forged rings as per customer's drawing. Size: from 1/2 to ... , spray paint (black, yellow), hot galvanization, cold galvanization or colored electroplate, powder coating and so on. Varieties: threaded flange, slip-on ... collar, loose plate flange, companion flange and so on. Forged Rings ( Round rings) as per customer's drawing. Standards: KS B1502, JIS ...