... export package good reputation Production seamless steel pipe Brand QKLS Specification0.2-870mm× 2-270mm Standard GB, ASTM, API 5L, API 5CT, ... 10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235, ST42,ST52,A106-a,A106-b, and so on Length 2-12m. As customers ... 1. seamless steel pipe 2. ERW steel pipe 3. steel casing 4. tubing 5. hot-rolled steel pipe 6. spiral steel pipe 7. hot-galvanized steel pipeWe can offer ...