Galvanized pipe: the zinc layer of cold galvanized pipe is an electroplating layer and the zinc layer is separated from the steel pipe substrate. The zinc layer is very thin. The zinc layer is simply attached to the steel pipe substrate and is easy to fall off. Therefore， its corrosion resistance is poor. In new homes， it is forbidden to use cold galvanized pipes as water supply pipes.
5There are five main guarantee measures for steel pipe welding. If these five aspects are guaranteed， the quality of galvanized pipe can also be guaranteed.
prequirement Hot push hole diameter. More sensitive applications and facilities of such methods require simplicity， low cost， easy maintenance，Products Show elbow and similar products. You only need to add some spare parts. The expansion method of hot push can be used to process and manufacture large-diameter，GuazarAlloy pipeWhat is theality of thick wall and thin alloy steel pipes， and can not exceed the working capacity of thick wall pipes of machinery and equipment.
Straight seam welding is adopted for larger diameter welded pipe， and spiral welding is mostly adopted for large diameter welded pipe; According to the top appearance of seamless steel pipe， it is divided into annular welded pipe and special-shaped (square， pitch， it is divided into mining anti liquid transportation welded steel pipe， hot-dip galvanized welded steel pipe for bottom pressure liquid transportation， continuous conveyor idler electric welded steel pipe， etc. it is arranged from small to large according to diameter * wall thickness according to the specification，Products Show model and dimension table in the current standard.
OIwagThin wall steel pipe， thick wall steel pipe.
ZkIn hardware， you can choose an incomplete performance outside the product. Some construction experts claim that if there is a mechanical effect on these products， they are not suitable. At least this product is impossible.
Carbon: the higher the carbon content， the higher the hardness of steel， but the worse its plasticity and toughness
As long as the pipe material is high-strength alloy steel， including alloy steel pipes with temperature resistance， pressure resistance， wear resistance and low temperature resistance the welding process shall be focused on preventing the tendency of martensite structure and cracks due to welding high-temperature operation. The general process requirements are that the welding rod shall be selected and baked as required and sent to the welder for use. The oil and water shall be removed before welding on both sides of the weld Rust and sundries shall be removed and cleaned. The welding line energy shall be as small as possible to minimize the swing during the welding process. The arrangement of the last weld shall have annealing effect on the heat affected zone as far as possible. Slow cooling after welding， cover with asbestos cloth，Products Show etc.
m The small length of repair welding is mm; The raw material shall not exceed mm after grinding by welding edge.
PCompared with manual binding， welded steel mesh can reduce the occurrence of cracks by more than %. The use of reinforcement mesh can make the project construction faster. As long as the reinforcement mesh is laid as required，GuazarAlloy pipeWhat is theality of the concrete can be poured， eliminating the links of reinforcement on-site cutting， placing one by one and binding. It can save % - % of working hours， it will not only waste resources， but also lead to work efficiency， rework and restart， and waste financial resources.
wEThe 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.
This phenomenon is affected by cooling rate， material composition and heat treatment process. The faster the cooling rate，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd the higher the carbon content and alloy composition， the greater the plastic deformation non-uniformity and residual stress caused by thermal stress during cooling.
The monthly summary of the real estate industry shows that there is a significant positive correlation between the market sales and the long-term trend of the apparent consumption of galvanized pipe， but there will also be a backwardness of the market in a special stage， and after the backwardness of the market in stages， there will be a rapid decline in the moving average of the apparent consumption of galvanized pipe welded steel pipe and so on.
discountn The zinc coating is thick， the crystallization is detailed， uniform and non porous， and the corrosion resistance is excellent;
ZI-beam can be divided into four types according to shape: cold-formed equal edge I-beam， cold-formed unequal edge I-beam， cold-formed inner crimping I-beam and cold-formed outer crimping I-beam.
The multi-al combination of reinforcement mesh welding machine and reinforcement mesh row welding machine based on PLC basic control. At present， the full-automatic mesh welding machine has the characteristics of simple operation， high control precision and easy to master the process of high-speed continuous welding.
orequirementClassification by production method
kSIt bears high internal working pressure.
Spiral seam high-frequency welded steel pipe (sy- for pressure fluid transportation is a spiral seam high-frequency welded steel pipe used for pressure fluid transportation， which takes hot-rolled steel strip as pipe blank， often warm spiral forming and high-frequency lap welding method. The steel pipe has strong pressure bearing capacity and good plasticity， which is convenient for welding and processing; After various strict and scientific inspections and tests， the application is safe and reliable， the diameter of steel pipe is large， the transportation efficiency is high， and the investment in laying pipeline can be saved. It is mainly used for laying pipelines for transporting oil， natural gas， etc.