It's a thread that's been formed by rolling the piece while hot between two dies.
(t)rolled
They are two different things. Zinc plated means it's coated in zinc. Cold rolled means it's "smashed" into shape without added heat. So you could have something that's cold rolled AND zinc plated!
hot rolled is a process in which iron alloy heated above recrystallisation temperature to induce desired mechanical , electrical properties like hardness ,toughness , tensile strength, etc..,some hot rolled process are.extruding.,annealing
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The weight of the two is not much different, generally speaking, cold-rolled sheet is thinner than hot-rolled sheet, if you want to buy cold-rolled sheet or hot-rolled sheet, you can go to the official website of Changzheng, Changzheng's products are of high quality and are the choice of the public. If you want to buy cold rolled sheet or hot rolled sheet, you can go to the official website of Changzeng.
(t)rolled
They are two different things. Zinc plated means it's coated in zinc. Cold rolled means it's "smashed" into shape without added heat. So you could have something that's cold rolled AND zinc plated!
hot rolled is a process in which iron alloy heated above recrystallisation temperature to induce desired mechanical , electrical properties like hardness ,toughness , tensile strength, etc..,some hot rolled process are.extruding.,annealing
Hot rolled steel must be descaled by pickling in acid with a lime water rinsebefore it can be cold finished
Plate mill
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Yes, hot-rolled steel is magnetic. A few types of steel have limited magnetic properties, but hot rolling is a process by which steel is prepared in a shape for marketing. The hot rolling does not affect the ability of the steel to be attracted to a magnet.
Hot-rolled sheet has low hardness, easy processing, good ductility and cheaper price. Cold rolled sheet has high hardness, relatively difficult to process, but not easy to deformation, higher strength. If you want to buy cold-rolled steel, you can go to the official website of Changzheng, the price of Changzheng's steel is moderate, and it is the choice of the public. Buy cold-rolled steel plate recognized Changzeng.
Rolled oats, commonly used for a hot breakfast cereal, are sometimes referred to as oatmeal. One cup of rolled oats weighs 81 grams.
http://site2.wikianswers.com/templates/images/saveBtn_enable.gif?v=48569 The color of mill scale after it is hot rolled is bluish black.