carbon steel flanges Size:1/2"---36" Type: plate, ... 1/2" to 24", larger sizes upon request.3) Material: stainless steel 304, 304L, 316, 316L4) Pressure: ANSI 150LBS, ANSI ... per customers' requestsSlip-On and Threaded Flange (Forged flange,stainless steel flange): SO flange.Certification: API 6D, API 607, ... -5690 1998Fax: +86-577-8689 9568 Slip On Welding Flange (Forged flange,stainless steel flange)