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Alloy pipe is a kind of seamless steel pipe

Sep. 06, 2019

Alloy pipe is a kind of seamless steel pipe. Its performance is much higher than that of ordinary seamless steel pipe. Because this steel pipe contains more Cr, its high temperature resistance, low temperature resistance and corrosion resistance are other. Sewed steel pipes can not match, so alloy pipes are widely used in petroleum, chemical,electric power, boiler and other industries.  

Mainly standard of Alloy Steel Pipe:

GB/T8162, GB3087, GB5310, ASME SA210, ASME SA213, DIN17175   

Application:For heating pipes with low and medium pressure boilers (working pressure is generally not more than 5.88Mpa, working temperature is below 450°C); used in high pressure boilers (working pressure is generally above 9.8Mpa, working temperature is between 450°C and 650°C) Heating surface pipe, economizer, superheater, reheater, petrochemical industrial pipe, etc. 

Mainly Grade:

20MnG, 25MnG, 15CrMoG, 35crmo, 42crmo, 12Cr2MoG, 12Cr1MoVG, 12Cr2MoWVTiB, 10Cr9Mo1VNb, 10crmoal, 9cr5mo. 9cr18mo, SA210A1, SA210C, SA213 T11, SA213 T12, SA213 T22, SA213 T23, SA213 T91, SA213 T92、ST45.8/Ⅲ, 15Mo3, 13CrMo44, 10CrMo910 and so on.

Tolerance of Alloy Steel Pipe:

TypeOutside Diameter(D)W.T(S)
Cold drawnOD(mm)Allowable deviation(mm)W.T (mm)Allowable deviation (mm)
>30~50±0.3>3~20±10%


Mechanical Properties of Alloy Steel Pipe:

StandardGradeTensile Strength(MPa)Yield Strength(MPa)Elongation(%)Hardness
GB308710335~475≥195≥24/
20410~550≥245≥20/
GB531020G410~550≥245≥24/
20MnG≥415≥240≥22/
25MnG≥485≥275≥20/
15CrMoG440~640≥235≥21/
12Cr2MoG450~600≥280≥20/
12Cr1MoVG470~640≥255≥21/
12Cr2MoWVTiB540~735≥345≥18/
10Cr9Mo1VNb≥585≥415≥20/
ASME SA210SA210A-1≥415≥255≥30≤143HB
SA210C≥485≥275≥30≤179HB
ASME SA213SA213 T11≥415≥205≥30≤163HB
SA213 T12≥415≥220≥30≤163HB
SA213 T22≥415≥205≥30≤163HB
SA213 T23≥510≥400≥20≤220HB
SA213 T91≥585≥415≥20≤250HB
SA213 T92≥620≥440≥20≤250HB
DIN17175ST45.8/Ⅲ410~530≥255≥21/
15Mo3450~600≥270≥22/
13CrMo44440~590≥290≥22/
10CrMo910480~630≥280≥20/


We are stockist of carbon and alloy seamless steel pipe, welcome any enquiries, we will offer in the first time!

Contact information:

Tel.: +86 317 5200 546

Fax: +86 317 5200 546

Email: sales@botopsteel.com

Whatsapp: +86 134 6376 8992

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