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Q345b steel tube,Q345b carbon steel seamless pipe

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 Q345B/16Mn Structural tube: 

for conveying of petroleum, gas and other fluid 
ISO2937,CCC,CE,EN 
Export to 27countries 
2-12m

Q345B/16Mn Structural tube:
Standard:

GB/8162,ASTM A53(A,B),ASTM A106(A,B),ASTM A500/A501/A519,JIS G3441/3444/3456,ISO2937, DIN 1626/17175

 Grade:

10#,20#,35#,45#;STPG 38,STS38,STB30,STB33,STB35,STPG42,,st37,st35.8,st35.4,st42,st45-8,st45-4

 Application:

Used in general structure and mechanism , including construction , machinery , transportation , aviation ,petroleum mining and each kind of structure tubes

 

Q345b steel tube,Q345b carbon seamless pipe

Structure tube  Outside diameter tolerance

 

Hot rolled(extrude, expansion)

±1% D or 0.50,choose the largest

 
 

Cold drawn(rolled)

±1% D or 0.30,choose the largest

 

 

Cold drawn(rolled) structure tube Wall thickness Tolerance

Steel pipe type

Wall thickness

Tolerances

Cold Drawn(Rolled)

<3

±15%,-10%S ,choose the larger one

>3

±12.5%,-10%S

 

Steel Grade

Tensile Strength Mpa

Yield Strength Mpa

Elongation%

<16

16-30

>30

 

MIN

10#

335-

205

195

1185

24

20#

390

245

235

225

20

35#

510

305

295

285

17

45#

590

335

325

315

14

 

Structure tube chemical compositon

Standard

 

Grade

 

C

Si

Mn

P<

S<

Cu<

Ni<

Cr<

GB/T8162

10#

0.07-0.14

0.17-0.37

0.35-0.65

0.035

0.035

0.25

0.25

0.15

20#

0.17-0.24

0.17-0.37

0.35-0.65

0.035

0.035

0.25

0.25

0.25

35#

0.32-0.39

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.25

45#

0.42-0.50

0.17-0.37

0.50-0.80

0.035

0.035

0.25

0.25

0.25

 

 

.

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