Hot rolled steel square bar

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Name:steel billets
LENGTH:6 meter to 12 meter (+ 50mm)
Size:100*100, 120*120, 150*150, 200*200
Grade:3SP,5SP,Q235,20MnSi.
Shape:Square, Round
Technique:Hot-Rolled
Standard:ASTM/GB
BENDINGNo more than 5mm in 1 meter
No more than 30mm in 6 meter
No more than 60mm in 12 meter
ANGULAR TWISTNo more than 1 degree per meter and not more than 6 degree over 12 meter length.
Chemical compositionC, Si, Mn, P, S, N, etc

Chemical Properties

Size60*60/90*90/100*100/120*120/150*150
Length6000mm-12000mm
StandardGB
ApplicatonTo produce bars or other applications
GradeQ195/Q235/Q275/3SP/5SP/20MnSi
Packing termsTT/LC
PackageMill's standard packing or as client's requirment
Delivery timeWithin 10-30 days after receiving the deposit or LC

Chemical Comosition

StandardC(%)Mn(%)S(%)P(%)Si(%)
Q195≤0.12≤0.50≤0.040≤0.035≤0.30
Q235≤0.20≤1.40≤0.045 ≤0.045≤0.35
Q275≤0.22≤1.50≤0.045≤0.045≤0.35
20MnSi0.17-0.251.2-1.6≤ 0.050≤ 0.0500.40-0.80
3SP0.14-0.220.40-0.85≤ 0.050≤ 0.0400.05-0.15
5SP0.28-0.370.50-1.00≤ 0.050≤ 0.0400.15-0.30


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Q:Why is a point of penetration of 2 square steel welding
Electrode selection 2, 0J422, welding current about 80, if conditions permit, you can use carbon dioxide welding, welding process is very good grasp.
Q:Glass partition, square box outsourcing 1mm thick stainless steel, glass middle is how to set the quota
Can consider to increase the insurance factor, the edge of the glass with epoxy resin and solid wall such as granite wall adhesion (which went to the production of glass curtain wall) will not allow the use of styrofoam! Because of adhesive power, shear resistance and so on are poor.
Q:How to hollow square steel welding
Because the hollow steel thin wall, the use of electric welding should be used for small diameter with 2.5 electrodes, current should not be too large, can be around 100.
Q:How the steel columns and I-beam steel structure connection?
The square column is usually connected with a connecting plate, and the upper beam is arranged on the connecting plate and is fixed by an electric welding or a bolt.
Q:How to ensure the steel paint off paint
Authentic traditional painting techniques include the following three steps:The 1. is to use a paintbrush dipped in paint: paint bucket, spread on the coated surface.2., open oil: that is, the shop on the surface of the paint immediately pull open, to promote the film extended evenly.3. paint: paint brushes gently spread evenly with solid particles and straighten out the paint, the paint off and excess paint.You paint square, from top to bottom, by plane, according to my above paint method can ensure the uniform film.In addition, you must use special metal paint finishing of polyester type steel, to ensure no paint brush.
Q:The moment 2mm thick galvanized square steel tube using what welding methods
Galvanized square tube adopts gas shielded welding, conventional J50 gas shielded welding wireArgon arc welding galvanized square pipe, zinc burning more severe, not recommended
Q:What is the use of square steel keel or welding steel canopy
Canvas awning: crank arm type retractable awning is in a separate structure, relatively safe, without the square tube, no paint spray, arm firmly and focus on both sides of the steel plate bracket, if the canopy length of more than 5m, the increase of direct arm assembly and focus on the middle support, on both sides of the iron with expansion screws are mounted directly on the solid wall, or welded firmly in indirect metal frame, the installation conditions need to pick out the roof, or rain gear plate, telescopic arm type awning is a retractable awning can be arbitrarily different stretching length, wind speed Aluminum Alloy bracket can withstand 50KM/ph. Maximum size of up to 18 meters wide, stretching length of up to 1.5 - 3.5 meters, the adjustment is divided into manual, electric, remote control and wind control, light control, rain control and many other ways for you to choose. Features: the main feature of this tent is cheap and practical. The sunshade cloth: generally equipped with ordinary canopy canvas, suitable for ordinary shops and small ordinary city.
Q:The steel structure material can do
The square can be built steel shed, small steel shed are built with square, purlin is divided into 98% major plant two 4*6 and 4*8 5*10 are not a pillar or beam with the tube, because not standard
Q:The anti-theft lock in the steel compression spring is what?
The use of stainless steel spring wire suspension spring wire is advanced, high strength, long fatigue life, the effect is good damping characteristics, spring steel wire, the number and distribution of inclusions, so the chemical, high surface quality, decarbonization, microstructure and mechanical performance requirements.
Q:As for steel structure steel, how appropriate
The size of the material is strongly related to the load on your floor, and the roof material and column size are also related to your span and the local Blizzard loads. You can choose the size of the material according to the local conditions.

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