News
-
ASTM A53 Seamless tubing
ASTM A53—Uncoated and hot-dip galvanized welded and seamless nominal steel pipe There are two types of seamless tubing: DIN and ASTM American standard seamless steel tube. German seamless steel tube standard, or JIS Japanese seamless steel tube that complies with GB standards. While ASTM America...Read more -
Rust removal technology for large-diameter spiral steel pipes
The surface of spiral steel pipe is mainly polished with wire brush, etc. Cleaning and preheating of large-diameter spiral steel pipes can remove loose or floating scales, rust, welding slag, etc. The rust removal ability of hand tools can reach the Sa2 level, while the rust removal ability of po...Read more -
API 5CT oil casing pipe hydrostatic pressure test
The hydrostatic pressure test is a crucial step in the manufacturing and production process of steel pipes. Its purpose is to find out how resistant the steel pipe is to leaks under typical test pressure and pressure stabilization time. It is a crucial method of examining the general quality of s...Read more -
Analysis of factors affecting the process of high-frequency straight seam welded pipes
The main process parameters of high-frequency straight seam welded pipes include welding heat input, welding pressure, welding speed, opening angle size, the position and size of the induction coil, the position of the resistor, etc. These parameters have a great impact on improving the quality o...Read more -
What is the difference between straight seam steel pipe and spiral steel pipes
First: welding process In terms of the welding process, the welding methods of spiral steel pipes and straight seam steel pipes are the same, but straight seam steel pipes will inevitably have many T-shaped welds, so the probability of welding defects is also greatly increased, and the welding re...Read more -
Introduction to methods of rust removal from spiral steel pipes
1. Sandblasting and rust removal method: Sandblasting and rust removal uses a high-power motor to drive the sandblasting blades to rotate at high speed so that abrasives such as steel sand, steel shots, iron wire segments, and minerals can sandblast the surface of the steel pipe under the effect ...Read more