Why is ASTM A672 LSAW steel pipe called "submerged arc welded"?
ASTM A672 LSAW steel pipe is called "submerged arc welded" because its manufacturing process is called submerged arc welding (SAW), which involves burying the welding arc under a layer of flux.
What is LSAW steel pipe?
LSAW steel pipe refers to steel pipe manufactured using the submerged arc welding process, with one or two longitudinal welds. LSAW is an abbreviation for Longitudinal Submerged Arc Welded, also simply called SAWL.
What are the common forming methods for ASTM A672 LSAW steel pipe?
The most common forming methods for ASTM A672 LSAW (longitudinal submerged arc welded) steel pipe are JCOE and UOE.
What heat treatments are typically required after welding ASTM A672 LSAW steel pipe?
The heat treatment required after welding ASTM A672 LSAW steel pipes depends on the grade and type of steel, but common processes include post-weld heat treatment (PWHT), normalizing, quenching, and tempering.A certain holding time is required. Higher grade steels may require normalizing or quenching and tempering.
What are the main steps in the manufacturing process of LSAW steel pipes?
The manufacturing process of LSAW steel pipes mainly includes steel plate pretreatment, forming, welding, testing, and finishing. The specific process flow is shown below:
