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: 410116Phone:0086-731-8873-9521
Keywords :Precision-rolled seamless steel pipe Update : 2023-06-25 View(s) : 690
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...
Keywords :The difference between hot-dip galvanized steel pipe and cold-dip galvanized steel pipe Update : 2023-06-21 View(s) : 784
Cold-dip galvanizing refers to electroplating, and hot-dip galvanizing refers to the zinc plating of steel pipes in molten zinc. The difference between the two is that the former has poor corrosion resistance, while the latter has good corrosion resistance. The hot-dip galvanized steel pipe...
Keywords :Quality requirements for seamless steel pipes Update : 2023-06-20 View(s) : 897
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...
Keywords :Causes of cracks in Q345B seamless steel pipe Update : 2023-06-19 View(s) : 734
Special pipes for oil and natural gas drilling and transportation are collectively referred to as petroleum geological pipes. Among them, the geological pipe is specially used for geological exploration and is the main tool for exploring underground resources. Geological pipe includes geological dri...
Keywords :Stainless steel pipe welding precautions Update : 2023-06-16 View(s) : 717
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...