Seamless Or Welded Carbon Steel Hot Rolled Steel Pipe A691-21/4Cr Round

A691Gr2-1/4CrCL22 is a type of CR-MO heat-resistant steel, with a basic composition of 2.25% CR and 1% MO, which is equivalent to SA-335P22.

Heat-resistant steels can be classified into three categories based on the mass fraction of alloying elements: low-alloy heat-resistant steel, medium-alloy heat-resistant steel, and high-alloy heat-resistant steel.

Alloy steels with a total mass fraction of alloying elements below 5% are generally referred to as low-alloy heat-resistant steels. The alloy series include Mo, Cr-Mo, Mo-V, Cr-Mo-V, Mn-Mo-V, Mn-Ni-Mo, and Cr-Mo-W-V-Ti-B, among others.

For low-alloy heat-resistant steels used in welded structures, the mass fraction of carbon is controlled below 0.02%. For some low-alloy heat-resistant steels with higher alloying element content, standards specify that the mass fraction of carbon should not exceed 0.15%.

Below are the various pipe materials provided by our company:

• Product Types

Seamless steel pipes, seamed steel pipes , pipes made of various types of carbon steel and other special metals

• Standard

GB/T 5310,EN10216-2

ASTM:A672,A691,SA106M,SA335M etc.

• Materials

20G,15CrMoG,12CrlMoVG

SA106-B,C

SA335-P11,P12,P22,P91,P92

15NiCuMoNb5-6-4

A691-11/4Cr,A691-21/4Cr,A672-B70

06Cr19Ni10,SA312-TP347H,304,316L

• Application

Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose