Products News

August 19, 2022

Differences between the characteristics of different grades of alloy steel pipes, and application cases

Differences between the characteristics of different grades of alloy steel pipes, and application cases 12CrlMoV This steel has the characteristics of creep limit and lasting strength values are similar, in the long-term stretch, it has high plasticity, its oxidation resistance and thermal strength are higher than 2CrMoV, and the workmanship and weldability are good (preheating before welding, post-welding heat treatment to eliminate stress), generally used after normalizing and high temperature tempering Used to manufacture superheated steel pipes, conduits, radiator tubes and related forgings in high-pressure equipment with working temperatures not exceeding 570 ~ 585 °C 25Cr2MoVA medium carbon heat-resistant steel, […]
August 12, 2022

A691Gr2-1 / 4CrCL22 high temperature and high pressure steel pipe

First, SA691Gr2-1/4CrCL22 is mainly used as welded pipe for power equipment A691 grade is mainly used for high temperature and high pressure carbon steel and alloy steel point melt welded steel nominal pipe Second, SA691 is a high temperature and high pressure reconsideration condition with electric fusion welding steel and alloy steel standards, the grade of steel pipe reaches SA691Gr2-1/4Cr, to go through the effect force treatment, radiographic inspection and water pressure test. SA691Gr2-1/4CrCL22 is a kind of CR-MO heat-resistant steel, the basic components are 2.25% CR, 1% MO. Equivalent to the seamless tube SA-335P22, Maigang A691 is used as […]