Thin-walled steel tube are made by cold drawing. Which is applicable to the general structure of carbon steel, low alloy steel, alloy steel thin-walled tube, mechanical structures; thin-walled fluid steel pipes used to transport general fluid; stainless steel thin-walled tube used in the chemical, petroleum, light industry, food, mechanical instruments industrial heat-resistant container, pipeline and mechanical structures.

The technical requirements galvanized steel pipe should reach. 1, grades and chemical composition. Galvanized steel grades and chemical composition shall comply with the stipulated GB3092 standard of black steel pipe steel. 2, the manufacture method: the manufacturing method of black steel pipe (furnace or electric welding) should be selected by the factory. Galvanized by hot dip galvanizing.

Process equipment distinction: cold drawn seamless steel pipe is usually 0.5 ~ 100T single-chain or double-chain cold drawn machine. Finished seamless steel tubes are usually carried out on a two-roll mill where the steel pipe is rolled in a ring-shaped bore formed by a variable cross-section round hole and a stationary tapered head.

The major equipment such as Plate Edge Milling Machine, Plate Edge Crimping Machine, Pipe Forming Press, Tack Welding Machine and Pipe Expander all adopt the technology and equipment of SMS MEER. The SMS MEER is the most famous special manufacturer to design and manufacture the whole production line equipment for LSAW pipe in the world . They have supplied all kinds of steel pipe manufacturing equipment for plenty of LSAW pipe manufacturers in the world and have got a very good reputation in this field.

When used, stainless ​steel pipe is more convenient, but this pipe is a note in use, especially we pay more attention in the welding.

ERW welded steel pipe: High frequency electric resistance welded pipe, raw material is hot rolled steel plate, through the continuous forming, bending, welding, heat treatment, sizing, straightening, cutting process.

The construction process of pipe pile: This project venue silt audience distribution, maximum thickness of 13.5 meters at the pile tip bearing layer is relatively hard weathered granite layer; taking into account the construction of pile construction process of hammering method, and static construction pile pressure method compared to pile more likely to cause cracks, especially in the silt soil, thereby reducing corrosion resistance pile, the design requirements hydrostatic method construction.

J55 and N80 are a common part of the oil casing material. However, these two materials are some differences.

Pipe shall not be stacked directly on the ground, steel or concrete floor, the first layer steel pipe from the ground a distance not less than 0.20m. To avoid pipe damp, dust and pollution, pipe (or tube bundle) shall not be placed in the dust, damp places, both ends of the pipe must be bundled protective paper or plastic bags, etc., to prevent dust from entering.

Working pressure and diameter of oil and gas pipelines, are first identified in pipeline design framework technical parameters. Working pressure directly determine the number of pumping stations and compressor stations, steel consumption in the power station unit and piping.