Cheap s690ql steel plate sheet length

After extrusion, the s690ql steel plate tube shall be removed for sizing. The sizing machine uses a cone-shaped bit to rotate into the steel embryo at high speed to drill holes to form steel pipes. The inner diameter of the steel pipe is determined by the outer diameter length of the drill bit of the sizing machine. After sizing, the steel pipe will enter the cooling tower and be cooled by water spray. After cooling, the steel pipe will be straightened. After straightening, the steel pipe is sent to the metal flaw detector (or hydraulic test) by the conveyor belt for internal flaw detection.

A514 grade Q alloy structural steel chemical composition (melting analysis)%C: 0.14-0.21, Si: 0.15-0.35, Mn: 0.95-1.30, P max.: 0.035, S max.: 0.035, Ni: 1.20-1.50, Cr: 1.00-1.50, Mo: 0.45-0.6.0, V: 0.03-0.08The mechanical properties in thickness (mm)T≤65Yield strength (≥Mpa): 690Tensile strength (Mpa):760-895Elongation in ≥, %: 18

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Too fast cutting speed will make the s690ql steel plate cutting section sag and slag hanging and other quality defects, serious may cause cutting interruption; Too slow cutting speed will make the edge of the incision melting collapse edge, the lower edge of the rounded corner, the lower part of the cutting section of the deep groove pits and so on. In the normal flame cutting process, cutting oxygen flow relative to the vertical cutting torch slightly after an Angle, its corresponding offset is called after drag.