Round steel（圆钢）--Raw Mterial inspection（原材料检验）--Hot piercing（热穿孔）--Waste pipe inspection（荒管检验）--Pickling and lubrication（酸洗润滑）--Precision cold drawing（精密冷拔） --Cut off（切断）--Annealing treatment（退火处理） --Straightening （矫直）--Surface treatment（表面处理 润滑）--Precision cold rolling（精密冷轧）Process dimention inspection (过程尺寸检验）--Inside and outside surface cleaning（内外表面清洗）--Anaerobic bright Annealing（无氧光亮退火） --Mechanical testing（力学检测）--Chemical Analysis（化学分析）--Straightening（矫直）--Scale cut off（定尺切断）--Finished product inspection（成品检验）--Eddy current flaw testing（涡流探伤）--Inside and outside surface Anti-rust treatment（内外表面防锈处理）--Package（包装）--Products storage(成品入库）--- Delivery to customer（运送客户） .

We also produce various steel raw materials，and includes stainless steel plate/coil/bar/tube,as well as carbon steel, aluminum, and brass products.

Shandong Zhongtong Boda Steel Co., Ltd

2901,Building A, Zhongjian Jinxiu Plaza, Huaiyin District, Jinan City,Shandong Province,China 

Tel:+8613082733761

Email:jojo@shandongztbdsteel.com