Conveyor line screw pipe

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Conveyor line screw pipe

Spiral pipe, also known as spiral steel pipe or spiral welded pipe, is the low carbon structural steel or low alloy structural steel strip according to a certain helix Angle (called forming Angle) into a tube blank, and then welded pipe joints made of it can be used to produce large diameter steel pipe with narrow strip steel.

Introduction

organism

Also known as spiral barrel or spiral body. The outer diameter of the spiral tube is about 30 nanometers, the inner diameter is about 10 nanometers, and the spacing between adjacent spirals is about 11 nanometers. Each cycle of the spiral tube is composed of 6 nucleosomes. H1 histones are located on the inner surface of the spiral tube lumen and play an important role in maintaining the structure of the spiral tube. The 10 nm fibers made of nucleosomes spiral to form 30 nm coarse fibers, further squeezing the length of DNA by a factor of six.

Industrial pipe

Spiral pipe is mainly used for oil and natural gas pipeline, its specification is expressed by outer diameter * wall thickness. For spiral pipes with single-side welding and double-side welding, the welded pipe shall ensure that the hydraulic test, tensile strength and cold-bending performance of the weld meet the requirements.

Product characteristics

Spiral pipe features: straight seam welded pipe production process is simple, high production efficiency, low cost, rapid development. The strength of spiral welded pipe is generally higher than that of straight welded pipe, and welded pipe with larger diameter can be produced with narrower billet, and welded pipe with different diameter can also be produced with billet of the same width. But compared with the same length of straight seam pipe, the weld length is increased by 30~100%, and the production speed is lower. Therefore, small diameter welded pipe mostly adopts straight seam welding, large diameter welded pipe mostly adopts spiral welding.

Material

Commonly used spiral pipe materials in China are: Q235A, Q235B, Q345, L245, L290, X42, X52, X60, X70, X80, 0Cr13, 1Cr17, 00Cr19Ni11, 1Cr18Ni9, 0Cr18Ni11Nb.

Use

The spiral tube is mainly applied to tap water engineering, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction, and is 20 key products developed in our country. For liquid transport: water supply, drainage, sewage treatment engineering, mud transport, ocean water transport. For gas transportation: gas, steam, liquefied petroleum gas. For structure: for piling pipe, as a bridge; Wharf, road, building structure with pipe, ocean piling pipe.

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