1.low pressure union 2.material is AISIA105 3.including Fig100,200 and so on Union are forged using high-quality steel,owing good sealability. Used for cementing truck, fracturing truck, pipe manifold, pipeline and other high-pressure service,and it is the importance fittings to transfer oil, water, fracturing fluid and fluid mixtures.H.S CODE:73079200 Fig 200 low pressure union