Cold-rolled seamless steel pipes are often of small diameter, and hot-rolled seamless steel pipes are often of large diameter. The accuracy of cold-rolled seamless steel pipe is higher than that of hot-rolled seamless steel pipe, and the price is also higher than that of hot-rolled seamless steel pipe. Cold drawn (rolled) tubes are divided into round tubes and special-shaped…
Read MoreIn order to improve the performance of stainless steel pipe (ss pipe), it is often necessary to adopt certain cold working methods, such as cold drawing, cold rolling, cold rolling, cold bending, cold expansion, cold twisting, etc., which can achieve a certain effect and cause certain damage. Cold working is actually like welding, which will inevitably damage the performance…
Read More1. The application field of pipe is very wide. Pipes are used in many industries. 2. Different industries have different characteristics of different industries, and thus have different technical requirements. 3. Pipe is a relatively mature product, and various industries have corresponding technical standards. 4. Test the pipe, select the corresponding product standard according to the industry in which…
Read MoreThe process performance of seamless steel tubes (smls tube) can be inspected through four aspects: hydraulic (water) pressure test, flattening test, bending test, and flaring test, to test the suitability of the steel pipe’s own quality in the subsequent processing and manufacturing process. Commonly used process performance tests include water pressure, flattening, bending, and flaring tests. Let me share…
Read More1. Grade and chemical composition The grade and chemical composition of the steel for galvanized steel pipes shall comply with the grade and chemical composition of the steel for black pipes specified in GB3092. 2. Manufacturing method The manufacturing method of the black tube (furnace welding or electric welding) is selected by the manufacturer. Galvanizing uses hot-dip galvanizing. 3.Screw…
Read MoreThe control of the wall thickness of seamless steel pipe is a difficult point in the production of steel pipes. The measures to improve the accuracy of the wall thickness in the production mainly include the following aspects: 1. Tube billet heating Heating must be uniform, and rapid temperature rise and fall are prohibited. The temperature rise and fall…
Read MoreStainless steel pipe fittings are a kind of pipe fittings. It is made of stainless steel, so it is called stainless steel pipe fittings. It includes stainless steel elbows, stainless steel tees, stainless steel tees, stainless steel reducers, and stainless steel pipe caps. According to the connection method Can be divided into socket stainless steel pipe fittings, threaded stainless…
Read MoreElbows are used to change the direction of the pipe. The bending angles of commonly used elbows are 90 °, 45 ° and 180 °. The 180 ° elbow is also called a U-shaped elbow. There are also elbows with special angles, but the number is very few. 1. Cast iron elbow Malleable cast iron elbow is the most…
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.
