1. Basic Functions and Classification of ValvesValves primarily perform the following functions: shutting off or connecting the flow of media within a pipeline, regulating media flow rate and pressure, altering flow direction, and ensuring the safety of pipelines or equipment (e.g., safety valves, p

Weathering steel—fully known as "atmospheric corrosion-resistant steel"—is a type of low-alloy steel that falls between ordinary carbon steel and stainless steel. By adding small amounts of alloying elements such as copper, phosphorus, chromium, and nickel to ordinary carbon steel, a dense, protecti

H40 / J55 / K55 (Entry-level)These three grades belong to API 5CT Group 1; they share the same chemical composition requirements but differ primarily in mechanical properties. H40 has the lowest strength and is used for the shallowest, lowest-pressure wells. J55 and K55 share the same yield strength

Here is the Table of Difference of Caing and Tubing: