For structural seamless pipes, they are usually manufactured from carbon steel, alloy steel, or stainless steel, depending on the specific requirements of the project. Common material standards include ASTM A106 (carbon steel), ASTM A53 (carbon steel) and other related standards. Structural pipes must have high tensile and yield strengths to withstand the structural loads imposed on them. Choosing the right type of steel is critical to meeting these strength requirements.
Unlike welded pipes, seamless steel pipes are more suitable for structural applications. Because the seamless construction eliminates potential weaknesses that welding can introduce, it ensures uniform strength throughout the pipe. In addition, the ends of seamless structural steel pipes can be plain, beveled, or threaded, depending on the design and construction requirements of the project.
To ensure quality, carbon steel structural pipes undergo a series of tests such as tensile testing, impact testing and non-destructive testing. Seamless steel pipes used in general structures need to comply with relevant standards, such as ASTM A500 (for carbon steel structural pipes) or other applicable standards.
Structural alloy steel pipes are widely used in various structural engineering projects, including buildings, bridges, towers and other building structures that require load-bearing capacity.
In addition, Chinese national standard GB/T 8162 and German industrial standard DIN 1629 also have regulations on the use of such steel pipes.
Mechanical behavior
chemical composition
Carbon Steel Structural Tubing
| Usage | OD(mm) | WT(mm) | Steel Grade | Standard/ Specification | Aplication Fields |
| Structural Pipe | 42-760 | 4-120 | 20#,35#,45#,Q345A/B/C/D,Q390, Q420,25Mn,27SiMn etc. | GB/T 8162 | General structural and mechanical pipe |
Structural Pipe, Structural Seamless Pipe, Seamless Structural Pipe
Size:OD: 1/8'' ~ 26'' (10.3 ~ 660mm),WT: SCH 10 ~ 160, SCH STD, SCH XS, SCH XXS
Fixed Length (5.8/6/11.8/12mtr), SRL, DRL
Standard & Grade:ASTM A53/A252/A500/A501, JIS G3444, EN 10210/10219
Square Ends/Plain Ends (straight cut, saw cut, torch cut),Beveled/Threaded Ends
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