Spiral pipe is also called spiral steel pipe or spiral welded pipe. It is made by rolling low-carbon structural steel or low-alloy structural steel strip at a certain spiral angle (called forming angle) into a tube blank, and then welding the pipe seam.

 biology
Also known as spiral barrel or spiral body. The outer diameter of the spiral tube is about 30 nanometers, the inner diameter is about 10 nanometers, and the distance between adjacent spirals is about 11 nanometers. The spiral tube is surrounded by 6 nucleosomes every week. H1 histones are located on the inner surface of the spiral lumen and play an important role in maintaining the structure of the spiral tube. The 10 nanometer fibers composed of nucleosomes are spiraled into 30 nanometer thick fibers, which further compress the length of DNA by 6 times.
Industrial tube
Spiral pipes are mainly used for oil and natural gas pipelines, and their specifications are expressed by outer diameter * wall thickness. Spiral pipes are welded on one side and on both sides. The welded pipe shall ensure that the water pressure test, the tensile strength of the weld and the cold bending performance meet the requirements.

Cangzhou Shenlong pipe manufacture is a premier worldwide source for carbon steel pipe, stainless steel tube, seamless pipes, welded pipes,galvanized tubes,casing pipes and steel fittings.