Installing the pipe structure means the complexity of some elements.
7 The vertical of the processed reinforcement bar shall be divided into small sections as required.
eMetal oxide arresterX-ray or ultrasonic testing shall be carried out for repair welding of alloy pipe， dead end welding of strip steel and circumferential seam. For the spiral welding of steel for the transportation of flammable general liquids， yibai%sx ray or ultrasonic testing shall be carried out. For the spiral welding of alloy pipes for the transportation of water， wastewater， gas， heating steam and other general liquids，Products Show X-ray or ultrasonic testing sampling inspection (%) shall be carried out.
Galvanized pipe is a layer of galvanized ordinary steel. This is a layer and is a great anti-corrosion protection.
VZutphen There are many processes in the process of welded pipe processing，هولكينأنا الصلب الشعاع الأسعارحدود المنتج and every detail needs our attention. Welded pipes need to be treated by various processes before application. Heat treatment of welded steel pipe is an important link in the process of welding steel pipe. Hot working is a metal hot working process in which metal materials are heated， insulated and cooled in a certain medium， and the metal properties are controlled by changing the metallographic structure on the surface or inside of the material.
NbGalvanized 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，Products Show it is not difficult to understand why the galvanized pipe is so favored by various construction units.
China is a big steel country.
Third， between the flange on the inner side of the sidewalk beam and the old bridge deck， the widening part of the bridge deck is poured with concrete， and the concrete of the bridge deck pavement is poured at the same time to form a carriageway. The reinforcement mesh is set on the bridge deck pavement and the widening part of the bridge deck to strengthen the overall performance. Fourth， the bridge deck expansion joint is set at the center of the cantilever beam top， and the carriageway pavement is extended and erected on the cantilever beam.
bWhen selecting I-beam in structural design， reasonable I-beam shall be selected according to its mechanical properties， chemical properties， 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.
BEncyclopedic knowledgeLongitudinal welded pipe has the advantages of simple production process，Products Show 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， and welded pipe with different pipe diameter with blank of the same width. However，هولكينأنا الصلب الشعاع الأسعارحدود المنتج compared with the straight seam pipe with the same length， the weld length increases by ~ ， and the production speed is low. Welded pipes with large or thick diameter are generally made of steel blank directly， 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.
gO According to the pipe wall thickness， pipes made of relatively thin materials such as steel strip can be welded with high frequency， and some thin-walled pipes can be welded with shielding gas; Pipes with wall thickness more than mm can be welded by hand.
Steel pipe with complex section -- unequal hexagonal steel pipe，Reinforcement, galvanized pipe, seamless pipe, welded pipe, alloy pipe, I-beam-Shandong Kaiwen metal material Co., Ltd five petal quincunx steel pipe， double convex steel pipe， double concave steel pipe， melon seed steel pipe， conical steel pipe， corrugated steel pipe， watch case steel pipe and others.
When the mesh reinforcement on both sides of the beam is different， the reinforcement on both sides extends into the beam， and the reinforcement anchorage length is required.
How much does it cost?r The surface of hot-dip galvanized parts is bright and beautiful.
MAs shown in the name， generally :， which makes the outer flange thin and the inner flange thick. Therefore， the section characteristics of I-beam in the two main planes are very different， and it is difficult to give full play to the strength characteristics in application. Although the thickened I-beam has also appeared in the I-beam market， the structure of the I-beam has determined its torsional performance.
The vertical of the processed reinforcement bar shall be divided into small sections as required.
tMetal oxide arresterFrom the situation of chiseling on site， the reinforcement mesh laid by the construction party is cm below the surface layer， which greatly exceeds the specification， and then the crack resistance of the reinforcement mesh can be reduced. Because of the increasing temperature， the effect of thermal expansion and cold shrinkage and the characteristics of concrete the cracking of surface layer is significant.
iZThe smooth of steel pipe is mainly through tension reducing， the whole welded pipe is heated to more than ℃ by the welded pipe tension reduction process which is a continuous rolling process of hollow base metal without center and tip. Under the condition of ensuring the capillary welding quality， Domestic hot welded pipe has gradually formed a situation to replace smooth pipe.
. the straight length of the hook of the surface mesh reinforcement at the grid support shall not be less than mm， and the bending diameter shall not be less than D (D is the reinforcement diameter).