... LWN, Orifice Flanges and Non-Standard flanges2. Material: carbon steel, stainless steel and alloy steel flange3. Standard: ANSI, JIS, BS, DIN, UNI, ... yellow varnish, black paint. Rust oil and Zn8. Inspection: in-house and the third party9. Packing: Plywooden cases, pallets ... enterprises, Dingxiang Rongxin Maching Co.,Ltd was founded in 1980 and is manufacturing forgings(:round cake,square of ...