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              Home - Products -輸送流體用無縫鋼管

              輸送流體用無縫鋼管

              輸送流體用無縫鋼管

              標準:
              GB/T8163——中國國家標準
              用途:
              用于輸送流體用的一般無縫鋼管
              主要生產鋼管牌號:
              10、20、Q345 等

               

              尺寸
              公差:

               

              鋼管種類

              外徑(D)

              鋼管壁厚(S)

              冷拔管

              鋼管外徑(mm)

              允許偏差(mm)

              鋼管壁厚(mm)

              允許偏差(mm)

              >30~50

              ±0.3

              ≤30

              ±10%

              >50~219

              ±0.8%

              熱軋管

              >219

              ±1.0%

              >20

              ±10%

               

              力學性能:

              標準

              牌號

              抗拉強度(MPa)

              屈服強度(MPa)

              伸長率(%)

              GB/T8163

              10

              335~475

              ≥205

              ≥24

              20

              410~550

              ≥245

              ≥20

              Q345

              490~665

              ≥325

              ≥21

              化學成分:

              標準

              牌號

              化學成分(%)

              C

              Si

              Mn

              P

              S

              Cr

              Ni

              Cu

              GB/T8163

              10

              0.07~0.14

              0.17~0.37

              0.35~0.65

              ≤0.035

              ≤0.035

              ≤0.15

              ≤0.25

              ≤0.25

              20

              0.17~0.24

              0.17~0.37

              0.35~0.65

              ≤0.035

              ≤0.035

              ≤0.25

              ≤0.25

              ≤0.25

              Q345

              0.12~0.20

              0.20~0.55

              1.20~1.60

              ≤0.045

              ≤0.045

              /

              /

              /

              關鍵詞:

               

               
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              pskvic@www.xjtanxian.com
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              86+514+86529012
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