... ), Square Flange, Lwnrf (Ff), Thrf (Ff) Facing Method: rust preventing oil, spray paint (black, yellow), hot galvanization, cold galvanization or colored ... of pipe line; easy to seal pipe line, such as oil, petroleum, gas, chemical industry, nuclear power station, water and nuclear ... : Within 12-15 Days after receipt the payment in advance. Supply Ability: 300ton/Month Place Of Orign: China OEM: Yes