ASTM steel pipe,ASTM elbow,ASTM fitting_HeBei Zhongyue Pipe Fittings Sales Co.,Ltd

23
Jul
2018
How to choose the quality of the thermal insulation steel pip
How to choose the quality of the thermal insulation steel pip
 
The insulation steel pipe is very important when selecting material, it determines the service life and maintenance cost of the project. The selection of steel pipes is whether the quality of the steel pipe, the density and distribution of...
21
Jul
2018
Socket pipe fitting
Socket pipe fitting
 
Socket pipe fittings are an important branch of high pressure pipe fittings, which play an important role and value in machinery, chemical industry, petroleum, construction and other industries. Reading this article, you have different type...
20
Jul
2018
20# seamless steel pipe
20# seamless steel pipe
 
Technological process: Hot rolling (extruded seamless steel pipe): round tube billet, heating, perforation, three roll skew rolling, continuous rolling or extrusion, depipe, sizing (or reducing diameter), cooling, tube straightening, qualit...
19
Jul
2018
Flat welded ring flanges (PJ/SE)
Flat welded ring flanges (PJ/SE)
 
Flat welded ring flanges are movable flanges, usually supporting the water and drainage fittings (the most common on expansion joints). When the factory comes out of the factory, there is a flange at both ends of the expansion joint. It is...
18
Jul
2018
40CrNiMo alloy steel pipe
40CrNiMo alloy steel pipe
 
Chemical composition: Carbon C:0.37~0.44 Silicon Si:0.17~0.37 Manganese Mn:0.50~0.80 Sulfur S: less than 0.025 Phosphorus P: 0.025 Chromium Cr:0.60~0.90 Nickel Ni:1.25~1.65 Copper Cu: less than 0.25 Molybdenum Mo:0.15~0.25 Mechanical proper...