Galvanized pipes shall be stored in dustproofto keep clean and new . As a professional manufacturer of galvanized pipe， 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.
XqThis phenomenon is affected by cooling rate， material composition and heat treatment process. The faster the cooling rate， the higher the carbon content and alloy composition， the greater the plastic deformation non-uniformity and residual stress caused by thermal stress during cooling.
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，Products Show its corrosion resistance is poor. In new homes，ناسو40Cr سبيكة أنابيبفحص الجودة it is forbidden to use cold galvanized pipes as water supply pipes.
The tensile strength of seamless pipe is more than ~ times that of ordinary steel the elastic coefficient is better than that of steel， and has good creep resistance， corrosion resistance and seismic resistance.
iWhen we carry out different projects， we must use different raw materials， which can ensure the quality of the project. In many kinds of data， alloy pipe is widely used. In many projects， we will apply it， so it is very popular in the field. When people carry out the construction of alloy pipe project， there are many things that must be paid special attention to. Let&#;s take you to know:
VThe reinforcement mesh of the maintenance platform has the characteristics of extensive application，Products Show beautiful style， Skirting plate (edge guard plate)， checkered plate guard plate， installation of connectors and other accessories can be added around. The reinforcement mesh is suitable for the reinforcement mesh manufactured in the factory and welded with cold-rolled ribbed reinforcement or cold-rolled smooth round reinforcement. The welded reinforcement mesh for reinforced concrete is a good and efficient material for concrete distribution. Flat steel with different specifications can be used for edge wrapping Or wrap edges with angle steel， channel steel， square tube， etc; Handles and hinges can also be installed on the reinforcement mesh that needs to be moved or opened frequently.
OLatest consultationGenerally in terms of strength toughness and mechanical properties. There are many differences. Hot dip galvanized pipe: the coil formed by welding the square pipe with steel plate or steel strip is placed in the galvanized tank on the basis of the square pipe to form a series of chemical reactions on the square pipe. The production process of hot-dip galvanized steel pipe is simple， the production efficiency is very high， and there are many varieties and specifications. The demand for RHS by equipment and capital is very small， which is suitable for the production of small galvanized steel pipe plants. However，Products Show the strength of steel is much lower than that of seamless steel pipe. It is mainly used for drying， redox method and characteristic table.
sUThe storage of galvanized pipes should pay attention to several points. The first is the storage location. It cannot be placed in the open air，ناسو40Cr سبيكة أنابيبفحص الجودة because in the open air， not only the safety of various products such as theft， but also corrosion problems will occur. Open air sites are vulnerable to various extreme weather conditions. Large amounts of rain or snow will erode the zinc coating on the surface to the greatest extent， which may lead to rust of the product. The second is the details of storage. It is not directly exposed to the sun. It shall be cooled and dried and shall not be stored with corrosive articles.
If the steel pipe is not welded well， that is， if it is not welded， the welding conditions of steel mesh skeleton composite pipe shall be provided.
Spiral seam submerged arc welded steel pipe for general low-pressure fluid transportation (SY / t- is a submerged arc welded steel pipe for general low-pressure fluid transportation such as water， gas，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd air and steam， which is made of hot-rolled steel strip coil as pipe blank， often warm spiral forming and double-sided active submerged arc welding or single-sided welding.
Finance DepartmentnThe second is the control of welding materials to ensure that the welding materials purchased are from formal channels， which meet the process requirements; The recovery of welding rod head shall be strictly controlled to ensure the flow direction and dosage; Welding materials shall be baked in strict accordance with the process， and the amount of one-time distribution shall not exceed half a day.
LAlloy pipes can be used for heating (cooling) projects.
Special shaped pipe: square pipe， rectangular pipe， cap pipe， steel pipe for hollow rubber steel doors and windows welded by general carbon structure steel and Mn steel strip， steel windows and doors， etc.
lMontreal Stair step plate (stair step plate) is a kind of stair used for platform with steel bar mesh. According to the installation method， it generally has two types: welding fixation and bolt (composition: head and screw). It is directly welded to the keel and does not need the side plate with step plate. It is relatively economical and durable， but it is not easy to disassemble， Thickened side plates are required on both sides of the bolted tread plate， and holes are drilled on the side plates.
rZPipelines of various specifications and models are complete.
General welded pipe: General welded pipe is used to transport low-pressure fluid. It is made of qa， qa and QA steel. It can also be made of other mild steel that is easy to weld. Water pressure， zigzag， flattening and other tests shall be carried out for steel pipes， and there are certain requirements for surface quality. Generally， the delivery length is -m， and fixed length (or double length) delivery is often required. The standard of welded pipe is expressed in nominal diameter (mm or inch). The nominal diameter is different from the actual. Welded pipe can be divided into general steel pipe and thickened steel pipe according to the specified wall thickness， and steel pipe can be divided into threaded and non threaded according to the way of pipe end.