1)Size: 1/2"-24" 2)Material: class 300 flange 3)Standard: JIS 4)Place of Origin: Zhejiang China ( ... negotiate with us. We will reply you within 24hours. productsclass 300 flangeMaterialStainless steel (SS316, SS304, SS316L, SS304L, SS321 316Ti etc.);TypesWeld ... Factory in-house 1" JIS Flange SS WN Flange class 300 flange