... )Secondary Or Not: Non-secondaryApplication: Fluid PipeTechnique: Hot RolledCertification: APISurface Treatment: for the clients needsSpecial Pipe: API PipeAlloy Or Not: Non ... ,JIS and so onOut Diameter21.3mm—457mm (1/2”-22”)Wall Thickness2mm-70mmGrade10#,20#,45#,16Mn,27SiMn,Q235,ST42,ST52,,A106 ...