Q: What is a carbon steel pipe?
A: A carbon steel pipe is a tubular product made primarily from iron and carbon, with carbon being the main alloying element. It may contain small amounts of other elements like manganese, silicon, and sulfur.
Q: How does carbon content affect the properties of steel pipe?
A: Higher carbon content increases tensile strength and hardness but decreases ductility and weldability. Low-carbon steels are more formable and easier to weld.
Q: What is the difference between "Seamless" and "Welded" pipe?
A: Seamless pipe is formed from a solid billet without a welded seam. Welded pipe is formed by rolling steel plate/sketch and welding the seam (e.g., ERW, SAW). Seamless generally has more uniform strength and is used for higher pressures.
Q: What does "ERW" stand for?
A: Electric Resistance Welded. It's a common process where the edges of the steel strip are heated by electrical resistance and forged together to form a weld.
Q: What does "SAW" stand for?
A: Submerged Arc Welding. A process used for larger diameter pipes where the weld arc is submerged under a layer of flux, resulting in a thick, high-quality weld.
