We are offering lap joint flange. 1) standards: ansi b16.5 asa api-605 awwa c-207 mss sp.44, din252725732576250225032632263326342635263626372638, bs3293104504, jis-b2220, ks-b1503 etc.2. Available products including: welding neck flange, thread(screw) flange, slip-on flange, lap joint flange, blind flange, socket welding flange etc. 3. Materials: carbon steel, stainless steel, alloy steel.