Stainless steel bolt 1, spec.: 12-50mm, wall: 0.8-2.0mm 2, ... ,AMSE 3, material: INOX AISI304,304L,316,316L Stainless steel bolt 1, The material can be SUS304,304L,316, or 316L ... by best material Reliability of the joints Resistance to corrosion Security of hygiene Nowadays the Zhengkang Press fitting system of cold ... government buildings, classy hospitals, star hotels water supply projects. hex bolt