Coil refers to finished steel products made from slabs. Slabs are considered semi-finished steel products made from ingots. Coils can be produced from slabs in different ways – hot-rolled, cold-rolled or electrolytic tinplate (EPT). Once all major production processes are completed, the resulting rolled material can now be used in various industries for assembly or further manufacturing. Knowing this, steel coil uses can vary by industry, but some of its most popular and well-known applications include pipe fabrication, structural steel members, electronic components, consumer goods, automotive parts, and many more.

Galvanized roofs are designed to last longer and can withstand harsh weather conditions such as rain, snow and hail. However, it is also extremely important to perform maintenance to prevent and correct any problems that arise. This article will summarize five tips to extend the life of your galvanized roof.

There are many kinds of alloying elements in q345B alloy round steel. In general, these elements have great influence on Q345B alloy round steel, such as increasing its hardenability.Influence tempering process;Affects the comprehensive mechanical properties.The following small make up for you to introduce the alloy elements in the q345B alloy round steel.

Definition of stainless steel: Iron-based alloys with a chromium content of more than 12% are called stainless steel.
The most basic characteristic of stainless steel is its rust resistance under atmospheric conditions and corrosion resistance in various liquid media. (not easy to rust)

The meaning of stainless steel: stainless steel is a general term for stainless steel and acid-resistant steel. Stainless steel refers to steel resistant to weak corrosive media such as atmosphere, steam and water, while acid-resistant steel refers to steel resistant to chemical corrosion media such as acid, alkali, and salt.

There is a big difference in the degree of alloying between stainless steel and acid-resistant steel. Although stainless steel is stainless, it is not necessarily acid-resistant; and acid-resistant steel is generally stainless.

A high-alloy steel that can resist corrosion in the air or in chemically corrosive media. Stainless steel has a beautiful surface and good corrosion resistance. It does not need surface treatment such as color plating to exert the inherent surface properties of stainless steel. It is used in many applications. A type of steel, usually called stainless steel.

From the perspective of metallography, because stainless steel contains chromium, a very thin chromium film is formed on the surface. This film isolates it from the oxygen intruded into the steel and acts as a corrosion resistance. In order to maintain the inherent corrosion resistance of stainless steel, the steel must contain more than 12% chromium.

ASTM A511 Standard Stainless Steel Pipe for Mechanical Engineering Exported by the Company to the United States
Purpose: lathe processing
Material: TP316L
Standard: ASTM A511
Process: cold drawing
Specification: 179mm × 19mm × 6000mm
Length tolerance: - 0/+3mm
Straightness: 1.5mm/1000mm
Outer diameter tolerance: - 0/+1.5mm, inner diameter tolerance: -1.5mm/+0mm. The steel pipe shall meet the outer diameter requirements, and the thickness shall be produced according to the positive tolerance.
Inspection standard: according to ASTM A511 standard+100% PMI inspection+chemical composition inspection; The wall thickness of 6 points at each steel pipe end shall be measured uniformly (for the same steel pipe, serious unilateral and uneven wall thickness problems shall be avoided). The middle pipe of the steel pipe shall be inspected by ultrasonic thickness gauge to measure the wall thickness of 6 points in both vertical and horizontal directions.
Delivery status: pickling and annealing, the internal and external surfaces of steel pipes are clean and free of obvious water marks, the internal and external surfaces of pipes are dry, and the pipe orifices are flush and free of burrs.
It is produced according to the American ASTM A511 standard for mechanical engineering pipes and is mainly used in the lathe machining and shaft making industry. Compared with the ordinary ASTM A312 fluid transmission pipeline, it has more strict requirements on the outer diameter, inner diameter, thickness and straightness tolerance of steel pipes to ensure that the steel pipes can be used for lathe processing and the high-precision requirements of the final products.