... treatment: BK, BKS, GBK, NBK, Stress Relief, Normalizing, Spheroidize Anneal, Annealing, OD: 1/4"-12" Executive Tube Standard: JIS G3461 Carbon ... , GBK, NBK, Stress Relief, Normalizing, Spheroidize Anneal, Annealing, Bright Annealing, Normalized, Quenched and Tempered, Solution Annealing, etc; 4) Continuous stenciling as required; 5) Rust ...