Characteristics of boiler pipe
Boiler tubes often in high temperature and high pressure work, pipe smoke and water at high temperature steam oxidation and corrosion effects will occur, thus requiring durable steel with high strength, high oxidation resistance, and good organizational stability, high pressure boiler tube in addition to chemical composition and mechanical properties, hydrostatic testing done by the root, to be flaring, flattening test. Steel to heat treatment delivery. In addition, the finished steel microstructure, grain size, there are certain requirements decarburization.
High-pressure boiler tubes are seamless steel pipe categories. Seamless same manufacturing method, but used in the manufacture of steel pipe, there are strict requirements. Often in high-pressure boiler tubes at high temperature and pressure conditions of use, the tube under the effect of high temperature gas and water vapor, oxidation and corrosion will occur. Require durable steel with high strength, high resistance to oxidation corrosion, and have good organizational stability. High-pressure boiler tube is mainly used to manufacture high-pressure and high pressure boiler superheater tubes, reheater tubes, windpipe, the main steam pipe. High-pressure boiler tubes for low and medium pressure boiler (working pressure is generally not more than 5.88Mpa, working temperature below 450 ℃) of heating surface tubes; used for high-pressure boilers (above 9.8Mpa working pressure in general, the working temperature of 450 ℃ ~ 650 ℃ between) the heating surface tubes, economizer, superheater, reheater, petrochemical industrial pipe
Characteristics of cold-rolled stainless steel seamless pipe
Cold-rolled stainless steel seamless pipe is with formability, surface finish, thickness and flatness tolerances. Iron and steel production and low-or ultra-low carbon grades to meet a variety of customer formability requirements: CS B-type B-type DS, EDDS, EDDS +. They also make these applications that require a specified intensity level of the HSLA steel and structural steel grades.
Cold-rolled stainless steel seamless pipe can also be designated as a dent-resistant or formed after the bake-hardening and painting applications that require dent resistance. Each level can have several surface finishes according to customer requirements. It can be used in lubricants, in order to improve the formability, in order to avoid pressure lubrication.
Cold-rolled stainless steel seamless pipe has the following characteristics:
1, good surface appearance. Cold-rolled seamless pipe production controls are in place to ensure a consistent surface quality to meet customer requirements.
2, the formability. used to produce parts and components, contains a simple bending extreme deep drawing requirements of the parts.
3 paint. Stringent surface roughness control, cold-rolled seamless pipe is easy to paint, and basically use any paint system.
4, weldability. Add the cold-rolled steel can use almost any accepted welding practices.
Post time: Oct-11-2019