This is similar to the slip-on Flange in outline, but the bore is threaded, thus enabling assembly without welding. This obviously limits its application to relatively low pressure piping systems. The Flange may be welded around the joint after assembly, but this is not considered a satisfactory method of increasing its use in pressure applications. DIMENSION SPECIFICATIONS AS PER THE INTERNATIONAL STANDARD ASTM, ASME, API, AISI, BS, ANSI, DIN, JIS, MSSP, NACE SIZE : 1/8" to 48" (As Per Customer Requirement) CLASS : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS DIN Standard ND-6, 10, 16, 25, 40 Etc MATERIAL GRADE : Stainless Steel Screwed Flange : ASTM A 182, A 240?Grade: F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L Duplex stainless steel Screwed Flange : UNS S31803, 2205, Super Duplex stainless steel UNS S32750 Carbon Steel Screwed Flange : ASTM A 105, ASTM A 181 Alloy Steel Screwed Flange : ASTM A 182, GR F1, F11, F22, F5, F9, F91 Nickel Alloys Screwed Flange : Monel 400 & 500, Inconel 600 & 625, Incolloy 800, 825, Hastelloy C22, C276 Copper Alloys Screwed Flange : ASTM / ASME SB 61 / 62 / 151 / 152 C 70600 (CU -NI- 90/10) C 71500 (CU -NI- 70/30) UNS NO. C 92200, UNS NO. C 83600,UNS NO C 10100 C 10200, C 10300, C 10800, C 12000, C 12200 VALUE ADDED SERVICES : Hot Dip Galvanizing Test Certificate As Per EN 10204 - 3.1 & 3.2