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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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Anti-corrosion inside the steel pipe

Anti-corrosion inside the steel pipe

Keywords :Anti-corrosion inside the steel pipe        Update : 2023-06-27        View(s) : 268

Steel pipe inner wall anti-corrosion is an anti-corrosion device for the inner wall of the steel pipe welding zone, which is characterized by a sacrificial anode made of lead, magnesium, zinc, or their alloys connected to a terminal made of conductive metal material, the terminal The outer edge ...

Precision-rolled seamless steel pipe

Precision-rolled seamless steel pipe

Keywords :Precision-rolled seamless steel pipe        Update : 2023-06-25        View(s) : 237

The main business is DIN-2391 standard hydraulic seamless steel pipe (GB3639-83), which has been tested and confirmed by the national authority, and all indicators of the steel pipe fully meet the technical standards of German, Japanese, and American seamless steel pipes. Its salient features ar...

Quality requirements for seamless steel pipes

Quality requirements for seamless steel pipes

Keywords :Quality requirements for seamless steel pipes        Update : 2023-06-20        View(s) : 309

The surface quality of steel pipe: requirements for smooth surface a. Dangerous defects: cracks, inward folds, outward folds, crushing, delamination, scarring, concaves, convex hulls, etc. b. General defects: pockmarks, green lines, scratches, bruises, slight inner and outer straights, roller ma...

Stainless steel pipe welding precautions

Stainless steel pipe welding precautions

Keywords :Stainless steel pipe welding precautions        Update : 2023-06-16        View(s) : 277

1. The power supply with vertical external characteristics is adopted, and the positive polarity is used for DC (the welding wire is connected to the negative pole). 2. It is generally suitable for welding thin plates below 6mm. It has the characteristics of a beautiful weld shape and small wel...

Non-destructive testing of steel pipe fittings and steel flanges

Non-destructive testing of steel pipe fittings and steel flanges

Keywords :Non-destructive testing of steel pipe fittings and steel flanges        Update : 2023-06-14        View(s) : 276

1. Tees, crosses, press-formed reducers, and pipe caps formed by the direct cutting of bars of all material categories shall be non-destructively tested one by one; among them, carbon steel, alloy steel, and low-temperature steel shall be tested according to NB/T47013.4 or related specifications for...

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