What is LSAW and SSAW Pipe?
LSAW and SSAW are variants of SAW (submerged arc welded) pipes. The difference between them is the way they are welded. In LSAW pipes, the welding is longitudinal, which means that steel (hot rolled c...
How to Distinguish the Thread of Oil Casing Pipe?
Oil casing buckle type code: short circle (BTC), long circle (LC), buttress (BC), some imported goods are marked with the word LTC, that is, long threaded oil casing pipe.
Let us follow the ...
Common Drill Pipe Connection
According to the threaded button type drill pipe joints, there are four types: REG(Regular style connection), IF(Internal-flush style connection), FH(Full-hole style connection); NC(Numbered Connectio...
API Thread Specification
API Round Thread
There are short round thread casing and the long round thread casing points. There are some advantages about round thread casing as follows:
1. Improve the abrasion caused by resist...
Analysis of the Causes of Poor Weld Formation
1） The influence of welding current on weld formation
Under certain other conditions, with the increase of arc welding current, the weld penetration depth and remaining height increase, and the penet...
Advantages of High Frequency Straight Seam Welded Pipe
The straight seam high frequency welded steel pipe (ERW welded pipe) has advanced forming technology, reliable quality, good welding position, stable welding parameters, fast welding speed and high ou...
