Shandong Quantong Metal Products Co., Ltd. is a comprehensive company for steel production and trading. Its business includes production, processing, distribution, logistics and import& export of steel. Our main products are pre-painted, hot rolled steelcoils, cold rolled steel coils, galvanized steel coils, prepainted steel coil stainless steel sheet/coil,stainless steelpipe,stainless steel strip etc.
We has passed IS09001 quality management system certification us produce various types of steel with CE standards.
We cooperated with well-know paint manufactures , such as NipponAnd Zhengliang, to establihcolor services systems such as RAL,Pantone,National Standard and China Building Color Card , to provide custmoers with color solutions in the early stage of the project with high efficiency and precision,and is committed to building environmental protection, energy saving and colorful.

Carbon steel is an iron-carbon alloy with a carbon content between 0.0218% and 2.11%. It has become one of the most widely used metal materials in modern industry due to its low production cost and strong performance adaptability. The following is a detailed introduction from the aspects of composition, classification, performance characteristics, and application fields:

1. Three product series of stainless steel
Stainless steel can be roughly divided into three categories: 200 series, 300 series and 400 series. Among them, 300 series is the most commonly used. 200 series and 400 series are substitutes for 300 series to a certain extent. Strictly speaking, 400 series is not called stainless steel, but stainless iron because it does not contain nickel, so it can be attracted by magnets. 200 series and 300 series contain nickel, so they are not magnetic and cannot be attracted by magnets.