51 steel pipe network: boiler seamless pipe knowledge

The boiler seamless pipe is a type of boiler pipe and belongs to the category of seamless steel pipes. The manufacturing method is the same as that for seamless pipes, but there are strict requirements for the steel grades used in the manufacture of steel pipes. Boiler seamless pipes are often used under high temperature and high pressure conditions. The pipes are subject to oxidation and corrosion under the effect of high-temperature flue gas and water vapor. The steel pipe is required to have high endurance strength, high oxidation corrosion resistance, and good organization stability. The boiler seamless pipe is mainly used to manufacture high pressure and pipe, main steam pipe and so on.
Boiler seamless pipe use 1 General boiler seamless pipe is mainly used to manufacture water-wall pipes, boiling water pipes, superheated steam pipes, superheated steam pipes for locomotive boilers, large and small smoke pipes, and arched brick pipes.
2 The high-pressure boiler seamless pipe is mainly used to manufacture superheater tubes, reheater tubes, air tubes, and main steam tubes of high-pressure and ultra-high-pressure boilers.
3GB3087-82 "Seamless boiler for low and medium pressure boilers" and GB5310-95 "high pressure boiler seamless steel pipe" provisions. Appearance quality: No cracks, folds, pleats, scabs, delaminations, and hair lines are allowed on the inner and outer surfaces of steel tubes. These defects should be completely removed. The depth of clearance shall not exceed the negative deviation of the nominal wall thickness, and the actual wall thickness at the cleaning site shall not be less than the minimum allowed by the wall thickness.
Boiler seamless management theory weight calculation method: (outer diameter - wall thickness) * wall thickness * 0.02466
Learn more about seamless tube knowledge on the 51 steel net official website.

Freeze Dryer/lyophilizer is widely used in medicine, pharmaceuticals, biological research, chemical industry and food and other fields. The freeze-dried articles are easy to preserve for a long time. After adding water, they can be restored to the pre freeze state and retain their original biochemical characteristics.