The tensile strength of ST42 Carbon Steel Pipe shall not be less than 42kgf/mm2, which is 420MPa.ST42 Carbon Steel Pipe is a German standard seamless steel pipe, which is widely used. German standard seamless steel pipes for general purposes are rolled from ordinary carbon structural steel, low alloy structural steel or alloy structural steel, with the largest output, and are mainly used as pipes or structural parts for fluid transportation .

A570 Gr. D Carbon Steel Pipe can exist in various product forms, including but not limited to round pipes, square pipes, rectangular pipes, etc. In addition, there are various profiles available for selection, such as A570 Gr. D round steel, square steel, flat steel, hexagonal steel, I-beam, channel steel, angle steel, etc. These products can be widely used in fields such as construction, machinery, automobiles, and ships.

S355JR is a low-alloy high-strength structural steel that complies with the European standard EN10025. Its main material components include elements such as carbon (C), silicon (Si), manganese (Mn), phosphorus (P), and sulfur (S). In terms of specific content, the carbon content usually does not exceed 0.24%, the silicon content does not exceed 0.55%, the manganese content does not exceed 1.60%, and the phosphorus and sulfur content is also controlled at a low level (such as phosphorus ≤ 0.035%, sulfur ≤ 0.035% or lower, depending on data from different sources).

20Mn6 is a carbon-manganese steel micro alloyed with vanadium, generally supplied in the black hot rolled condition with
a typical tensile strength range of 600 - 790 Mpa and a high typical yield strength range of 440 - 570 Mpa.
Characterized by excellent machinability due to silicon - calcium treatment and precise control of the sulphur content,
excellent weldability with high yield and tensile strengths due to the micro - alloying effect of the vanadium

A179 seamless cold drawn low carbon steel pipe is equivalent to China's No. 10 high-quality low-carbon steel. A179 is suitable for cold-drawn high-quality low-carbon seamless steel pipes for heat exchangers and condensers.

Carbon steel pipes are made by piercing steel ingots or solid round steel into capillary tubes, which are then hot-rolled, cold-rolled, or cold-rolled
Carbon steel pipes are divided into two categories: hot-rolled and cold-rolled (drawn) steel pipes.

Q195, is oneCarbon structural steel。Yield strength195MPA。 compareQ235Low intensity. Used in construction, structures, motorcycle frames, etc. United StatesASTMThe grade is Gr.B(σs185). σs185 means that the yield strength is 185MPa.

A53 American standard seamless steel pipe is made of high-quality steel billets through hot rolling, cold drawing and other processes. The chemical composition and mechanical properties of this steel pipe comply with the requirements of American standard ASTM A53/A53M.

S235JR is a European standard non alloy structural steel, which is a carbon structural steel with low carbon content, commonly used for welding, bolt connection, and riveting structures. Mainly used in construction, bridges, ships, vehicle structural components, manufacturing various tools, cutting tools, molds, and measuring tools.