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Hot-dip galvanized (galvanizing)
Hot-dip galvanized (galvanizing), also known as hot-dip galvanized, it is an effective anti-corrosion of the metal, mainly used in various sectors of the metal structure facilities. The rust steel immersed in liquid zinc melt around 500 ℃, steel members attached to the surface of the zinc layer, ...Read more -
HFW pipe seamless technology
HFW welded steel pipe is always accompanied with the competition and continue to develop a seamless steel pipe. Seamless steel tubes welded steel pipe in order to gradually replace the key is to have high product quality and lower production costs. In order to play HFW pipe wall thickness, geomet...Read more -
Galvanized steel clamp connection technology applications
Galvanized steel pipe with corrosion-resistant, not easy to pollution the transmission medium, which is widely used in domestic water supply systems, fire water systems, heating systems and gas delivery systems. In order to ensure the transmission medium process requirements and corrosion require...Read more -
Difference between seamless and seam pipe
Concentricity: The process of manufacturing seamless pipe is a hole punched out in a stainless steel billet temperature of 2200 ° f the, in this high temperature, the tool steel by stamping and drawing softens and spirally from Kongzhong Cheng-shaped out. So that the wall thickness of the pipe is...Read more -
Comparison of various steel pipes
Seamless steel pipe Wall thickness of seamless steel pipe is relatively thick, relatively small diameter thick. But the diameter is restricted, and its applications are limited, and production costs, especially for large diameter seamless steel pipe production costs are relatively high. High-freq...Read more -
Cold drawn tube fracture
Generation of cold drawn tube fracture When steel tube cold-drawn, due to the hot rolled billets be made after the tank, the presence of defects such as cracks, or high-precision cold drawn tube fracture occurred during use, almost no plastic deformation occurs, generally are brittle fracture. Br...Read more -
Boiler tube
Boiler tube quality problems Boiler tube quality problems mainly in the cracks, shrinkage, peeling, pit, layered, pinhole, slag and so on. Boiler tube defects and injuries that may exist in the same smelting and rolling process. The main defects in the surface of the boiler tube and an outer surf...Read more -
API 5L welded steel pipe
API early in 1926 released by the American Petroleum Institute (API) API-5L standard, initially including three steel grade A25, A, B, and later released several times. Prior to 2000, the worldwide use X70, about 40%, X65, X60 are in the 30%, a considerable number of small-caliber product oil pip...Read more -
Large steel pipe welding
In the large diameter pipe welding process, the workpiece and form a molten solder is melted region, the connection between the material cooled and solidified after the formation of the pool. Large diameter thick-walled tube usually need to apply pressure in welding process. Welding energy source...Read more -
Influencing factors of bright annealing stainless steel pipe
Annealed stainless steel tube brightness determines the quality of the product. Too many factors, listed five important factors for reference. 1, The annealing temperature reaches a predetermined temperature. Stainless steel heat treatment is generally taken to solution heat treatment, that is, p...Read more -
Galvanized steel pipe anti-corrosion requirements
The usage of galvanized steel pipe is getting high, then the requirements of galvanized pipe is more, it was proposed the galvanized pipe completely different resistance to rust (rot) eclipse, which is platedzinc tubes manufacturers challenges, galvanized pipe has what the world demands. Galvaniz...Read more -
ERW pipe weld joint heat treatment process online
The most important feature of erw steel pipe is no foreign filler metal, heating speed, high production efficiency, which is an advantage, but also its shortcomings, which is no filler metal, the filler alloy will not benefit approach to improve the weld properties element; heating temperature is...Read more