... /8-4inch 2, standard: DIN, JIS 3, material:304L/316L Stainless steel reducing coupling-press fitting1. material: SUS 304L/316L, and carbon ... /C way of transportation: FOB,CIF,CNF.7. anneal: all stainless steel pipe fittings are annealed in inert gases before packingIf you ... , ISO14001, and many patents, etc. We are tested by TUV. Stainless steel reducing coupling-press fitting