... class: 150LB, 300LB, 600LB, 900LB, 1500LB, and 2500LB 3.Type: Welding neck(WN) , Slip-on(SO) , Threaded(TH) , Socket ... -welding(SW) , Blind(BL) , Orifice flange (OF),or by customers' drawings ... paint, Black paint and anti-rust oil.10. Test: Factory inspection or third party inspection11. Packing: Plastic packing with Plywood case ...