Round Bar

Seamless Pipe

Rectangular Pipe

Q345B Boiler Tube

Implementation Standards

ASTM A 106M、ASTM A 192M、ASTM A213M、GB/T 5310、JIS G3461

Applicable Scope

General boiler tubes are mainly used to make water wall tubes, boiling water pipes, superheated steam pipes, superheated steam pipes used for locomotive boilers, big and small smoke pipes and arch brick pipes, etc..

The boiler seamless steel pipe is mainly used to manufacture high-pressure and ultrahigh pressure boiler superheater, reheater pipe, main steam pipe etc..

Chemical Composition

Steel Grade		C	Si	Mn	S	P	Cr	Mo	Other
Standard	Steel	C	Si	Mn	max		Cr	Mo	Other
ASTM A 192M ASME SA-192M	A192 SA-192	0.06 ~ 0.18	≤0.25	0.27 ~ 0.63	0.020	0.025
ASTM A106M ASME SA-106	A 106B SA-106B	≤0.30	≥0.10	0.29 ~ 1.06	0.020	0.025
ASTM A106M ASME SA-106	A 106C SA-106C	≤0.35	≥0.10	0.29 ~ 1.06	0.020	0.025
ASTM A213M ASME SA-213M	A213 T11 SA-213 T11	0.05 ~ 0.15	0.50 ~ 1.00	0.30 ~ 0.60	0.020	0.025	1.00 ~ 1.50	0.44 ~ 0.65
ASTM A213M ASME SA-213M	A213 T12 SA-213 T12	≤0.15	≤0.50	0.30 ~ 0.61	0.020	0.025	0.80 ~ 1.25	0.44 ~ 0.65
JIS G3461	STB 340	≤0.18	≤0.35	0.30 ~ 0.60	0.020	0.025
GB 5310	20G	0.17 ~ 0.23	0.17 ~ 0.37	0.35 ~ 0.65	0.015	0.025

Mechanical Property

Standard	Grade	Tensile Strength	Yield Strength Not less than	Elongation Not less than	Impact Energy Not less than	Hardness Not greater than
ASTM A106M ASME SA-106	A 106B SA-106B	≥415	240	30
ASTM A106M ASME SA-106	A 106C SA-106C	≥485	275	30
ASTM A 192M ASME SA-192M	A192 SA-192	≥325	180	35		77HRB(137HBW)
ASTM A213M ASME SA-213M	A213 T11 SA-213 T11	≥415	205			85HRB(163)HBW
ASTM A213M ASME SA-213M	A213 T12 SA-213 T12	≥415	205			85HRB(163)HBW
JIS G3461	STB 340	≥340	175	35
GB 5310	20G	410~550	245	Longitudinal 24 transverse 22	Longitudinal 24 transverse 22

Product

Round Bar

Seamless Pipe

Rectangular Pipe

Q345B Boiler Tube