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High-pressure boiler tubes are mainly used to manufacture superheaters, reheaters, water-cooled walls, economizers, etc. of supercritical or ultra-supercritical boilers. The steel tubes are required to have high endurance strength, high oxidation and corrosion resistance, and good structural stability. Main grades or steel grades: SA-179M, SA-192M,

Precision seamless steel pipe is a kind of high-precision steel pipe material after cold drawing or hot rolling. Due to the advantages of no oxide layer on the inner and outer walls of precision steel pipe, no leakage under high pressure, high precision, high finish,

20# steel is a high-quality low-carbon steel, cold extruded carburized hardened steel with low strength, good toughness, plasticity and weldability, tensile strength of 355~500Mpa, and elongation of 24%. 20# is used for metal structures and components working at -40℃ to +450℃. Hot-rolled and forged long

A straight seam steel pipe is a steel pipe with a weld parallel to the longitudinal direction of the steel pipe. It is usually divided into metric electric welded steel pipe, electric welded thin-walled pipe, transformer cooling oil pipe, etc. The production process of straight

Spiral seam submerged arc welded steel pipe is formed by bending hot-rolled strip steel into a spiral shape, and the inner and outer seams are welded by submerged arc automatic welding to form a spiral seam steel pipe (also called spiral welded pipe, spiral

API 5L generally refers to the implementation standard of pipeline steel pipes. Pipeline steel pipes are used to transport oil, gas, water, etc. extracted from the ground to oil and gas industrial enterprises. Pipeline steel pipes include seamless steel pipes and welded steel pipes. At

The main purpose of galvanizing steel pipes is to improve their corrosion resistance. Galvanizing is a process that covers the surface of steel pipes with a layer of zinc. This zinc coating can provide good protection for the steel pipes. The following are the main

Carbon steel coils are coils made by smelting, steelmaking and other processes from iron ore containing a certain amount of carbon elements. Its main components are iron and carbon. The carbon content is generally between 0.05% and 2.0%. The difference in carbon content will affect

Galvanized steel wire is a type of steel wire that has been galvanized and has the characteristics of corrosion resistance, wear resistance and high strength. It is widely used in construction, agriculture, furniture manufacturing, automobile parts and other fields. According to the thickness and use

The advanced grouting small catheter is a technique used in tunnel excavation construction. For the sections that are about to be excavated but have not yet been excavated, the construction technology is to support first and then excavate. The main purpose is to prevent collapse