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Difference Between ERW SSAW LSAW
Steel pipe for pipe technology, can be divided into (SML), mainly as the Oilfield internal transportation pipeline and small-diameter high-pressure natural gas pipeline, used for a small number of long-distance gas pipeline, the vast majority of long-distance pipeline with Direct seam high freque...Read more -
Defect detection on steel pipe surface with alternating magnetic flux leakage detection system
Industrial pipe work in very poor conditions, prone to corrosion and fatigue damage or become damaged due to the development of the potential pitfalls of the pipeline within the spill. Especially oil pipelines and gas pipelines in the long-term use, due to the unstable surface foundation, corrosi...Read more -
Large Diameter Seamless Steel Pipe
Large diameter seamless steel pipe means outside diameter more than 100MM and the wall thickness is greater 0.2 than the outer diameter of the pipe, Large-diameter seamless steel tube is made from solid tube ingot or the perforation capillary, then through hot rolling and cold rolling or cold dia...Read more -
Impact test of precision steel pipe
By impact test different metal mild steel, steel and other industrial iron and T8 impact absorbed energy at different temperatures, the determination of low-carbon steel ductile-brittle transition temperature, relatively ductile-brittle transition metal observed characteristics. Toughness is the ...Read more -
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