Below are spiral steel pipe manufacturers for your reference:

Yanshan Yutong Pipe Co., Ltd.: Produces and sells large-diameter thick-walled standard spiral steel pipes, with in-house processing for anticorrosion, insulation, and plastic coating. Huatong Pipe: Utilizes advanced production technology and imports American manufacturing equipment. Middle East Pipe: Products have a lifespan of 50 years, with national quality warranty, producing spiral steel pipes for natural gas, oil pipelines, water supply projects, etc. Shengzhong Pipe: Offers a complete range of specifications, supports customization, ships promptly, and provides high-quality insulated and anticorrosive spiral steel pipes. Cangzhou Youcheng Pipeline Industry Co., Ltd.: Offers low prices, reliable quality, stable operation, full range of specifications, and can provide detailed product parameter images, customization services, etc. There are many manufacturers of spiral steel pipes; it is recommended to choose a suitable one based on your needs.

Foshan Shunde Langyao Iron and Steel Co., Ltd. was established on May 11, 2015. The legal representative is Huang Songming, and the company is engaged in the sale of steel products and domestic commercial activities.

In common spiral steel pipe materials, the strength of Q345B is primarily reflected in the following aspects:

Tensile Strength: The tensile strength of Q345B is 370~500 N/mm², while that of Q235B is only 230~340 N/mm². This means the tensile strength of Q345B is higher than that of Q235B.

Yield Strength: The yield strength of Q345B is ≥320 MPa, while that of Q235B is ≥195 MPa. This means the yield strength of Q345B is higher than that of Q235B.

Tensile elongation: The elongation rate of Q345B is ≥19%, while that of Q235B is ≥21%. Although the difference in elongation rates is not significant, it still indicates that Q345B has better plastic deformation capabilities.

In summary, among common spiral steel pipe materials, Q345B has a high strength.