... 5. 100% inspection. stainless steel 304,316ISO 9001:2008 Item: straight pipe union, press fittings : Item No.DN/mm (Nominal diameter ... with screw; Elbow -- equal elbow, reducing elbow, elbow with plain end, elbow with screw; Tee -- equal tee, reducing tee, tee with ... most Europe countries, Asia countries and some other countries. Standard: Press fitting standard: GB/T 19228.1-2003, DVGW W534-1995 and ...