hunan standard steel co.,ltd

hunan standard steel co.,ltd
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hunan standard steel co.,ltd

 •  September 22

There are four stages of tensile test for small diameter seamless steel tubes
(1) Elastic phase: the deformation of this stage of the sample is completely elastic, all write the load, the sample will restore its original length. The elastic modulus of the material can be determined in this stage.
(2) Yield stage: the elongation of the specimen...

hunan standard steel co.,ltd

 •  September 21

Seamless steel pipe products and specifications are very numerous, its performance requirements are all kinds. All of these should be distinguished by changes in user requirements or working conditions. Usually, smls pipe products according to the cross-sectional shape, production methods, pipe material, connection, plating characteristics and use...

hunan standard steel co.,ltd

 •  September 20

Hot-rolled smls pipe is defined in the steel pipe on the inner surface of the spiral, semi-spiral or irregular distribution of jagged folding, and some appear as straight-shaped alice skin. Some of the inner fold in the head of the steel pipe, and some exist in the entire steel pipe; or regular, or irregular. There are broken within the defective...

hunan standard steel co.,ltd

 •  September 14

1. Material problem of smls pipe
Many companies use more material materials, usually refers to the amount of nickel. Although it can be used to distinguish medicine, it is clear that this is a misunderstanding, because the small charge of nickel containing only more than 7 can not distinguish out. But the price difference between raw materials is...

hunan standard steel co.,ltd

 •  September 13

Ordinary steel pipes, such as tap water pipes, are generally welded by bending the plate, and you can find a weld on it; the thicker diameter is generally a spiral weld.
SMLS pipe is generally the molten state of molten steel through the annular slit backlog and then after stretching and other processing technology molding, so there is no weld....

Main technical characteristics of dsaw steel pipe
First, the steel pipe forming process, the steel plate deformation uniform, residual stress is small, the surface does not produce scratches. The machined steel pipe has greater flexibility in the size and thickness of the steel pipe, especially in the production of high-grade thick-walled steel...

Longitudinal welded pipe on the form of welding is roughly divided into two types: the first is double-sided submerged arc welding, the second is high-frequency welding. But in between the two can make the diameter of the steel pipe is very different. Such as high-frequency welding of the pipe wall thickness of the general is not more than 12mm,...

Spiral tubes for water transport if it is drinking water and need to IPN8710 anti-corrosion. IPN8710 anti-corrosion spiral tubes for water transport from the aliphatic polyurethane prepolymer and epoxy resin, high-quality pigments, additives, solvent composition. Dedicated to food, drinking water and other equipment in contact, piping water pipes,...

Seamless steel pipe in the heat treatment, there is thermal stress and tissue stress, this internal stress can be superimposed or partially offset, is complex and varied, because it can with the heating temperature, heating speed, cooling, cooling speed, parts shape and size changes, so heat treatment deformation is inevitable. Seamless steel pipe...

The economic benefits of aluminum alloy drill pipe are mainly manifested in the following aspects:
① Get a very high technical - economic benefits, although the payback period is relatively long, but more competitive than steel drill pipe;
② Shorten the drilling time, no special requirements on the rig;
③ Aluminum drill pipe is mainly used for...