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Q235 steel bar, Smooth round bar, HPB235-HRB335(Q335)
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Q235 steel bar, Smooth round bar, HPB235-HRB335(Q335)
Q235 steel bar, Smooth round bar, HPB235-HRB335(Q335)
Classification:Water and electricity construction industry
Release date:2015-10-12
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Content:
 
Introduction


Q235 reinforcing steel bar, smooth round reinforcing steel bar, HPB235-HRB335(Q335) Basic Knowledge


Q235(HPB235)is one steel of carbon structure, this is the texture of the steel. And the Q express Yield strength, 235 is the Yield strength MPa. And Q235 can also be used to making the reinforcing mesh which belongs to Hot rolled level 1 reinforcing steel bar. It has glossy circular section without thread. the packing form is coil and bar, diameter 6--10mm, length of 6m ~ 12m.

HPB235:

H express hot-roll;

P express smooth round;

B express bar;

Q express Yield strength;

R express ribbed reinforcing steel bar.

HPB235 is smooth round bar, but Q235 is coil form. HRB235 is hot roll ribbed reinforcing steel bar(Level 2). HRB400 is hot roll ribbed reinforcing steel bar(Level 3).  

The tensile strength of Q235 reinforcing steel bar is greater than HPB235.

Reinforcing Rib Application 1Bridge Reinforcing Rib Application 2


The new standard GB1499.1 "Reinforced concrete Steel - Part 1: Hot rolled round bars" instead of the previous GB / T 701-1997 "low-carbon steel hot rods" in the rods section.


1. in the old GBJ10-89 "Design of Concrete Structures" to the level of reinforced steel is divided into Class I, II grade steel, III and IV grade steel grade steel.


2. in the current edition of GB50010-2002 "concrete structure design specifications" in the ordinary hot-rolled steel are mainly the following four types, HPB235 level, HRB335 grade, HRB400 grade, RRB400 level.


3. prior to the introduction of the new version of GB1499 specification, it can be considered HPB235 level, HRB335 grade, HRB400 grade, RRB400 grade steel respectively Class I, II grade steel, steel grade III and IV grade steel. After the introduction of the new GB1499 specification, HPB235 grade steel should be called I grade steel, HPB300 grade steel should be called II grade steel, HRB335 grade steel should be renamed III grade steel, HRB400 grade and RRB400 grade steel should be renamed IV grade steel.


Smooth round of Q235 steel reinforced HPB235 - HRB335 (Q335) can be used in wire drawing, stirrups, steel mesh fence, barbed wire, wire production. Steel mesh application is very extensive, its name because of geographical and used to call it a lot, there are mainly two kinds of cold rolled steel, hot rolled steel fabric. One of the ribbed and not ribbed. Ribbed steel fabric, rib steel, light steel fabric, shape steel mesh, D6 steel mesh, D8, D10... A5 and A6... C6, C10... B6, B12... The different called E8 steel fabric.

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