Q345D seamless steel pipe with small outer diameter can be called small diameter seamless steel pipe. Small diameter seamless steel pipe can also be divided into: seamless small diameter steel pipe and straight seam (also known as welding) small diameter seamless steel pipe, generally below 89mm of the outer diameter of the steel pipe, more than 4mm; Can be collectively referred to as small - caliber seamless steel pipe.
GB/T8162 Q345D seamless pipe chemical composition
|
Grade |
C % |
Si % |
Mn % |
Cr % max |
Ni % max |
Cu % max |
P % max |
S % max |
|
Q345D |
< 0.18 |
< 0.50 |
< 1.70 |
0.30 |
0.50 |
0.30 |
0.30 |
0.30 |
GB/T8162 Q345D seamless pipe mechanical properties
|
Steel grade |
Tensile strength Rm/MPa |
Yield Strength Rel/MPa |
Break elongation A% |
|
Q345D |
470-630 |
>345 |
21 |
Q345D small caliber seamless steel tube is a kind of round, square and rectangular steel with hollow section and no joints around it. Seamless steel tubes are made of ingots or solid billets perforated into capillary tubes and then rolled, cold rolled or cold rolled. Q345D seamless steel pipe is hollow section, a large number of used for conveying fluid pipe, steel pipe and round steel, compared to solid steel in the bending torsional strength phase at the same time, the weight is lighter, is a kind of economic cross section steel, widely used in the manufacture of structural and mechanical parts, such as petroleum drill pipe, auto transmission shaft, bicycle frame and construction of steel scaffolding is used.
If you need Q345D small bore seamless steel pipe, please feel free to contact us for quotation.
