Welded steel pipe for low pressure fluid transmission (GB / t3092-1993) is also known as general welded pipe, commonly known as black pipe. It is a welded steel pipe used for conveying water, gas, air, oil, heating steam and other general low pressure fluids and other purposes. The wall thickness of steel pipe connection is divided into ordinary steel pipe and thickened steel pipe; The nozzle end is divided into non threaded steel pipe (smooth pipe) and threaded steel pipe. The specification of steel pipe is expressed in nominal diameter (mm), which is the approximate value of inner diameter. It is customary to use inches, such as 11 / 2. The welded steel pipe for low-pressure fluid transmission is not only directly used for fluid transmission, but also widely used as the original pipe of galvanized welded steel pipe for low-pressure fluid transmission
galvanized welded steel pipe for low pressure fluid transmission (GB / t3091-1993) is also known as galvanized welded steel pipe, commonly known as white pipe. It is a hot-dip galvanized welded (furnace welding or electric welding) steel pipe used to transport water, gas, air, oil, heating steam, warm water and other general low pressure fluids or other purposes. The wall thickness of steel pipe connection is divided into ordinary galvanized steel pipe and thickened galvanized steel pipe; The nozzle end is divided into non threaded galvanized steel pipe and threaded galvanized steel pipe. The specification of steel pipe is expressed in nominal diameter (mm), which is the approximate value of inner diameter. It is customary to use inches, such as 11 / 2
ordinary carbon steel wire sleeve (gb3640-88) is a steel pipe used to protect wires in electrical installation projects such as industrial and civil buildings and installation of machinery and equipment
straight seam electric welding steel pipe (yb242-63) is a steel pipe whose weld is parallel to the longitudinal direction of the steel pipe. It is usually divided into metric welded steel pipe, welded thin-walled pipe, transformer cooling oil pipe, etc
spiral seam submerged arc welded steel pipe (SY5036-83) for pressure fluid transmission is a spiral seam steel pipe used for pressure fluid transmission, which takes hot-rolled steel strip as pipe blank, often warm spiral forming and welded by double-sided submerged arc welding. The steel pipe has good pressure bearing capacity and powerful welding. After various strict technical inspections and tests, it can be used effectively. The steel pipe has large diameter, good transmission efficiency, and can save the investment in laying pipelines. It is mainly used for pipelines transporting oil and natural growth gas
the spiral seam high-frequency welded steel pipe (sy5038-83) for pressure fluid transportation is a spiral seam high-frequency welded steel pipe for pressure fluid transportation, which uses hot-rolled steel strip as pipe blank, often warm spiral forming and high-frequency lap welding. The steel pipe has good pressure bearing capacity and plasticity, which is convenient for welding and processing; After various strict and technical inspections and tests, powerful steel pipes are used, with large diameter and good transmission efficiency, and the investment in laying pipelines can be saved. It is mainly used for laying pipelines for transporting oil, natural growth gas, etc
spiral seam submerged arc welded steel pipe (SY5037-83) for general low-pressure fluid transportation is a submerged arc welded steel pipe for general low-pressure fluid transportation such as water, gas, air and steam, which is made of hot-rolled steel strip coil as pipe blank, often warm spiral forming and double-sided automatic submerged arc welding or single-sided welding
the spiral seam high-frequency welded steel pipe (sy5039-83) for general low-pressure fluid transportation uses hot-rolled steel strip as pipe blank, often warm spiral forming, and high-frequency lap welding method is used to weld the spiral seam high-frequency welded steel pipe for general low-pressure fluid transportation
spiral welded steel pipe for pile (sy5040-83) is made of hot-rolled steel strip coil as pipe blank, often warm spiral forming, double-sided submerged arc welding or high-frequency welding. It is used for steel pipe for foundation piles such as civil building structures, wharfs and bridges
