Which is good spiral welded pipe / Xin Yi spiral welded spiral pipe up: is the carbon carbon structural steel or low alloy steel strip by a certain helix angle (called molding angle) rolled into a tube, and the tube seam Welding is made up, it can be produced with a narrow strip of large diameter steel pipe. Its specifications diameter * thickness of said pipe should ensure hydrostatic testing, tensile strength and cold bending properties of the weld to be in compliance. Spiral welded pipe is produced by hot-rolled coil. Hot strip rolling process unit has a number of advantages, have access to production capacity of high quality pipeline of metallurgical processes. For example, the output carriage equipped with a water cooling system to accelerate cooling, which allows the use of low alloy composition to achieve the specific intensity level and low temperature toughness to improve the weldability of the steel. However, this system is basically no steel production plant. Alloy content Coil (carbon equivalent) is often less than similar steel grades, it also increases the spiral welded weldability. More should be noted that, since the spiral welded steel pipe coil rolling direction is not perpendicular to the axial direction (depending on the steel pipe which is interposed Solutions helix angle), and the straight pipe joints of steel sheet rolling direction is perpendicular to the steel pipe axial direction, and therefore, the coil crack resistance of the material is better than straight seam welded steel pipe. Xin Yi Steel Tube Group quality of legislation, in good faith Societe Generale. We Xin Yi up confidence, determination and ability to work together colleagues sail, ideal for building a better Cangzhou, China pipeline for manufacturing faster and better development, contribute.