Stainless steel Coupling or socket O.D. machined from casting , we can also produce coupling or socket O.D. without machined. Other information as follows: 1)Diameter scope: DN6-DN100, 1/8"-4" 2)Type of thread: BSP,BSPT, DIN, NPT,PT, JIS, 3)Material: S/S 304/304L, 316/316L 4)Applications: Construction, real estate, pharmacy, beer, food, petroleum, dairy beverage, cosmetics 5)Packing: In plastic bags then cartons then on steel pallets or as per customers' requirements 6)Delivery time: 25-45days 7)Minimum Order Quantity: 50 pcs 8)We promise: High quality, competitive price