... Specification:15mm*15mm-600mm*600mmAlloy Or Not: Non-alloy Certification: ISO9001-2000 Produc t nameBlack annealed cold rolled steel pipe Wall Thickness0 ... : BS 1387, BS 1139, BS EN10025, BS EN 39,etcMaterialQ195,Q,215Q235,Q235B,.Q234BPlace of originTianjin,ChinaQuality gradeFirst gradeLength4m-12mMOQ20MetricTonDeliver Time15 ...