Kunshan City Hongtai Machinery & Electric Equipment Co., Ltd. [China]

high quality, good dynanic balance,high strength and hardness

1. Circle welding with no insufficient solder, slag, air vent, etc. defects.2. Thermal refining T235.3. Undeclared chamfer 2*45°.4. Zinc-plated.5. Dynamic balance grade G2.5.6. material: 45# steel

steel wire bobbins