气瓶用大口径无缝钢管
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气瓶用大口径无缝钢管

标准:
GB18248 —— 中国国家标准
ASTM A519 —— 美国材料与试验学会标准

用途:
用于制造气瓶用热轧大口径无缝钢管
主要生产钢管牌号:4130X

尺寸公差:

钢管种类

外径(D)

壁厚(S)

热轧管

钢管外径(mm)

允许偏差(mm)

钢管壁厚(mm)

允许偏差(mm)

φ559

±1.0%

17.0

-0%,+25

 

力学性能:

标准

牌号

抗拉强度(MPa)

屈服强度(MPa)

屈强比

伸长率(%)

冲击功Akv(J)

硬度

Q/321088HGB3

4130X

725~865

485~735

≤0.85

≥20

-40℃≥40

195~269HB

 

化学成分:

标准

牌号

化学成分(%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Q/321088HGB3

4130X

0.25~0.35

0.15~0.35

0.40~0.90

≤0.020

≤0.010

0.80~1.10

≤0.25

≤0.20

0.15~0.25

≤0.08

 


About Sunny Steel

Our team are highly trained and experienced in servicing and producing all types of steel supplies. Whether you've got a large construction project, or need parts for industrial machinery, our team of steel fabrication consultants will ensure that your project is provided with the parts you need, when you need them.

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