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Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

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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...

Large diameter welded steel pipe production process

Large diameter welded steel pipe production process

Keywords :Large diameter welded steel pipe production process        Update : 2022-05-24        View(s) : 1014

1: Physical and chemical inspection of raw materials such as strip coils, welding wires, and fluxes. 2: The head and tail of the strip are butted, using single-wire or double-wire submerged arc welding, and automatic submerged arc welding is used after rolling into a steel pipe . 2: Before fo...

What is the stress state of the spiral steel pipe during the extrusion process

What is the stress state of the spiral steel pipe during the extrusion process

Keywords :What is the stress state of the spiral steel pipe during the extrusion process        Update : 2022-05-23        View(s) : 847

(1) During the extrusion process, the temperature of the inner lining of the spiral steel pipe increases continuously with the extrusion process. At the end of the extrusion, the temperature of the inner wall of the inner lining near the extrusion die is higher, reaching 631 °C. The temperature ...

How should the spiral steel pipe be anti-corrosion in the water supply pipe

How should the spiral steel pipe be anti-corrosion in the water supply pipe

Keywords :How should the spiral steel pipe be anti-corrosion in the water supply pipe        Update : 2022-05-20        View(s) : 978

Usually, we use epoxy coal tar paint. If the requirements are high, 3 oil and 2 cloth can be used. 3 coats of paint and 2 coats of fiberglass cloth, staggered construction. If it is required, the primer and topcoat of epoxy coal tar can be used directly, and each construction is twice. Simple and co...

What is the difference between fine polishing and rough polishing of stainless steel pipe fittings

What is the difference between fine polishing and rough polishing of stainless steel pipe fittings

Keywords :What is the difference between fine polishing and rough polishing of stainless steel pipe fittings        Update : 2022-05-19        View(s) : 851

What is the difference between fine polishing and rough polishing of stainless steel pipe fittings Rough polishing is the rough grinding and cutting of metal objects. Usually, this automatic polishing machine uses double polishing heads for polishing. The advantages of this...

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