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              Home - Products -高壓化肥設備用無縫鋼管

              高壓化肥設備用無縫鋼管

              高壓化肥設備用無縫鋼管

              標準:
              GB6479——中國國家標準

              用途:
              用于高壓化肥設備和管道用無縫鋼管。
              主要生產鋼管牌號:
              10、20、16Mn、10MoWVNb、15CrMo、1Cr5Mo、12 Cr2Mo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(%)

              沖擊功(J)

              低溫沖擊Akv

              GB6479

              10

              335~490

              ≥205

              ≥24

              /

              -20℃≥18

              20

              410~550

              ≥245

              ≥24

              ≥39

              -20℃≥18

              16Mn

              490~670

              ≥320

              ≥21

              ≥47

              -40℃≥21

              10MoWVNb

              470~670

              ≥295

              ≥19

              ≥62

               

              15CrMo

              440~640

              ≥235

              ≥21

              ≥47

               

              1Cr5Mo

              390~590

              ≥195

              ≥22

              ≥94

               

              12 Cr2Mo

              450~600

              ≥280

              ≥20

              ≥38

               

              化學成分:

              標準

              牌號

              化學成分(%)

              C

              Si

              Mn

              P

              S

              Cr

              Mo

              Ni

              GB

              6479

              10

              0.07~0.14

              0.17~0.37

              0.35~0.65

              ≤0.030

              ≤0.030

              /

              /

              /

              20

              0.17~0.24

              0.17~0.37

              0.35~0.65

              ≤0.030

              ≤0.030

              /

              /

              /

              16Mn

              0.12~0.20

              0.20~0.60

              1.20~1.60

              ≤0.030

              ≤0.030

               
               
               

              10MoWVNb

              0.07~0.13

              0.50~0.80

              0.50~0.80

              ≤0.030

              ≤0.030

              /

              0.60~0.90

              /

              15CrMo

              0.12~0.18

              0.17~0.37

              0.40~0.70

              ≤0.030

              ≤0.030

              0.80~1.10

              0.40~0.55

              /

              1Cr5Mo

              ≤0.15

              ≤0.50

              ≤0.60

              ≤0.030

              ≤0.030

              4.00~6.00

              0.45~0.60

              ≤0.60

              12 Cr2Mo

              0.80~0.15

              ≤0.50

              0.40~0.70

              ≤0.030

              ≤0.030

              2.0~2.50

              0.90~1.20

               

              注:其中10的殘余元素含量Ni≤0.25%、Cr≤0.15%、Cu≤0.20%
              20的殘余元素含量Ni≤0.25%、Cr≤0.25%、Cu≤0.20%、Mo≤0.15%、V≤0.08%
              其他的殘余元素含量Ni≤0.30%、Cr≤0.30%、Cu≤0.20%

               
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              86+514+86529012
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