what is smls in piping? smls pipe & tube meaning: smls is the abbreviation of "seamless", which specifically refers to seamless steel pipe in the field of pipelines. smls pipe is a weld-free pipe produced by hot rolling, cold rolling, cold drawing or extrusion. its manufacturing process is

welded steel pipe meaning: welded steel pipes & tubes refer to steel pipes with seams on the surface that are formed by bending steel strips or steel plates into round, square and other shapes and then welding them. the blanks used for welded steel pipes are steel plates or strips. its core feature

what is a seamless carbon steel pipe?seamless carbon steel pipe is a weld-free metal pipe made of carbon steel (carbon content 0.02%~2.11%) through hot rolling, cold rolling or cold drawing. its core feature is that the overall structure is continuous, and its pressure bearing capacity is bette

api 5l erw line pipe is a high-frequency electric resistance welded (erw) steel pipe produced according to the api 5l standard of the american petroleum institute (api), which is specially used for land and submarine pipeline transportation systems of energy media such as oil and natural gas.core fe