Petroleum tubes are furnace tubes, heat exchangers and seamless steel tubes suitable for petroleum refineries.

Precision tube is a high-precision, high-brightness seamless steel tube produced by cold drawing or cold rolling. Its inner and outer diameters can be accurate to within 0.2mm. While ensuring bending and torsional strength, it is light in weight, so it is widely used in the manufacture of precision mechanical parts and engineering structures. It is also commonly used to produce various conventional weapons, barrels, shells, bearings, etc.

The so-called carbon steel pipe actually refers to the fact that the mechanical properties depend on the carbon content in the steel pipe. Generally, steel pipes that do not add a large amount of alloy elements are also called ordinary carbon steel pipes or carbon steel pipes, which refer to iron-carbon alloy pipes with a carbon content of less than 2%. In addition to carbon, carbon steel pipes also contain a small amount of silicon, manganese, sulfur and phosphorus.

Oil casing is a steel pipe used to support the walls of oil and gas wells to ensure the normal operation of the entire oil well after the drilling process and completion. Each well uses several layers of casing according to different drilling depths and geological conditions. Cement cementing is used after the casing is lowered into the well. Unlike oil pipes and drill pipes, it cannot be reused and is a one-time consumable material. Therefore, the consumption of casing accounts for more than 70% of all oil well pipes.

High-pressure steel pipes are high-quality carbon steel pipes, alloy structural steel pipes and stainless steel seamless steel pipes used in the manufacture of high-pressure vessels and pipes. High-pressure steel pipe has good comprehensive mechanical properties at room temperature and high temperature, and strict quality control, which is suitable for various working occasions under high-pressure conditions. High-pressure steel pipes are mainly used in boilers, diesel engine high-pressure oil pipes, fertilizer equipment and pipelines and other fields.

Carbon structural steel pipe is a seamless pipe that does not contain other alloying elements except for carbon (C) elements and a certain amount of silicon (Si) (generally not exceeding 0.40%) and manganese (Mn) alloying elements for deoxidation. . Such steels must guarantee both chemical composition and mechanical properties. The content of impurity elements such as sulfur (S) and phosphorus (P) is generally controlled below 0.035%.