ASME B16.5 6" *CL300lb Forged Carbon Steel Blind Flange Products Size Thk. Rating End/Type Material Std. Dimension Std. Qty Margin U. Weight WN Flange DN65 3.5MM PN16 RF ASTM A105 DIN 2633 20 Pcs 3.03 WN Flange DN100 3.7MM PN16 RF ASTM A105 DIN 2633 20 Pcs 4.54 SO Flange 6" 150# RF ASTM A181 Gr.70 ASME B16.5 10 Pcs 7.45 BL Flange 6" 300# RF ASTM A181 Gr.70 3000 4 Pcs 20.9 Introduction of Gee Company： Hebei Haihao High Pressure Flange &Pipe Fitting Group Gee pipe Mill Co.,Ltd. Status Manufacturer from 1982 year with 660 workers Trade mark Brand： GEE Certificate ABS ，ISO9001：2008 ,API 6H ,CE Manufacture License of China Pressure vessels. Lab Laboratory of CNAS Mainly Products： Steel Flange Steel Elbow Steel Tee Steel Reducer Gasket bolt&nut Progress： Forged and Hot rolled Size： 1/2“--58” Carbon steel& Stainless Steel &Alloy steel& Duplex Stainless Standard Mark： GEE/ OD WT /Pressure / Standard / Material /Heat number MOQ: 1 piece OEM & Drawing： Accept Sample cost we don't offer free samples，but will reimburse the buyer once an order is confirmed. GEE Advantage: For Project :we have the best Quality For Wholesaler: we have the best price and OEM . For Retailer : we have the different Package style .