All metals react with oxygen in the atmosphere to form an oxide film on the surface. Unfortunately, the iron oxide that forms on plain carbon steel continues to oxidize, allowing the rust to grow and eventually form holes. Carbon steel surfaces can be secured with paint or with oxidation-resistant m

The biggest difference between electric resistance welding (Electric Resistance Welding, ERW for short) and seamless steel pipe is that ERW has a weld seam, which is also the key to the quality of ERW steel pipe. Modern ERW steel pipe production technology and equipment, due to the unremitting effor

What are the production methods of steel bending pipe? One is to place rubber in the pipe and compress it with a punch above to make the pipe protrude; the other method is hydraulic bulging, filling the middle of the pipe with liquid, and the pressure of the liquid will bulge the pipe Into the requi

At present, my country is actively developing the steel structure industry. At first, it actively expanded the varieties of large-diameter spiral steel pipes used in the construction of steel structures to improve product performance. Including high-quality welded structural steel, high-strength hig

Analysis of the main reasons for the decline in the quality of steel bending pipes and how to pay attention. In pure bending, under the action of external force distance M, the outer arm wall of the neutral layer of the tube is thinned by tensile stress &1, and the inner side is subjected to compres

Original surface: 1 surface subjected to heat treatment and pickling treatment after hot rolling. Generally used for cold-rolled materials, industrial tanks, chemical industrial equipment, etc., the thickness is thicker from 2.0MM to 8.0MM. The stainless steel pipe processing factory also has a matt

1. The use of large-diameter stainless steel pipe can be divided into oil well pipes (casing pipes, oil pipes, and drill pipes, etc.), pipeline pipes, boiler pipes, mechanical structure pipes, hydraulic prop pipes, gas cylinder pipes, geological pipes, chemical pipes (high-pressure chemical fertiliz

First, the methods of cold galvanizing and hot galvanizing of galvanized steel pipes are different:1. Cold plating: It is a process of anti-corrosion treatment on the surface of workpieces through electrochemical principles.2. Hot-dip galvanizing: also known as hot-dip galvanizing, is a method in wh

(1) The warehouse should be selected according to the geographical conditions. Generally, an ordinary closed warehouse is used, that is, a warehouse with a roof, a wall, tight doors and windows, and a ventilation device;(2) Do not stack together with acid, alkali, salt, cement, and other materials t

1. The anti-embroidery treatment on the surface of the galvanized steel pipe is more durable, it will not oxidize too quickly, and will not form white rust on the steel pipe;2. Comprehensively protect the steel pipe. After heating, every part of the steel pipe is coated with zinc, and the concave an