For the high-pressure boiler and steam pipes, and the petrochemical industry pipes;
Power plant; Chemical Fertilizer; Petrochemicals; Offshore Oils; Gas Productions; Refineries and etc.

3. Steel pipes No. of main production:

ASTM A335 Grade P5, P9, P11, P12, P22, P91, P92

ASTM A106 Grade B, C

4. Dimensional Tolerance

Pipe types	OD (mm)	Tolerance	WT (mm)	Tolerance
High Pressure Boiler Tube	219~457	±1.0％	≤20	-10% ~ +12.5%
	219~457	±1.0％	20~40	-10% +10%
	457~1422	±0.9％	＞40~70	-7％, +9％
	457~1422	±0.9％	＞70~20	-6％, +8％

5. Chemical Composition:

High Pressure Boiler Tube Chemical Requirements
Standard	Grade	UNS Designation	Composition, %
Standard	Grade	UNS Designation	C	Mn	P	S	Si	Cr	Mo	Ni	V	Others
ASTM A335	P5	K41545	0.15max	0.30-0.60	0.025	0.025	0.50max	4.00-6.00	0.45-0.65			...
	P9	S50400	0.15max	0.30-0.60	0.025	0.025	0.25-1.00	8.00-10.00	0.90-1.10			...
	P11	K11597	0.05-0.15	0.30-0.60	0.025	0.025	0.50-1.00	1.00-1.50	0.44-0.65			...
	P12	K11562	0.05-0.15	0.30-0.61	0.025	0.025	0.50 max	0.80-1.25	0.44-0.65			...
	P22	K21590	0.05-0.15	0.30-0.60	0.025	0.025	0.50 max	1.90-2.60	0.87-1.13			...
	P91	K91560	0.08-0.12	0.30-0.60	0.02	0.01	0.20-0.50	8.00-9.50	0.85-1.05	0.4	0.18-0.25	N 0.030-0.070
												Al 0.02max
												Cb 0.06-0.10
												Ti 0.01 max
												Zr 0.01max
	P92	K92460	0.07-0.13	0.30-0.60	0.02	0.01	0.50 max	8.50-9.50	0.30-0.60	0.4	0.15-0.25	N 0.03-0.07
												Al 0.02 max
												Cb 0.04-0.09
												W 1.5-2.00
												B 0.001-0.006
												Ti 0.01 max
												Zr 0.01 max
ASTM A106	Grade B		0.3	0.29–1.06	0.035	0.035	0.1	0.4	0.15	0.4	0.08
ASTM A106	Grade C		0.35	0.29–1.06	0.035	0.035	0.1	0.4	0.15	0.4	0.08

6. Mechanical Properties

Standards	Steel pipes No.	Tensile strength	Yield strength	Elongation	Impact energy	Hardness
Standards	Steel pipes No.	(Mpa)	(Mpa)	(%)	(J)	Hardness
ASTM A335	P5	≥415	≥205	≥22	≥35	≤187HB
	P9	≥415	≥205	≥22	≥35
	P11	≥415	≥205	≥22	≥35	≤163HB
	P12	≥415	≥220	≥22	≥35	≤163HB
	P22	≥415	≥205	≥22	≥35	≤163HB
	P91	585～760	≥415	≥20	≥35	≤250HB
	P92	≥620	≥440	≥20	≥35	≤250HB
ASTM A106	Grade B	≥415	≥240	≥22	≥35	/
ASTM A106	Grade C	≥485	≥275	≥20	≥35	/

7. Available Size Range:

OD		Thickness
mm	inch	mm	SCH
88.9~1422	3''~ 56''	2.11~140	≥SCH10
*If the steel grades and size you are looking for are not listed above, please contact us for further information.

Product Tags:

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