Gnee Steel (Tianjin) Co., Ltd. is one of the most professional q345 q235 c section steel manufacturers and suppliers in China, also supports customized service. If you're going to buy q345 q235 c section steel made in China, welcome to get free sample from our factory. Quality products and low price are available.
Products Description
The specification is different.
Q235: mold steel quenching specifications, quenching temperature of 950 ℃, salt bath furnace heating, 10% NaCl brine cooling quenching.Cold pressing blank softening treatment specification: temperature 740 ~ 760 ℃, holding time 4 ~ 6h, with 50 ~ 100 ℃ / h cold rate, with the furnace down to a temperature of ≤ 600 ℃, out of the furnace air cooling, hardness before treatment ≤ 197 HBS, hardness after treatment ≤ 156 HBS.
Q345: Normalizing specification: Normalizing temperature 850-870℃, hardness 170-217HBS after normalizing.
Q345 steel quenched without tempering before hardness greater than HRC55 (up to HRC62) is qualified. The actual application of the highest hardness of HRC55 (high frequency quenching HRC58). So Q345 do not use the heat treatment process of carburizing and quenching.
Q235 and Q345 belong to the same class named, the appearance is generally not visible.
Product Details
| Product Name | Q345 Q235 c section steel |
| Length | As your required |
| Standard | ASTM/ GB/ JIS/ EN ect. |
| Delivery Time | According to your quantity |
| Payment Terms | FOB/ CIF/ EXW/ DDP |
| Origin | China |
| Sample | Yes |
| Tolerance | ±0.3 |
| Packing | Packed with steel belts tightly, in bundle |
GNEE Group Receives Visiting Customers
Our factory has complete production facilities, and provides laser cutting , bending, welding, painting, assembly and other processing services.
We have own large-scale indoor warehouse with perennial spot stocks totally above 5000 tons mainly include 2000 tons galvanized
steel series and 2500 tons carbon steel series
All the products have to pass the inspections such as tension test, hardness test, spectrophotometer test, salt spray test and PH
test before leaving the factory .
Our Service
1.Quality Assurance ''Knowing our supplier''
2.On time delivery ''No waiting around''
3.One stop shopping ''Everything you need in one place''
4.Cost saving options ''Getting you need in one place ''
5.Small quantity acceptable ''Every ton is valuable to us''