Hod Dip Full Hard Galvanized Gi Steel Coil

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Loading Port:
Tianjin
Payment Terms:
TT OR LC
Min Order Qty:
50 m.t.
Supply Capability:
3000 m.t./month

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Item specifice:

Standard: AISI,JIS,GB,ASTM Technique: Hot Rolled,Saw Shape: U Channel,Round
Surface Treatment: Galvanized,Coated,Oiled,Chromed Passivation Steel Grade: Q195,Q215,Q235,Q215B,Q235B Certification: ISO,SGS,BV,IBR,RoHS
Thickness: 0.12 Length: 1200 Net Weight: 2MT

Product Description:

 

Product  Brief  Introduction

 

Hot Dip Full Hard Galvanized Gi Steel Coil


--- Hot Dip Full Hard Galvanized Gi Steel Coil applies to construction field, ships building industry, petroleum,

chemical industries, war and electricity industries, food processing and medical industry,

boiler heat exchanger,machinery and hardware fields. 

Product Features

 

. Traditional aesthetics outlook 
. Suitable for new house or renovation.
. Long life service
. Tedun also provide relative ridge cap, fasteners and other accessories

Product Specification 

Standard:ASTM, GB,JIS,JIS G3302 ASTM 755 EN10169

Grade: DX51D CGCC CS

Thickness: 0.12mm~4.0mm,

Width: 1250,600-1250mm

weight:3-12 MT

Chemical composition:

C

Si

Mn

Cr

Ni

P

S

0.150

0.476

11.231

12.50

0.900

0.039

0.010

 

 

 

FAQ

 

1.    How long will we receive the goods ?

45days after receiving workable L/C

 

1.    how do you control the quality ?

we have our own quality control department ,we will arrange QC person  to see the production line ,when goods finish ,before shipment ,our QC person will check the quality as per our test report request ,if the goods is ok ,then we issue the test report ,and we allow the goods shipping ,otherwise will not allow ship the goods.

Hod Dip Full Hard Galvanized Gi Steel  Coil

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Q:What are the differences between strip steel and round steel? Where are they mainly used?
Round steel is a solid strip of steel whose cross section is round. The specifications are expressed in millimeters of diameter, such as "50", which means a round bar of 50 millimeters in diameter. Round bar is divided into three parts: hot rolling, forging and cold drawing. Standard Specification for hot rolled round steel is 5.5-250 mm. Of which: 5.5-25 mm small round bars are mostly supplied by straight strips. They are used as reinforcing bars, bolts and various mechanical parts. Round bars larger than 25 millimeters are used mainly for making mechanical parts or for seamless steel tubes.Mainly used in the manufacture of various tools, cutting tools, moulds and tools (see tool steel), but also a large number of used in the manufacture of various mechanical parts.
Q:What gas does the shear of the strip weld require for the welder?
Welding equipment includes welding machine and welding auxiliary mechanical equipment. According to the way of welding, it can be divided into two kinds of flash welding and welding.
Q:What does "strip 50" mean?
Medium carbon high strength carbon steel, after quenching with high strength and hardness of the steel cutting medium, cold plastic deformation, poor welding, heat treatment when no temper brittleness, but the hardenability is low, the critical diameter of water is 13*30mm, and when the water quenching cracking tendency. This steel is usually used after normalizing or quenching, tempering, or high frequency surface hardening.
Q:What's the difference between strip 235 and 235b?
235B only requires a temperature environment of 20 degrees C; this is because of their chemical composition of sulfur, S, phosphorus, P content indicators caused by different.The 235 is 235A, 235 in the material according to the sulfur phosphorus content from high to low is divided into ABCD four grades, grade a sulfur phosphorus was the highest relative performance (welding, plasticity) is the worst, D performance is the highest, the lowest content of parathion.
Q:What's the cutting edge of cold rolling strip?
Do you mean the cutting edge is the indication of the steel roll out of the factory? When the steel factory leaves the factory, the steel coil will have the burr and the cutting edge two kinds, the rough edge is the steel strip two, the edge is not neat. The trimming is the two sides of the steel band, and the width of the strip is certain when it is trimmed.
Q:The degreasing time is too long, will the strip surface be oxidized?
Galvanized steel plate in spray, generally do phosphating treatment, the parameters of free acid phosphating solution should be kept low, and high temperature, acid, zinc ions reduced excessive reaction, resulting in coarse crystallization. Reference: Fa:0.8-1.5 Ta:17-28 acid ratio of about 25, the temperature can be 35-45 degrees.
Q:Can cold rolled strip be plated with white zinc?
Rust removal will affect the quality of the plating. The rusted part must be polished with sandpaper to allow it to be the same as the surface roughness without rust around it.
Q:Why does the strip bend when it is rolled?
In the rolling process of strip tension is too large or too small will bring many adverse effects on the operation, including in the choice of a plan, must be properly chosen at each strip tension, if the improper selection of strip tension, will affect the quality of strip steel and the actual operation, when the strip coiler tension before and after the selection is too large that will cause the broken belt or rolled steel coil is heart-shaped, tension is too small will cause damage to roll off with Le roll or strip.
Q:Hot rolled strip and hot rolled strip are also sealing plates? What's their function?
First of all, there are some hot rolled strip, the main role is to prevent roll cooling water flow to the workpiece, affecting the crown of the strip and shape control.
Q:Can the tension leveller eliminate the wave shape of strip steel completely?
Reflecting the shape of the board, the wave height is reduced or the wavelength is lengthened. That is, the tension straightener can only reduce the wave and improve the shape of the plate, but can not fundamentally eliminate the wave, and get an ideal smooth strip steel. There is an old saying called "correction must be positive". That is to completely eliminate the wave must be of short fiber than long fiber tension and bending is greater, elastic and plastic deformation of the original long fiber length is greater than a certain amount, resulting in the removal of external force, elastic recovery, length of fiber length, so as to obtain the shape completely flat the. However, in the current conditions of the straightening machine equipment, do not have such a function.

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