Home > News > Content
Selection Of Seamless Steel Tubes
Oct 29, 2018

1. Seamless steel pipe for low and medium pressure boilers

It is used to manufacture various low and medium pressure boilers, superheated steam pipes, boiling water pipes, water wall pipes and superheated steam pipes for locomotive boilers, large smoke pipes, small smoke pipes and arch brick pipes. Hot-rolled or cold-rolled (dial) seamless steel tubes are made of high-quality carbon structural steel. It is mainly made of steel No. 10 and No. 20. In addition to ensuring chemical composition and mechanical properties, it is required to carry out hydraulic test, crimping, flaring and flattening. Hot rolling is delivered in a hot rolled state, and cold rolled (dial) is delivered in a heat treated state.

2. Petroleum cracking tube

Seamless tubes for furnace tubes, heat exchanger tubes and pipes used in petroleum refineries. It is made of high quality carbon steel (10, 20), alloy steel (12CrMo, 15CrMo), heat resistant steel (12Cr2Mo, 15Cr5Mo), stainless steel (1Cr18Ni9, 1Cr18Ni9Ti). In addition to the chemical composition and various mechanical properties, the steel pipe must also ensure water pressure, flattening, flaring and other tests, as well as surface quality and non-destructive testing. The steel pipe is delivered under heat treatment.

3, stainless steel tube

Hot-rolled, cold-rolled stainless steel tubes of various stainless steels are widely used in petroleum, chemical equipment pipelines and stainless steel structural parts for various purposes. In addition to ensuring chemical composition and mechanical properties, steel pipes used for fluid pressure are required to ensure water. The pressure test is qualified. All kinds of special steel pipes should be guaranteed according to the regulations.