Steel Knowledge

Do you know the factors that affect the outer diameter accuracy of thick walled rectangular tubes?

The outer diameter accuracy of thick walled square rectangular pipe is determined by human, and the result depends on the customer. It depends on the customer’s requirements for the outer diameter of seamless pipe, the operation and accuracy of steel pipe sizing equipment, and the steel pip... Read More

Do you want to make your products lighter and stronger than before?

By using thinner and stronger structural and cold forming steels like high-strength, advanced high-strength and ultra-high-strength steels, you can save on production costs thanks to easy bendability, cold-forming properties and surface treatment. Additional savings in welding work and filler mat... Read More

Method of removing oil on the surface of square tube

It is inevitable that the surface of the rectangular tube will be coated with oil, which will affect the quality of rust removal and phosphating. Next, we will explain the method of oil removal on the surface of the rectangular tube below. Read More

Surface defect detection method of square pipe

The surface defects of square tubes will greatly reduce the appearance and quality of products. How to detect the surface defects of square tubes? Next, we will explain the surface defect detection method of the lower square tube in detail. 1、 Eddy current testing. Eddy current testing includes ... Read More

How to straighten galvanized square pipe?

Galvanized square pipe has a good performance, and the demand for galvanized square pipe is very large. How to straighten the galvanized square pipe? Next, let’s explain it in detail. The zigzag of galvanized square pipe is caused by improper adjustment of rolling mill, residual stress duri... Read More

Essential difference between welded square pipe and seamless square pipe

The production process of square tubes is simple, the production efficiency is high, the varieties and specifications are various, and the materials are different. Next, we will explain the essential differences between welded square tubes and seamless square tubes in detail. 1. Welded square pip... Read More