Technical information about our tubes, Quality: A Quality "A": Ra 1,0 my, chemically cleaned Material: Stainless steel, AISI 316 L - Werkstoff 1.4435/1.4404 other materials on request Quality: ASTM A-269 (96)/ A-213 (95a) or DIN 17458 TC 1 (07/85) seamless, coldworked, bright annealed, straightened and deburred, rectangulary cut for ATW-welding Tolerances: ASTM A-269 (96) or DIN 1127 (03/97): D4/ T3 Hardness: Controlled HRB <= 80/ HV 180 Outer surface: DIN 17458 (07/85), bright annealed, chart 6, n2, free from visible scratches Inner surface: Ra <= 1,0 my, surface test acc. ISO 468, 4288 and DIN 4768 other surface standards possible on request Chemically cleaned acc. ASTM A-632, appendix 3, TCC " Thermo couple Clean ". Production and cleaning process free from CKW´s Tubelenghts: Randomlenghts 5.000 - 7.000 mm Works certificates: EN ISO 10204 3.1 B (08/95) 100% eddy-current tested acc. BS 3889 100 % optical surfaceinspection Packaging: Tube capped with PE-endcaps, tubes packed in PE-bags, transport in tubular containers/ wooden boxes for safe transport/ handling Certification: Production acc. ISO 9001 and QA EMAS/ ISO 14001 10/99 Subject to alteration