6 The development of steel mesh has met the soft and hard conditions.
lSan Pablo However， what we need to do now is to improve the production technology level of Chinas production process of C-section steel， and step up the formulation of relevant industry standards and inspection standards. C-section steel manufacturers should keep close contact with truck manufacturers and communicate more. In this way， it is more conducive for C-section steel manufacturers to produce C-section steel products suitable for truck industry.
Check whether the manufacturers qualification， business license， organization code certificate，Products Show tax registration certificate，Genetic diseaseASTM A106B seamless pipeAll employees production and operation license and other qualification materials are complete. Look at the case， investigate the suppliers performance and the projects served in the past. Whether there is a self built logistics fleet or not， choosing a service provider with a self built logistics fleet can reduce the transportation cost， and more importantly， ensure the timeliness of delivery. After sales service， whether there is a sound and reliable after-sales service guarantee system， and timely solve quality problems in arrival acceptance and subsequent use. Check whether the quality assurance materials such as product quality certificate material specification and warranty are complete. Check the appearance of the welded pipe， the surface is smooth and flat， the weld is dense，Products Show without burr， oil stain， corrosion， extrusion deformation and flat cross section. Use a micrometer to check whether the outer diameter and wall thickness of the welded pipe meet the requirements， and the standard wall thickness deviation shall not exceed % - %. NDT shall be carried out for welded pipe with flaw detector. Conduct bending tensile strength test according to the requirements， and there is no crack at the bend.
GAltagrasiaThe pollution of the joint causes the welding cracking. The composite pipe welding is an accurate work. If it is not done well， it will not only waste resources， but also lead to work efficiency， rework and restart， and waste financial resources.
Li Welded steel mesh is aesthetically pleasing.
Carbon: the higher the carbon content，Products Show the higher the hardness of steel， but the worse its plasticity and toughness
It bears high internal working pressure.
oX-ray or ultrasonic testing shall be carried out for repair welding of alloy pipe，Genetic diseaseASTM A106B seamless pipeAll employees yibai%sx ray or ultrasonic testing shall be carried out. For the spiral welding of alloy pipes for the transportation of water， gas， heating steam and other general liquids， X-ray or ultrasonic testing sampling inspection (%) shall be carried out.
MSteel pipes can be classified by their models:
XDirect labor East West derusting: if the galvanized pipe surface is rusty， the manufacturer will choose East West derusting and polish it with a steel wire brush
oNThe surface of cold galvanized layer is smooth， dense and uniform. It has good mechanical properties and corrosion resistance. The consumption of hot-dip galvanized coating is between % - %. The galvanizing process is complex， but the thickness of single-sided coating， surface coating and double-sided coating is different，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd so the thin-walled pipe shall be galvanized. The zinc coating has strong protection and corrosion resistance.
Chromium can improve the hardenability and wear resistance of steel， and improve the corrosion resistance and oxidation resistance of steel
The use of welded steel mesh in China is still in its infancy. At present， the use of welded steel mesh in China accounts for less than one of the total amount of steel reinforcement. In the early s， steel welded mesh was listed as a key implementation project by the science and Technology Commission and the Ministry of construction， and specifications and procedures were formulated.
Where can I find it?k The end span plate is connected with the load-bearing wall. The length of the surface mesh extending into the grid support shall not be less than mm， and a transverse reinforcement shall be provided at the end of the mesh or the extended reinforcement shall be bent.
DI-beam is divided into ordinary I-beam and light I-beam. The specification of hot rolled ordinary I-beam is -#. The specification of hot-rolled flexible I-beam supplied through agreement between the supplier and the buyer is -#. I-beam is mainly used in building structure， vehicle manufacturing， other industrial structures and fixed panels and cabinets. I-beam is often used together with I-beam.
There shall be no bending at the welded junction， and there shall be no staggered joint during assembly. Electric welding positioning is generally spot welding. After inspection and straightening， the free conversion method shall be used for welding as far as possible.
uSan Pablo The pollution of the joint causes the welding cracking. The composite pipe welding is an accurate work. If it is not done well， it will not only waste resources， but also lead to work efficiency， rework and restart and waste financial resources.
eZExternal steel bonding reinforcement method is a more traditional reinforcement method. The utility model uses an adhesive to paste the steel plate or reinforcement mesh on the cracked part of the wall to achieve the purpose of reinforcement. The commonly used adhesive is usually epoxy resin. This method is simple and fast in construction and has little impact on production and life. Basically， the bearing capacity of the wall can be greatly improved without changing the shape and internal use space of the components. It is mainly applicable to the reinforcement of walls that do not allow to increase the section size of original components， but can greatly increase the section bearing capacity.
Because zinc has excellent ductility and its alloy layer is firmly attached to the steel base， hot-plated parts can be formed by cold stamping， rolling， wire drawing bending and so on without damaging the coating;