Seamless Cold Drawn High Pressure Fuel Injection Tube Specialty seamless stainless steel tubing is used in many applications, including the flow of gas, steam and liquid in harsh environments. Some manufacturers specializing in this field produce seamless, stainless steel tubing ranging from one inch in diameter to finer than a human hair, and in continuous lengths that can exceed a mile. CHEMICAL COMPOSITION(%) Steel grade Name Steel Number C(% max) Si(% max) Mn(% max) P(% max) S(% max) E215 1.0212 0.10 0.05 0.70 0.025 0.015 E235 1.0308 0.17  …