1) Product Name: Seamless Pipe. 2) Standard: API Spec 5CT, API Spec 5L 3) Material: Q195, Q235, Q345, etc Seamless ... material and the specification according to customer request.Seamless pipe is a kind of strip steel with middle hollow ... Seamless steel tubes for equipment, pipelines, vessels, pipe fittingsand mechanical Structures4) Standard: API Spec 5CT, API Spec 5L5) Material: Q195, Q235, Q345, ...