Common standards for spiral pipes are generally divided into SY/T5037-2000(ministry standard, also known as spiral welded steel pipe for common fluid transmission pipelines), GB/T9711.1-1997(National standard, also known as the technical delivery conditions of steel pipe for petroleum and Natural gas Industry), API-5L(American Petroleum Institute, also known as pipeline steel pipe;It is divided into TWO grades: PSL1 and PSL2) and SY/T5040-92(spiral welded pipe for pile).
Classification: spiral seam submerged arc welding pipe for pressure fluid transportation is mainly used for pipeline transportation of oil and natural gas. Steel pipe has strong pressure bearing capacity, good plasticity and is convenient for welding and processing. General low pressure fluid transportation pipe with spiral seam submerged arc welding steel pipe is made of double-sided automatic submerged arc welding or single-side welding for water, gas, air and steam and other general low-pressure fluid transportation using submerged arc welding steel pipe. Features: spiral pipe characteristics: the production process of straight welded pipe is simple, the production efficiency is high, the cost is low, and the development is rapid. The strength of spiral welded pipe is generally higher than that of straight welded pipe. The welded pipe with larger pipe diameter can be produced with narrower billet, and the welded pipe with different pipe diameter can be produced with the same width of billet. However, compared with the straight seam pipe of the same length, the weld length increases by 30% and 100%, and the production speed is lower. Therefore, most of the smaller diameter welded pipes are welded by straight seam welding, and most of the large diameter welded pipes are welded by spiral welding. Material: the commonly used spiral tube materials in China are: Q235A, Q235B, Q345, L245, L290, X42, X52, X60, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb. Application: spiral pipe is mainly used in tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation and urban construction. It is one of the 20 key products developed in China. For liquid transportation: water supply, drainage, sewage treatment projects, mud transport, marine water transport. For gas transportation: gas, steam, liquefied petroleum gas. Used as structure: as pile driving pipe, as bridge; wharf, road, building structure pipe, ocean pile pipe and so on. Jinjiang Da Changjiang Steel Pipe Industry Co., Ltd. specializes in the production and sales of galvanized pipe, Fujian seamless pipe, Fujian spiral pipe and frame tube. Welcome to inquire: 0595-85521166.