Seamless Pipe Pile

Q345B 16Mn Seamless Structural Tube:Standard:GB 8162, GB T8163 ASTM A252 ASTM A53,ASTM A106(A,B),ASTM A500 A501 A519,JIS

Product Introduction

Q345B/16Mn Seamless Structural Tube:

Standard:

GB/8162, GB/T8163. ASTM A252/ASTM A53,ASTM A106(A,B),ASTM A500/A501/A519,JIS G3441/3444/3456,ISO2937, DIN 1626/17175

Grade:

Q345B,10#,20#,35#,45#;STPG 38,STS38,STB30,STB33,STB35,STPG42,,st37,st35.8,st35.4,st42,st45-8,st45-4

Pipe Application:

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

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
Cold Drawn(Rolled)	>3	±12.5%,-10%S

Mechnical property for Q345B low alloy seamless structural steel tube:

►Chemical composition for Q345B low alloy structural steel (Heat Analysis Max%)

Main chemical elements composition of Q345B
C	Si	Mn	P	S	V	Nb	Ti
0.20	0.55	1.00-1.60	0.040	0.040	0.02-0.15	0.015-0.060	0.02-0.20

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