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Heating requirements for spiral steel pipes

Heating requirements for spiral steel pipes

Keywords :Heating requirements for spiral steel pipes        Update : 2022-05-31        View(s) : 949

Before the steel is hot rolled, heating the raw material not only improves the mental plasticity, reduces the deformation force, but also facilitates rolling. In addition, during the heating process of the steel, some structural defects and stresses caused by the ingot can also be eliminated for the...

Spiral tubes can be divided into several categories according to their use

Spiral tubes can be divided into several categories according to their use

Keywords :Spiral tubes can be divided into several categories according to their use        Update : 2022-05-30        View(s) : 1024

There are roughly four types of spiral steel pipes according to their uses: drainage spiral steel pipes , dredging spiral steel pipes , piling spiral steel pipes , and oil and gas spiral steel pipes . Spiral steel pipe for drainage: Spiral steel pipe material for drainage: Q235A, ...

Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe

Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe

Keywords :Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe        Update : 2022-05-27        View(s) : 1

Spiral steel pipe is made of strip steel through the coiling machine, bending in a spiral direction, and then double-sided submerged arc welding by a capacitor. In the production process of spiral steel pipe welding, many galvanized channel steel situations such as missing welding and misalign...

Forged flange production process

Forged flange production process

Keywords :Forged flange production process        Update : 2022-05-26        View(s) : 839

Forged flange production process The forging process generally consists of the following procedures, namely, selecting high-quality steel billets, blanking, heating, forming, and cooling after forging. Forging process methods include free forging, die forging, and fetal membrane forg...

Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe

Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe

Keywords :Causes of trachoma at the welding seam of spiral seam submerged arc welded steel pipe        Update : 2022-05-25        View(s) : 853

Spiral steel pipe is made of strip steel passing through a coiling machine, bending in a spiral direction, and then double-sided submerged arc welding by capacitors. In the production process of spiral steel pipe welding, many galvanized channel steel situations such as missing welding and mis...

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