Alloy steel pipes

Alloy steel pipe is a kind of seamless steel pipe, its performance is much higher than the general seamless steel pipe, because this steel pipe inside containing Cr, high temperature resistance, low temperature, corrosion-resistant performance of other non-pipe joints not match, so the more extensive use of alloy tube in the petroleum, aerospace, chemical, electric power, boiler, military, and other industries.

The alloy steel pipe adopts high quality carbon steel, alloy structural steel and stainless & heat resisting steel as raw material through hot rolling or cold drawn to be made.



Alloy pipes specification and Size

Alloy steel is a series of alloy which its main content is steel. To add different metal elements with different ratios in steel can change the mechanical properties of alloy steel.

ASTM/ ASME

American Society for Testing and Materials(ASTM), American Society of Mechanical Engineers (ASME)

Description Standard Dimension
(mm)
Steel code/ Steel grade
Carbon and alloy steel mechanical tubing, either hot-finished or cold-finished ASTM A519 20-180 x 2-30 A1, C
Seamless Ferritic and Austenitic Alloy Steel Boiler, Superheater and Heat-exchanger Tubes ASTM A213 09 10.3-426 x 1.0-36 T5, T5b, T9 , T11, T22 ,T91
Seamless Carbon and Alloy Steel for Mechanical Tubing ASTM A333 1/4"-42" x SCH20-XXS Grade1 Gr. 3,Gr..6, Gr.8 , Gr. 9
Seamless ferritic alloy-steel pipe for high-temperature service ASTM 335/335M 1/4"-42" x SCH20-XXS P5, P9 ,P11, P91, P22, P92
DIN/EN- European Standards for steel

Germany Safety(GS), Deutsches Institut für Normung(DIN)

Product name Executive standard Dimension (mm) Steel code/ Steel grade
Seamless Steel Tubes for Elevated Temperature DIN 17175 10-762 x 1.0-120 St35.8,St45.8, 10CrMo910, 15Mo3, 13CrMo44, STPL340, STB410, STB510, WB36
Seamless Ferritic Alloy Steel Pipes for High Temperature Use EN 10216-2 Ø8"-42" x WT15-100 13CrMo4-5, 1-CrMo9-10, X10CrMoVNb9-1, 15NiCuMoNb5-6-4
Seamless precision steel tube applications EN 10305-1 13.5-165.1 x 1.8-4.85 St33.2
Seamless Precision Steel Tube DIN 2391 4.0-60.0 x 0.5-8 St35, St45, St52
JIS

Japanese Industrial Standards (JIS) specifies the standards used for industrial activities in Japan.

Product name Executive standard Dimension (mm) Steel code/ Steel grade
Carbon steel/Alloy steel boiler and heat exchanger tubes JIS G3461,2 19.05-114.3 x 2.0-14 G3461(STB340, STB410, STB510)
G3462(STBA22, STBA23)
Heat resistant alloy steel pipes that are used for high temperature conveying fluid pipes for heaters and boiler tubes. JIS G3458 10.5-660.4 mm STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, STPA 26
Honed tube

Honed tube

Honed Tubes are ready to use for hydraulic cylinder applications without further ID processing.

Boiler tubes

Boiler tubes are used in heat exchange appliances in which the energy is transferred from one medium to the other.

Boiler tubes


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