The inspection of steel pipe generally includes the inspection of geometric dimension and surface quality; Chemical composition, mechanical properties, technological properties, high and low power structure inspection; Non destructive testing; Inspection of some special properties, length measurement and weighing, etc. (1) Geometric dimension inspection of steel pipe The outer diameter, wall thickness, bending and length of steel pipe can…
Classification of Steel Pipes 1. Classification by Production Method (1) Seamless pipe – hot rolled pipe, cold rolled pipe, cold drawn pipe, extruded pipe, pipe jacking. (2) Welded pipe. (a) According to the process – arc welded pipe, resistance welded pipe (high frequency, low frequency), gas welded pipe, furnace welded pipe. (b) It can be divided into straight welded…
Surface Finish Grade of Stainless Steel Original surface: No.1 hot rolled surface after heat treatment and pickling treatment. It is generally used for cold rolling materials, industrial tanks, chemical industrial devices, etc. the thickness ranges from 2.0 mm to 8.0 mm. Blunt surface: No.2D cold-rolled, heat-treated and pickled, with soft material and silvery white surface, is used for deep…
Analysis of the influence of shipping blockage on stainless steel in Suez Canal It has an impact on the stainless steel market. Looking back at the export data of stainless steel in the past five years, China’s stainless steel export to Europe is about 400000-700000 tons / year, accounting for 12-19% of China’s total annual stainless steel export, mainly…
North Steel (Tianjin) Group Co., Ltd
+8613803087999
Room 604, No. 2 Beichen Building, Beichen District, Tianjin, China
Australian Office：93 barker street, Kingsford, Sydney, NSW, Australia
