API 5L grade B Steel Pipe is a hollow section, end-to-end, unwelded steel pipe. 10mm 35mm 61mm carbon steel seamless pipes is also an indispensable material for various conventional weapons, and the barrels, barrels, etc. are all made by seamless pipes. Cold rolled seamless steel pipe can be divided into round pipe and special-shaped pipe according to the shape of cross-sectional area. Since the circle area is the largest under the condition of equal perimeter, more fluid can be transported with Astm A53 Gr.b seamless steel pipe. 30 Inch seamless steel pipe compared to solid steel such as round steel. Api 5l standard steel pipe is lighter in weight with the same bending and torsional strength. Astm Api 5l Oil And Gas Steel Pipe is an economical section steel widely used in the manufacture of structural and mechanical parts, such as oil drill pipes, automobile transmission shafts, bicycle frames and steel scaffolding used in building construction. Making ring parts with 23m…