Introduction of commonly used steel pipes-spiral seam submerged arc welded steel pipe The strip steel is bent into a spiral shape, and the inner and outer seams are welded by automatic submerged arc welding to make spiral seam steel pipe. It can be widely used in the production of large diameter ste

Submerged arc steel pipe has become the steel pipe of large-scale oil and gas transportation projects at home and abroad due to its large wall thickness, good material quality and stable processing technology. In large-diameter submerged arc steel pipe welded joints, the weld seam and heat-affected

1. Petroleum: Petroleum pipelines, process pipelines for transporting corrosive media in chemical and pharmaceutical, printing and dyeing industries;2. Fire protection: Applicability to water supply pipelines of sprinkler and sprinkler systems;3. Expressways: cable protection sleeves for power, comm

1. The production process is simple.2. Less equipment, simple structure, lightweight, easy to realize continuous, automatic, and mechanized production.3. Low product cost.4. It is suitable for a wide range of varieties and specifications, with a diameter of 6-3100mm and a wall thickness of 0.3-35mm.

Product name: Steel angle bar and Square steel pipeStandard: ASTM A36, ASTM A500Size: Steel angle bar: 3 x 2 x 3/16Square steel pipe: 12 X 12 X 1/2Application: Industrial bridge construction project

Overview of Pickling of Precision Seamless Steel PipeThe method of using an acid solution to remove the oxide scale and rust on the surface of the steel is called pickling. Iron oxides such as scale and rust (Fe3O4, Fe2O3, FeO, etc.) react chemically with the acid solution to form salts that are dis

Choose the welding process1. Root weldingPre-heating before welding: X70 steel grade is higher and has a strong tendency to crack. It must be pre-heated before root welding, and the groove and its surroundings must be heated to 80-120°C before root welding. 2. Root welding: E6010 cellulose downward

A. The feature of non-destructive testing is that it can be tested without damaging the material and structure of the test piece, so after the implementation of non-destructive testing, the inspection rate of the product can reach 100%. However, not all items and indicators that have to be tested ca

Plastic-coated steel pipes, also known as plastic-coated pipes, steel-plastic composite pipes, and plastic-coated composite steel pipes, are based on steel pipes. A layer of plastic anti-corrosion layer or plastic anti-corrosion layer is fused to the inner surface of the steel pipe (bottom pipe) thr

The casting measures for stainless steel pipe fittings are: 1. Since the shrinkage of stainless steel pipe fitting casting is much greater than that of cast iron, to prevent shrinkage cavities and shrinkage porosity d