The proportion of the flange and the web is relatively reasonable, which can effectively distribute the pressure, tension and bending moment it bears.
High Dimensional Precision: The cold - rolling process ensures the dimensional precision of H - steel. The tolerance range of the web thickness, flange width and thickness and other dimensions is small. Generally, the web thickness tolerance can be controlled within ±0.25 - ±0.4mm, the flange width tolerance can be controlled within ±1 - ±2mm, and the flange thickness tolerance can be controlled within ±0.3 - ±0.5mm. This high - precision dimensional characteristic enables cold - rolled H - steel to better meet the design requirements in occasions with stringent requirements for dimensional precision.
Surface Quality
Smooth and Flat Surface: The cold - rolling process makes the surface of H - steel very smooth. Under the action of the rolls of the cold - rolling mill, the oxide scale and uneven parts on the surface of the steel are effectively removed and flattened. Its surface roughness Ra value is usually between 1.6 - 3.2μm. Such surface quality performs well in application scenarios with high requirements for appearance or the need to be in close contact with other precision components. For example, in the metal frames of electronic equipment and the metal support structures of high - end furniture, the smooth surface can enhance the overall texture of the product.
Uniform Surface Quality: Due to the consistency of the cold - rolling process, the surface quality of H - steel is relatively uniform throughout its length and cross - section. This avoids the impact of local surface defects on performance and appearance and also makes subsequent surface treatments such as painting and galvanizing easier, and the treated effect is more uniform and beautiful.
Mechanical Properties
High Strength: The cold - rolling process refines the grains inside H - steel, thereby increasing the material's strength. Its yield strength can usually reach 300 - 500MPa, and the tensile strength can reach 400 - 600MPa. This high - strength characteristic enables it to perform excellently in structures that bear heavy loads. For example, in the support structures of large - scale bridges and the bases of heavy - duty machinery and other application scenarios, it can effectively bear huge pressure and tension.
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