The basic manufacturing process of thick wall P22 seamless alloy pipe is: melting, blank making, extrusion and annealing heat treatment. (1) Smelting P91 steel has high alloy content. How to complete the alloying of steel in a short time is the key of smelting process. P22 seamless alloy pipe is smelted by 50t power electric arc furnace + 5T…
Read MoreDefinition of carbon steel seamless steel pipe: carbon steel seamless steel pipe is a kind of long steel with hollow section, which is widely used as pipeline for conveying fluid, such as pipeline for conveying water, natural gas, oil, gas and some solid materials. Compared with solid steel such as round steel, steel pipe has the same flexural and…
Read MoreUnder the background of advocating low-carbon, energy conservation and environmental protection, all kinds of transportation machinery are also developing in the direction of lightweight. In this paper, the mature TRIP steel production technology is applied to the production of steel pipe, and the thin-walled TRIP steel seamless pipe with ferrite, bainite, residual austenite and a small amount of martensite…
Read MoreThe mechanical properties of steel are important indicators to ensure the final performance of seamless pipe, which depends on the chemical composition and heat treatment system of the steel. In the seamless pipe standard, according to different use requirements, the tensile properties, hardness and toughness indicators, as well as the high and low temperature properties required by users, are…
Read MoreAlloy seamless pipe is a pearlite heat-resistant alloy structural steel, which has good high-temperature mechanical properties, high plasticity during cold deformation, no tempering brittleness tendency, good machinability and acceptable weldability. It is generally used under high-temperature normalizing and high-temperature tempering; It is mainly used for superheater tubes with working temperature of 570 ~ 585 ℃ in pressure boiler, pipeline…
Read MoreERW pipe adopts electric resistance welded technology, and the welding quality control in the process is very important. The general method is as follows: 1. Product damage inspection procedures Destruction inspection shall involve inserting a tool or device between the welded part and the part adjacent to the weld until the components are completely separated. The diameter of the…
Read MoreWhat are the processing methods of stainless steel welded pipe? What should be paid attention to in processing? Cold drawing deep processing: it is easy to generate friction heat, so the stainless steel pipe with high pressure resistance and heat resistance shall be formed at the same time. After processing, the oil attached to the surface shall be removed….
Read More(1) Cold-drawn or cold-rolled anticorrosive spiral steel pipes with a wall thickness of not more than 1.5 mm; welded steel pipes with a wall thickness of not more than 1 mm and surface-polished rolled stainless steel pipes shall be packed in strong wooden or iron boxes. (2) Each box should be steel pipes with the same contract number. When…
Read MoreXINYUE STEEL GROUP set up several production bases in Tianjin & Hebei Province, manufacturing ERW Steel Pipe, SSAW Steel Pipe, LSAW Steel Pipe, Seamless Steel Pipe, Scaffolding system and couplers, RHS, SHS, etc.
