22
Mar.2026
- What is unequal-leg angle steel?
Unequal-leg angle steel is a type of steel used in construction. One end of it is a flat plate with an unequal leg angle, while the other end is a steel pipe with a conical round hole. This steel can be used to manufactu...22
Mar.2026
- What is the thickness of cold-dip galvanized square tube?
The exact thickness of cold-dip galvanized square tubes varies depending on product standards and manufacturers. Generally, the thickness of cold-dip galvanized square tubes can range from a few millimeters to tens of mi...22
Mar.2026
- Electroplating and environmental protection
1. Metal surface treatment includes cleaning before surface treatment, electroplating, passivation film protection, mechanical processing, and coating coverage, with electroplating being the main method. 2. Classificatio...22
Mar.2026
- How many types of angle steels are there
The national standard angle iron, commonly known as angle bar, is a long strip of steel with two perpendicular sides. The dimensional deviation must be controlled within 0.25 millimeters according to national standards. ...22
Mar.2026
- Process flow for drawing precision seamless tubes
Since the size of the die hole for drawing is smaller than the outer diameter of the billet before drawing (excluding expansion drawing), in order to ensure that the front end of the billet can smoothly pass through the ...
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