Summary: : it refers to the processing of square tube which places metal in a closed Jane and applies pressure at the end to extr[Read the full text]
Summary: In this period, the technology of continuous rolling pipe was not mature.The floating mandrel mill is in its heydayOke,T[Read the full text]
Summary: BIVA podraskaWeather resistant square tube,At this time, if the welding wire of the same material is used for spot weldi[Read the full text]
Summary: After chemical pickling, the square tube can be well protected by electrolysis. These are simple ways to prolong the ser[Read the full text]
Summary: B. tool steel: (a) carbon tool steel; (b) Alloy tool steel; (c) High speed tool steel.Spraying (throwing) derusting spra[Read the full text]
Summary: The disadvantage of empty bending is that during synchronous empty bending at the upper and side, due to the pressure ge[Read the full text]
Summary: The characteristics of square pipe are as follows: the production process of square pipe is simple, the production effic[Read the full text]
Summary: The reason why the surface of fake and shoddy materials is easy to crack is that its blank is adobe with many air holes.[Read the full text]
Summary: Normalized: A. pearlite steel; b. Bainitic steel; c. Martensitic steel; d. Austenitic steel.The local heat release in th[Read the full text]
Summary: Principle of cold drawing strengthening: the lattice defects of steel increase during plastic deformation and the seriou[Read the full text]
Summary: Normalized: A. pearlite steel; b. Bainitic steel; c. Martensitic steel; d. Austenitic steel.QB square tube is a product [Read the full text]
Summary: B. spring steel C. bearing steel tool steel: A. carbon tool steel; b. Alloy tool steel; c. High speed tool steel.Precisi[Read the full text]
Summary: Square pipe is the name of square pipe, that is, steel pipe with equal side length. It is made of rolled strip steel aft[Read the full text]
Summary: Stainless steel square tube for fluid transportation (gbt-) is a hot-rolled (extruded, expanded) and cold drawn (rolled)[Read the full text]
Summary: C. special performance steel: (a) stainless and acid resistant steel; (b) Heat resistant steel; (c) Electric heating all[Read the full text]
Summary: Tool derusting mainly uses tools such as steel wire brush to polish the surface of square pipe, which can remove loose o[Read the full text]
Summary: Empty bending empty bending is the bending moment formed in one direction between the outer roll and the outer wall of t[Read the full text]
Summary: Generally, chemical and electrolytic pickling are used for pickling treatment. Only chemical pickling is used for pipeli[Read the full text]
Summary: Steel for construction and engineering according to the classification of use without phase transformation or partial ph[Read the full text]
Summary: Compared with other welding square pipe welding has many advantages, the material only needs to be heated below the melt[Read the full text]