... tube, 2. Production based on DIN2391, EN10305-1, EN10305-3 , 3. High precision on the tolerance of tube size. Packaging detail ... wooden cases.Delivery: Within 30 days.1.steel tube2. Production based on DIN2391, EN10305-1, EN10305-3.3. High precision on the tolerance ... bundled, and reinforced wooden case packing for sea transportation.EN10204/3.1 mill test certificate is sent together with goods. EN ...