Mechanical properties of material S690QL welding

What is the difference between S690QL welding, carbon steel pipe and seamless steel pipe? Carbon steel pipe, the performance of this kind of steel pipe is controlled by the amount of carbon content. Different carbon content has different properties and uses. Carbon steel pipe can be seamless or seam welded. Seamless steel pipe is a large category of steel pipe, which can include carbon seamless steel pipe, low alloy seamless steel pipe, high pressure boiler pipe, oil cracking pipe and so on.

Analyze the advantages and disadvantages of the products against the competitive products. Understand the industry situation and future trend. Understand the S690QL welding product brand positioning appeal point, focus on the crowd and development direction. Understand the layout of each market area, and form a big strategic layout view. Understand the basic operation and assessment standards of work responsibilities. Understand the situation of the cooperative customers.

The sulfur element (S element) comes from the ore and fuel coke of steelmaking. It is a harmful element in S690QL welding etc. steel. Sulfur exists in steel in the form of iron sulfide (FeS). FeS and Fe form a low melting point (985℃) compound. The hot working temperature of steel is generally above 1150 - 1200℃, so when the steel is hot working, the premature melting of FeS compound causes the workpiece to crack, which is called "hot brittleness". It reduces ductility and toughness of steel and causes cracks during forging and rolling. Sulfur is also detrimental to welding performance and reduces corrosion resistance.

What is the the price of S690QL welding inventory? EXW price: 532 USD per ton11*2080*13550, 11.5*2770*8470, 12*1650*7800, 10*2240*8875, 14*3545*5070,, 10*2050*7900, 10*1800*7800, 14.5*2250*10280, 12*3570*13100, 10*3690*10170, 15*2550*6650, 12.5*2415*8550, 15*3200*15000, 12.5*2030*13450, 13*3340*10900, 12*1560*8725, 13*3200*15000, 14*3700*11040, 9*3500*6750, 12*2720*8725, 15*1620*4000, 15*3920*8620, 13*3055*11550, 13*2230*15150."