Q345GJC steel pipes, especially Q345GJC straight seam steel pipes, are widely used in many fields such as construction, bridges, and machinery manufacturing. The following is a detailed introduction to Q345GJC steel pipes and the production and processing of Q345GJC straight seam steel pipes:
First, an overview of Q345GJC steel pipes
Q345GJC steel pipes are a type of high-strength, high-performance steel pipe, whose chemical composition mainly includes carbon (0.180.28%), silicon (0.10.55%), manganese (1.62.0%), phosphorus (≤0.025%), sulfur (≤0.015%), chromium (≤0.25%), and nickel (≤0.25%). These chemical compositions give Q345GJC steel pipes excellent mechanical properties and processing properties, such as tensile strength (490630MPa), yield strength (≥345MPa), elongation (19%), and cross-sectional shrinkage (43%). In addition, Q345GJC steel pipes also have high toughness, hardness, and wear resistance, and can meet the use requirements in various complex environments.
Second, Q345GJC straight seam steel pipe production and processing
- Material selection: The material of Q345GJC straight seam steel pipe is Q345GJC steel, which has excellent mechanical properties and processing properties and is suitable for manufacturing straight seam steel pipes.
Production and processing process:
- Billet preparation: Select Q345GJC steel plates that meet the requirements as billets and cut them according to the required steel pipe specifications.
- Forming: Roll the billet into a tube shape through a plate rolling machine and pre-weld it.
- High frequency welding: The pre-welded pipe seams are welded using high frequency welding technology to ensure the strength and sealing of the welds.
- Submerged arc welding: The welds after high frequency welding are subjected to submerged arc welding to further improve the quality and strength of the welds.
- Straightening and finishing: The welded steel pipes are straightened to eliminate the deformation and stress caused by welding and then finished to achieve the required size and shape.
- Inspection and testing: The processed Q345GJC straight seam steel pipes are strictly inspected and tested, including appearance inspection, weld flaw detection, water pressure test, etc., to ensure that their quality meets relevant standards and requirements.
Production and processing features:
- Customized production: The processing specifications of Q345GJC straight seam steel pipes (such as outer diameter, wall thickness, length, etc.) can be customized according to specific usage requirements.
- High-efficiency production: The use of advanced welding processes such as high frequency welding and submerged arc welding can greatly improve production efficiency and quality.
- Wide range of application fields: Q345GJC straight seam steel pipe has high strength, high performance, and excellent processing performance, and is widely used in high-rise buildings, bridges, machinery manufacturing, and other fields.
Third, the application of Q345GJC steel pipe
Q345GJC steel pipe has a wide range of applications in construction, bridges, machinery manufacturing, and other fields due to its excellent mechanical properties and processing performance. Especially in the construction of high-rise buildings and bridges, Q345GJC steel pipe can withstand greater pressure and impact force to ensure the safety and stability of the building. In addition, the Q345GJC steel pipe can also be used to manufacture various mechanical parts and structural parts, such as steel scaffolding for oil drills.
In summary, Q345GJC steel pipe and Q345GJC straight seam steel pipe have excellent performance and broad application prospects. In the production and processing process, it is necessary to strictly control the quality and process parameters of each link to ensure that the quality and performance of the product meet the relevant standards and requirements.
Post time: May-21-2025