Seamless alloy steel boiler tubes has a hollow cross section, which is used in a large number of pipes for conveying fluids, such as pipes for oil, gas, water and certain solid materials. They are divided into hot rolled tubes, cold drawn tubes and extruded tubes according to the production methods. The shapes can be round, square, elliptical, triangular, hexagonal, etc.
OD:10-530mm
Wall thickness:1.5-70mm
Length: 5.8-12m
Standards and Applications
Standards | Grades | Class |
ASTM | ASTM A179 | for seamless Cold-drawn low-carbon steel heat-exchanger and condenser tubes |
ASTM A192 | for seamless carbon steel boiler tubes for high-pressure service | |
ASTM A210 | for seamless medium-carbon steel boiler and superheater tubes | |
ASTM A333 | for seamless steel pipe for low-temperature service and other applications with required notch toughness | |
ASTM A519 | for seamless carbon and alloy steel mechanical tubing | |
ASTM A252 | for seamless and welded steel pipe piles | |
DIN | DIN 17175 | for heat resistant seamless steel pipe lines |
DIN 1629 | for seamless circular tubes of non alloys steels wth special quality requirements | |
DIN 2391 | for cold drawn or cold rolled precision seamless steel tubes | |
JIS | JIS G3454 | seamless carbon steel pipe for pressure service |
JIS G3456 | seamless carbon steel pipe for high temperature service | |
JIS G3461 | seamless carbon steel pipe for boiler and heat exchanger | |
EN | EN 10210 | for hot finished seamless structural hollow sections of non-alloy steels |
EN 10216 | seamless steel tubes for pressure purposes |
Application
Compared with solid steel such as round steel, the seamless alloy steel boiler tubes are lighter when it has the same bending and torsional strength. It is an economical section steel and widely used in the manufacture of structural parts and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycles. Steel frames and other steel scaffolding used in construction are manufactured into ring-shaped parts, which can improve the material utilization rate, simplify the manufacturing process, save materials and processing man-hours.
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