The use of thick-walled steel pipe and the difference between the thick-walled steel pipe and the thin-walled steel pipe, the ratio of the outer diameter and wall thickness of the steel pipe is less than 20 thick steel pipe. It is mainly used as petroleum geological drilling pipe, cracking pipe for petrochemical industry, boiler pipe, bearing pipe, and high-precision structural pipe for automobiles, tractors and aviation.
The biggest difference between thick-walled steel tubes and thin-walled steel tubes is the thickness of the steel tube walls. Generally speaking, thin-walled steel tubes are cold-drawing techniques, while thick-walled steel tubes generally use hot-drawing technology. If they are differentiated by measurement units, then It is generally accepted that the wall thickness/diameter equal to 0.02 is the watershed of the thick-walled steel pipe and the thin-walled steel pipe. The wall thickness/diameter of less than 0.02 is a thin-walled steel pipe, which is larger than a thick-walled steel pipe. In terms of use, the thin-walled steel pipe is commonly used. On the pipeline. Thick-walled steel tubes are mostly used for blanks in hollow parts. Pressure and use on important pipelines.
High Speed self-Recovery Rapid doors are the technological evolution of old, PVC high speed doors or heavy folding doors, now obsolete and not suited to today's industrial needs.
High-quality panels, the resistive safety edge fitted to the bottom edge of the door, photocells and barriers make this product both safe and durable, being totally self-repairing, thanks to its special [Anti Crash System".
This door designed with a perimeter structure in galvanized or stainless steel, which is ideal for sliding panels. The door panel rides effortlessly within a track, thanks to the special profile and hinge designed by us, requiring low maintenance. The panel is rolled up on a roller placed within the upper crossbeam.
The door can be equipped with a counterweight or ups batteries, to fully open the door in case of power failure, and can also be equipped with large transparent sections to create a brighter and safer working environment.
Self-Repairing Door Curtain made of reinforced PVC, with flexible weighted soft bottom edge.
The edge of curtain has continuous injection molded teeth that then move up and down in a self-lubricating polyethylene track attached to structural galvanized side frames.
Self-Recovery Rapid Door,Self Recovery PVC Rapid Door,Self Recovery Rapid Rolling Door,Self Healing Roll Door
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hfautodoors.com