国产三级伦理在线,久久久久黄久久免费漫画,成人国产精品日本在线,欧美美最猛性xxxxxx

  化學成分

  C

  Mn

  Si

  S

  P

  Cu

  Ni

  Mo

  Cr

  N

  保證值

  ≤0.04

  0.50~2.0

  ≤0.90

  ≤0.03

  ≤0.04

  ≤0.75

  8.5~10.5

  2.5~3.5

  21.5~23.5

  0.08~0.20

  試驗項目

  σb(MPa)

  δ5(%)

  保證值

  ≥690

  ≥20

  Wire Diameter(mm)

  φ3.2

  Welding Current(A)

  Downhand Welding

  90～120

  Vertical Welding

  80～100