API 5L Carbon Steel Spiral Welded Tubes & Tube s is widely used in different applications which include line Tubes for oil, gas, chemical and petrochemical industries, Tubes for oil and water wells and Tube for agriculture, structural, pilling and construction requirements. Carbon Steel Spiral Welded Tubes are used in onshore and offshore oil and gas Tubelines that require critical service, high API 5L Grade B Pipe Specification - Steel Pipe, OCTG Specification. API 5L Grade B pipe is a common grade pipe for oil and gas pipeline transmissions. It also called L245 Pipe refer ISO 3183, named by minimum yield strength 245 Mpa (355,000 Psi). Equivalent material ASTM A106 B or ASTM A53 B, which have similar value on chemical composition, mechanical properties, and applications.