Spray is OK. This method can not only completely remove rust， oxide and dirt， but also the welded pipe will be affected by abrasive impact and friction， resulting in the average roughness of the welded pipe.
7How are seamless tubes made?
sSan Jose LajasWhether I-section steel is ordinary or light， because the section size is relatively high and narrow， the moment of inertia of the two main axes of the section is quite different，Products Show so it can only be directly used for members bent in the plane of their web or form lattice stressed members. It is not suitable for axial compression members or members with bending perpendicular to the web plane，placeCustom welded pipeInstallation and removal guide which makes it very limited in the scope of application. I-beam is widely used in buildings or other metal structures.
NWesteros Pure zinc layer is a plastic zinc layer in hot-dip galvanizing. Its properties are basically close to pure zinc and have ductility， so it is flexible.
WjStretch punching by steel plate equipment; The main purpose is to be used in the structure of scaffold.
Tungsten; can improve the red hardness and thermal strength of steel， and can improve the wear resistance of steel
The reinforcement on both sides of the inverted beam extends into the beam respectively， and the anchorage length of the reinforcement is the same as that of the reinforcement， without hook.
a→ I-beam can be processed into T-beam，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd and honeycomb beam can be combined to form various section forms， which greatly meets the needs of engineering design and manufacturing.
D If the surface of the welded pipe is rusty， we can polish the appearance of the welded pipe with a wire brush to prevent rust.
Areform 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
fGGenerally what are the customers requirements and standards during acceptance? When the galvanized pipe is accepted， or whether there are problems such as missing plating or bubbles on the outer wall of the whole square pipe. Only by solving these problems in time can it be judged as qualified and better used.
Galvanized pipe is a layer of galvanized ordinary steel. This is a layer and is a great anti-corrosion protection.
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，Products Show 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.
qualityh If the surface of the welded pipe is rusty we can polish the appearance of the welded pipe with a wire brush to prevent rust.
UThe core of C-section steel is the structural system of braced frame. More than half of such senior managers in China are the former. Unfavorable to earthquake resistance. Hydraulic power， and the power is large，placeCustom welded pipeInstallation and removal guide generally about KW， which is similar to the plate shearing and bending machine. The general control process is complex， and PLC control is mostly used.
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.
qSan Jose LajasGalvanized; hot-rolling;
yFThe production methods of seamless pipe are roughly divided into cross rolling method and extrusion method. The cross rolling method is to drill the tube with a cross roll，Products Show and then extend it to the rolling mill. This method has fast production speed， but has high requirements for the workability of the blank. It is mainly suitable for the production of carbon steel and low alloy steel pipes. The extrusion law is to pierce the blank or ingot with a punch， and then squeeze it with a steel pipe with an extruder. The efficiency of this method is lower than that of cross rolling method. It is suitable for producing high-strength alloy steel pipe. The billet or ingot must be heated before cross rolling method and extrusion method. The produced steel pipe is called thermal correlation. Steel pipes produced by hot working can sometimes be cold worked as needed. There are two methods of cold working. One is cold drawing. In other words， pull the pipe to the pipe and tilt it to make the steel pipe gradually thinner and longer. Another method is cold rolling. The method of applying the hot smoke invented by brother to cold processing. The cold working of seamless pipe can improve the dimensional accuracy and finishing of steel pipe