API 5L Carbon Spiral Welded Steel Pipe *Certificate:ISO 9001-2000 * ... ,A335,P12,T11,P9DIN:T5,DIN17175/79,T9Q235, Q345, API K55, API L80, API N80TechniqueHot Rolled and Cold DrowingSurface treatmentTransparent oil or black ... power station and long pipeline transportation projects.CertificateISO 9001:2000 API 5L/5CT LIoydsPacking6 steel strip ,bundles ,caps ,plastic wrap ,in ...