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This page:Home > Processing > Main text

Difference of chemical composition between new and pre-standard-surface

Release time:2008-4-29 8:54:13 Click:1643

Cambering
Width 2007 mm/m 1992  mm/2m
≥10~﹤40 ≤2.5 ≤6mm/2m
≥40~﹤125 ≤2.0
≥128~﹤600 ≤1.5
≥600~﹤2100 ≤1.0
 Diagonal
Length 2007 catercorner tolerance 1992
≤3000 ≤6 Keep smallest rectangle
>3000~6000 ≤10
>6000 ≤15
  先进标准中表面加工(finish)类型
GB/T4237-2007 ASTMA480/A480M-1999 EN10028-7:2000 JISG4304-2005
GB/T3280-2007 JISG4305-2005
1U-Hot rolled-Pickled NO1 1C NO1(NO3、NO4、240# 320# 400#)
1C-Hot rolled-Pickled 1E
1E-Hot rolled-Pickled 1D
1D-Hot rolled-Pickled  
2D Hot rolled-Pickled         2B Cold rolled-Pickled             BA Cold rolled bright annealed                   3# Polished with abrasive belt for surface or both face                       4# Polished with abrasive belt for surface or both face                       6# Polished with abrasive belt                       7# surface bright processing              8# surface mirror processing              TR Case harding treatment              HL Hair line poshing NO2D 2C 2D
NO2B 2D 2B
BA 2B BA
NO3 2E NO3(100-120) NO4(150-180)240# 320# 400# HL
NO4 2R
NO6 2G
NO7 2K
NO8 2P
TR 2F
 

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