Seamless steel pipes in large calibers for high(low and middium)pressure boilers
and petrochemical industry

Standards:

GB3087 —— China national standards

GB5310 —— China national standards

ASME SA106 —— American Boiler and Pressure Vessel norms

ASME SA333 —— American Boiler and Pressure Vessel norms

ASME SA335 —— American Boiler and Pressure Vessel norms

DIN17175 —— German industry standards

EN10216-2 —— European pressure piping standards
Uses:

For the low and medium pressure boiler and steam header pipes; for the high-pressure boiler
and steam pipes, and the petrochemical industry pipes.

Steel pipes No. of main production:

10、20、20G、20MnG、25MnG、15CrMoG、12Cr2MoG、12Cr1MoVG、10Cr9Mo1VNb、SA106B、
SA106C、SA333Ⅰ、SA333Ⅵ、SA335 P5、SA335 P11、SA335 P12、SA335P22、SA335 P91、
SA335 P92、ST45.8/Ⅲ、15Mo3、13CrMo44、10CrMo910、15NiCuMoNb5-6-4

Dimensional tolerance:

Pipe types	Outer-caliber（D）		Thickness（S）
	Pipe outer-caliber(mm)	Allowable warp(mm)	Pipe thickness(mm)	Allowable warp(mm)
Hot-rolled pipes	＞219～457	±1.0％	≤20	－10％，＋12.5％
			＞20～40	－10％，＋10％
	＞457～1066	±0.9％	＞40～70	－7％，＋9％
			＞70～120	－6％，＋8％

Mechanical Properties:

Standards	Steel pipes No.	Tensile strength（MPa）	Bend strength（MPa）	Elongation（％）	Impact energy（J）	Hardness
GB3087	10	335～475	≥195	≥24		/
	20	410～550	≥245	≥20		/
GB5310	20G	410～550	≥245	≥24	≥35	/
	20MnG	≥415	≥240	≥22	≥35	/
	25MnG	≥485	≥275	≥20	≥35	/
	15CrMoG	440～640	≥235	≥21	≥35	/
	12Cr2MoG	450～600	≥280	≥20	≥35	/
	12Cr1MoVG	470～640	≥255	≥21	≥35	/
	10Cr9Mo1VNb	≥585	≥415	≥20	≥35	/
ASME SA106	SA106B	≥415	≥240	≥22	≥35	/
	SA106C	≥485	≥275	≥20	≥35	/
ASME SA333	SA333Ⅰ级	≥380	≥205	≥28	－45≥18	/
	ASME SA335	SA335 P11	≥415	≥205	≥22	≥35	≤163HB
SA335 P12		≥415	≥220	≥22	≥35	≤163HB
SA335 P22		≥415	≥205	≥22	≥35	≤163HB
SA335 P5		≥415	≥205	≥22	≥35	≤187HB
SA335 P91		585～760	≥415	≥20	≥35	≤250HB
SA335 P92		≥620	≥440	≥20	≥35	250HB
DIN17175	ST45.8/Ⅲ	410～530	≥255	≥21	≥27(DVM)	/
	15Mo3	450～600	≥270	≥22	≥34(DVM)	/
	13CrMo44	440～590	≥290	≥22	≥34(DVM)	/
	10CrMo910	480～630	≥280	≥20	≥34(DVM)	/
EN10216-2	15NiCuMoNb5-6-4 (WB36)	610～780	≥440	≥19	≥40	/