-
The difference between hot-dip galvanized steel pipe and cold-dip galvanized steel pipe
Hot-dip galvanizing pipe reacts molten metal with an iron matrix to produce an alloy layer, thereby combining the matrix and the coating. Hot-dip galvanizing is to pickle the steel pipe first. To remove the iron oxide on the surface of the steel pipe, after pickling, it is cleaned in an aqueous s...Read more -
How to solve the deformation problem of spiral submerged arc welded steel pipes
The spiral seam submerged arc welded steel pipe is rotated and drilled and begins to enter the soft formation. Under the action of the three-cone wheel, the drill bit first produces elastic shear deformation of the formation and then is removed under the pressure of the three-cone wheel. In the s...Read more -
Method for preventing quenching cracks of medium and high carbon low alloy steel pipes
(A) If the entire steel pipe is cooled to the martensitic transformation stop temperature (Mf point) or lower by strong water quenching, quenching cracks will occur with high probability. (B) Since the cracks at the time of quenching cracking extend substantially in the axial direction of the ste...Read more -
Features of submerged arc steel pipe
1. The welding process adopted by submerged arc steel pipe is submerged arc welding technology, which uses filler welding and particle protection flux submerged arc. 2. The production process of submerged arc steel pipe includes JCOE forming technology and coil forming submerged arc welding techn...Read more -
Application fields of food sanitary thin-walled stainless steel pipe
The polished thin-walled stainless steel pipe inside and outside on the one hand can be the water supply pipe used for drinking water pipes. It can transport cold water and hot water. This is installed in the water supply pipes of various buildings. The effect is very ideal and can meet the needs...Read more -
Industrial Steel Pipe Fitting type
There are many types of steel pipe fittings, which can be summarized into the following main types: 1. Variable diameter steel pipe fittings refer to the diameter reduction of the pipe end or part of the pipe; 2. Pipe fittings with variable wall thickness refer to change the wall thickness along ...Read more -
Technical requirements for steel pipe fittings
Geometrical dimensions include outer diameter, inner diameter, and wall thickness. It also requires to control the radius of curvature. For example, if the radius length is 1.5d, then the radius of curvature must be within the required tolerance range. Since most of these steel pipe fittings are ...Read more -
Surface processing of stainless steel pipe
There are roughly five basic types of surface processing that can be used for surface processing of stainless steel pipe. They can be combined and used to transform more final products. The five categories are rolling surface processing, mechanical surface processing, chemical surface processing,...Read more -
How to treat the surface of high frequency welded steel pipe
The anti-corrosion layer specification requires the surface of thick-walled steel pipes, and continuously improves the surface treatment methods of thick-walled steel pipes: 1.Cleaning. Solvents and emulsions are used to clean the surface of the steel to remove oil, grease, dust, lubricants, and ...Read more -
Submerged arc steel pipe forming method
Submerged arc steel pipe forming methods include continuous twist forming (HME), roll forming method (CFE), Uing Oing Expanding forming method (UOE), roll bending forming method (RBE), Jing Cing Oing Expanding forming method (JCOE), etc. However, three forming methods, UOE, RBE, and JCOE, are wid...Read more -
Main points of processing technology of large diameter straight seam steel pipes
① The large-diameter straight seam steel pipe, tooth shape, and pitch of the wire head of the processed steel reinforcement thread are consistent with the tooth shape and pitch of the connecting sleeve, and the matching gauge has passed the inspection. ②When processing reinforced threads, water-s...Read more -
Main technological characteristics of spiral steel pipe
a. During the forming process, the steel plate deforms evenly, the residual stress is small, and the surface does not produce scratches. The processed spiral steel pipe has greater flexibility in the size and specification range of diameter and wall thickness, especially in the production of high...Read more