Cleaning: first， clean the grease， dust and other substances attached to the surface of the galvanized pipe after cleaning.
6Metric welded pipe: it is used as seamless pipe in standard. The welded steel pipe expressed by outer diameter * wall thickness mm is welded by hot and cold strip welding of general carbon steel， high-quality carbon steel or Puneng low alloy steel， or it is made by cold drawing after hot strip welding. Metric welded pipe is generally used as structural parts， such as transmission shaft，Products Show or to transport fluid. The thin wall is used to produce furniture and lamps. It is necessary to ensure the strength and zigzag test of steel pipe.
dSaint spiritusWhat is the purpose of flat steel
However，كوباأنا الصلب الشعاع 18 كمنطاق المشروع compared with plastics， these pipes， like other metals， remain stable and will not be affected by high temperature.
ZEpping Spiral seam high-frequency welded steel pipe (sy- for general low-pressure fluid transportation takes hot-rolled steel strip coil as pipe blank and is often spiral formed at warm temperature. High frequency lap welding method is selected for welding spiral seam high-frequency welded steel pipe for general low-pressure fluid transportation.
VkThe pipeline shall be positioned according to the drawing design， and the pipeline support shall be prefabricated according to the site conditions. Hang the wire from the th floor down and fix the support.
Main machines and tools
The reinforcement mesh is used for embankment protection or for the protection of the whole riverbed and river bank， which is more suitable for the river channel with relatively gentle original bank slope. Taking the design dry water level as the boundary， the upper part is slope protection works and the lower part is foot protection works.
uMethods of exerting efficiency in application of C-section steel
C Manganese: it can improve the strength of steel， weaken and eliminate the adverse effects of sulfur， the quality of galvanized pipe can also be guaranteed.
sY According to the purpose the welded pipe has general purpose and high temperature and high pressure. The pipe used in the latter is often special alloy steel. The problem of shrinkage cracks in the welding process and the mechanical properties of the pipe in the heat affected zone must be considered and solved，Products Show and the mechanical properties of the pipe in the heat affected zone will not be greatly changed due to the influence of welding operation.
Galvanized pipe has excellent corrosion resistance. Compared with traditional steel， its application life is longer. Secondly， this kind of pipe has strong resistance to baking. In case of critical situation， it will not lead to the collapse of building structure in a short time. In addition， this kind of pipe also has a practical advantage， that is it is more convenient and lighter when carrying out the construction and installation. The operators save time and labor when carrying out the construction， and the operation efficiency has been greatly strengthened. In this regard， it is not difficult to understand why the galvanized pipe is so favored by various construction units.
According to the purpose， and the mechanical properties of the pipe in the heat affected zone will not be greatly changed due to the influence of welding operation.
assetsiGalvanized pipes are designed to maintain high enough corrosion resistance.
RGB No. I-beam is in height， in leg width and in waist thickness.
Chromium can improve the hardenability and wear resistance of steel，Products Show and improve the corrosion resistance and oxidation resistance of steel
xSaint spiritusHowever， compared with plastics，كوباأنا الصلب الشعاع 18 كمنطاق المشروع these pipes， like other metals， remain stable and will not be affected by high temperature.
kQ Because the zinc coating has excellent ductility， it can be formed by cold stamping， rolling， bending and so on without damaging the coating.
Longitudinal welded pipe has the advantages of simple production process， high production efficiency， low cost and rapid development. The strength of spiral welded pipe is generally higher than that of straight welded pipe. It can produce welded pipe with larger pipe diameter with narrow blank，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd and welded pipe with different pipe diameter with blank of the same width. However， compared with the straight seam pipe with the same length the weld length increases by ~ ， while small welded pipes and thin-walled welded pipes only need to be welded directly through steel strip. Then after simple polishing， wire drawing is OK. Welded pipe is welded with strip steel， so it is not as high as seamless pipe in its original position. Welded pipe process: uncoiling of raw materials - leveling - end shearing and welding - looper - forming - Welding - removal of internal and external weld beads - pre correction - induction heat treatment - sizing and straightening - eddy current testing - cutting - hydraulic inspection - Pickling - Inspection (strict control) - Packaging - delivery.