Specifications: diameter: 320 to 127 mm thickness: 0.4 to 12.7 mm Length: 6 m above, and, in accordance with customer demand, supply and other specifications of steel pipe

Production of spiral steel pipe


 

Production of spiral steel pipe
Process performance:
1. Surface quality:
The steel surface cracks are not allowed, scarring and folding.
Steel surface allows the bump, but shall not exceed the height of the transverse ribs, depth and height of the other defects on the steel surface shall not be greater than the site where the size of the allowable deviation.
spiral steel pipe
Size, shape, weight and allowable deviation:
1) the length and permissible deviations
a curvature and ends: straight steel pipe bending change should not affect the normal use, reinforced a total length of not more than 40% of the total curvature; pipe ends should shear integrity, local deformation should not affect the use
b, length: steel pipe usually definite length delivery, a specific length should be specified in the contract;? steel pipe coil delivery, each plate is a steel pipe, allowing each batch of 5%? Number of Discs (two in less than two) is composed of two steel pipes. Disk heavy disc diameter negotiated by both parties stipulate.
2) ribbed steel plate, the surface shape and size to allow deviation
Ribbed steel the transverse ribs should meet the following basic requirements:
Transverse ribs and steel disk axis angle β should not be less than 45 degrees, when the angle is not more than 70 degrees, the steel pipe opposite sides of the upper cross rib in the direction should be opposite;
Steel pipe on opposite sides of the gap between the end of the transverse rib (including the width of the longitudinal ribs) should not be greater than the sum of 20% of the circumference of the reinforced nominal;
When the steel pipe nominal diameter of not more than 12mm, the relative rib area of ​​not less than 0.055;? Nominal diameter of 14mm and 16mm, relative rib area of ​​not less than 0.060; nominal diameter greater than 16mm, the relative rib area should not be less than 0.065.
Reverse bending performance.
According to the requirements of the demand-side, steel pipe the reverse bending performance test.
A corresponding increase in a steel pipe diameter reverse bending test the apex diameter than bending test. First bent 45 degrees forward, after the reverse bend 23 degrees, 23 degrees after the reverse bending. After the reverse bending test, the steel pipe by the curved parts of the surface shall not crack.

上一篇:ASTM A192 pipe, ASME SA192 steel pipe - American Standard

下一篇:Carbon Steel Pipes Value-Added Services

 Copyright ©2012 New SindaIf you do not find the information you need, Click Here  Get Support

New Update Pipe List

    HEBEI NEWSINDA SEAMLESS STEEL PIPES
    NEWSINDA SEAMLESS STEEL PIPES Products:Boiler and Heat Exchanger TubesPressure Tubes and Line PipeMechanical TubesAutomotive TubesHollows for redraw.

    OCTG Casing Tubing
    OCTG Casing Tubing,Seamless API 5CT casing pipe / tubing / coupling Standard: API 5CT Size: 1.05''-----4-1/2'' Material: H40, J55, K55, N80, L80, P110 etc. Pipe end: EU, NU Length Range: R1, R2, R3 Application: For transportation.

    API 5CT N80 P110 114.3mm pipe for oil field
    API 5CT N80 P110 114.3mm petroleum casing pipe.

    ASTM A53/ASME SA53 Seamless steel pipe
    ASTM A53/ASME SA53(GR.A/GR.B/GR.C) pipe include:, Black steel pipe,Welded steel pipe, Seamless steel pipe Common: ASTM A53/ASME SA53 Can quickly deliver diverse grades of steel pipes, like A53 Grade.A, A53 Grade.B and other people. Short Introduction ASTM.
Contact Us Online To Serve You Better

Hot Click PRO

    Longitudinal Welded Pipe
    Longitudinal Welded Pipe,Welded steel pipe is steel plate with the bending deformation of round, square and other shapes and then welded into the surface of the pipe joints. Welded steel pipe used is steel or steel billets. We supply of weld. steel pipe mechanical properties
    steel pipe mechanical properties Is to ensure that the steel pipe end-use properties (mechanical properties), an important indicator, it depends on the chemical composition and heat treatment of steel pipe system. Steel pipe standards, depen. gas pipelines,Dynamic simulation tools for multiphase oil an
    API5L Oil/gas Pipeline/Spiral Welded Steel Pipe OD: 219.1 mm - 3048mm for conveying water,drainage,coal gas etc. JIS STK steel pipe G3444 G3445
    JIS G3444 STK steel pipe,2.Size:13.7-812mm 3.Material:JIS G3444 STK400/490/500/540/290 .JIS STK steel pipe G3444 G3445.