Welded steel pipe is used for transporting water, gas, air, oil and heating steam and other general low pressure fluid and other uses. Then divided into ordinary steel pipe wall thickness and thicker steel; take over the side into the form without steel tube (fluorescent tubes) and with steel pipe. Pipe specifications with nominal diameter (mm), said nominal diameter is the diameter of the approximation. Traditionally commonly expressed in inches, such as 11/2 and so on. Low pressure liquid delivery welded steel pipe in addition to direct for conveying fluids, but also widely used as a low pressure fluid delivery galvanized welded steel pipe of the original tube.
2. The low pressure fluid delivery galvanized welded steel pipe (GB / T3091-1993), also known as galvanized welded steel pipe, commonly known as white tube. Is used for conveying water, gas, air, oil and steam heating, warm water, etc. are generally lower pressure fluid or other uses hot-dip galvanized welded's (furnace brazed or welded) steel pipe. Pipe wall thickness then divided into ordinary galvanized steel and thicker galvanized steel; take over the side into the form of threaded galvanized steel and non-threaded galvanized steel band. Pipe specifications with nominal diameter (mm), said nominal diameter is the diameter of the approximation. Traditionally commonly expressed in inches, such as 11/2 and so on.
3. Ordinary carbon steel wire casing (GB3640-88) industrial and civil construction, installation of machinery and equipment for the protection of electrical installation engineering steel wires.
4 straight seam welded steel pipe (YB242-63) is parallel to the longitudinal weld steel pipe steel pipe. Usually divided into metric welded steel pipe, welded thin-walled tube, transformer cooling tubing and the like.
5. Pressure fluid transport with spiral submerged arc welded pipe (SY5036-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using double-sided submerged arc welding method for pressure fluid transfer spiral pipe joints. Strong pressure steel, good welding performance, through a variety of rigorous scientific examination and testing, the use of safety can be *. Large diameter steel pipes, transmission efficiency, and can save the laying of pipeline investments. Mainly used to transport oil, natural gas pipelines.
6. Pressure fluid transport with spiral seam high frequency welded steel pipe (SY5038-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using high frequency lap welding method for transporting pressurized fluid spiral seam high frequency welded steel pipe. Strong pressure steel, plastic, and easy welding and machining molding; and through a variety of rigorous scientific examination and testing, the use of safety can be *, large diameter steel pipes, transmission efficiency, and can save the laying of pipeline investments. Mainly used for laying transport oil, natural gas pipeline.
7. The general low pressure liquid delivery spiral submerged arc welded pipe (SY5037-83) is a hot-rolled steel strip coils for the tube, often warm spiral shape, using double-sided or single-sided automatic submerged arc welded into the legal system for water, gas, air and steam low pressure liquid delivery SAW pipe.