316 stainless steel tubing is a widely used premium grade within the austenitic stainless steel family. Due to the addition of molybdenum (Mo), it offers significant improvements in corrosion resistance, high-temperature stability, and mechanical properties compared to the base 304 stainless steel tubing.

Q345B carbon steel pipe is one of the core pipe materials within the Chinese national standard system (GB/T 1591-2018 ‘Low-Alloy High-Strength Structural Steel’), falling under the category of low-alloy high-strength carbon steel pipes. Owing to its excellent comprehensive mechanical properties and high cost-effectiveness, it finds extensive application across multiple sectors including construction, machinery, chemical engineering, and municipal works.

Q355B carbon steel pipe is a low-alloy, high-strength seamless carbon steel pipe defined within Chinese national standards (GB/T 8163, GB/T 9948, etc.). Its core characteristics are ‘high strength and good low-temperature toughness’, making it one of the mainstream materials replacing traditional Q235 steel pipes in engineering applications.

Q355 carbon steel coils are medium-strength low-alloy carbon steel coils as defined in the Chinese National Standard (GB/T 1591-2018 Low-Alloy High-Strength Structural Steel). Their core characteristics are moderate strength, balanced comprehensive mechanical properties, and high cost-effectiveness.

Q355 carbon steel coils are defined as low-alloy high-strength structural steel coils within the Chinese National Standard (GB/T 1591-2018 “Low-Alloy High-Strength Structural Steel”). Compared to ordinary carbon steels (such as Q235), it enhances strength and toughness through the addition of trace alloying elements (such as Mn, V, Ti, etc.), while maintaining good workability and weldability. It is one of the core steels meeting the ‘high strength, lightweight’ requirements in industrial applications, widely used in medium-to-high stress scenarios such as construction machinery, building structures, and pressure vessels.

Q195 carbon steel coils are defined as low-carbon structural steel coils within the Chinese National Standard (GB/T 700). Characterised by moderate yield strength, excellent workability and relatively low cost, they constitute one of the most widely used foundational steels across industrial sectors. They are particularly suitable for applications requiring good formability rather than high strength.