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Hot rolled coil specification size standard and the thickness standard of hot rolled coil

Hot-rolled coil is to avoid corrosion on the exterior of the hot-rolled coil to extend its service life, the exterior of the hot-rolled coil is coated with a layer of metallic zinc, this zinc-coated hot-rolled coil is called hot-rolled plate. What is the standard scale of hot rolled sheet? There are many kinds of hot-rolled plate scale specifications, this article will introduce us to the hot-rolled coil specifications and the thickness of the hot-rolled coil.

First, the standard scale of hot-rolled plate

Hot-rolled coil is flat, rectangular, can be directly rolled or sheared from wide steel strip.

Hot-rolled coil by thickness, thin hot-rolled coil < 4 mm, thick hot-rolled coil 4 ~ 60 mm, extra-thick hot-rolled coil 60 ~ 115 mm.

Hot-rolled coil by rolling points, divided into hot-rolled coil's and cold-rolled coil's.

The width of the thin plate is 500 ~ 1500 mm; the width of the thick 600 ~ 3000 mm. Sheet by steel, general steel, high quality steel, alloy steel, spring steel, stainless steel, tool steel, heat-resistant steel, bearing steel, silicon steel and industrial pure iron sheet; by professional use, there are oil barrel plate, enamel plate, bulletproof plate; according to the appearance of the coating, there are hot-rolled sheet, tin-plated sheet, lead-plated sheet, plastic composite hot-rolled coil, etc..

Second, the scale specification of hot-rolled plate

Hot-rolled plate specification scale specification, hot-rolled plate thickness.

Hot-rolled coil

Third, the appearance of hot-rolled sheet

(1) appearance: hot-rolled plate because of the coating process in different ways, the appearance of different conditions, such as general zinc flowers, fine zinc flowers, flat zinc flowers, no zinc flowers and the appearance of phosphate treatment. German standards also rules have the appearance of the grade.

(2) The hot-rolled plate should have an outstanding appearance, and there should be no shortcomings harmful to the use of the product, such as no plating, holes, cracks and slag, beyond the plating thickness, scuffing, chromic acid dust scale, white rust, etc.. Foreign specifications on the detailed appearance of the shortcomings of the rules are not very clear. Order for some detailed shortcomings should be listed on the contract.

Fourth, the amount of hot-rolled

Hot-rolled volume specification value: Hot-rolled volume is a useful method to indicate the thickness of the zinc layer of the hot-rolled sheet throughout the selection. The unit of hot rolled volume is g/m2.

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