China Flange factory This Standard covers pressure鈥搕emperature ratings, materials, dimensions, tolerances, marking, testing, and methods of designating openings for pipe flanges and flanged fittings. Included are flanges with rating class designations 150, 300, 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanges with rating class designation 2500 in sizes NPS 1/2 through NPS 12, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units flanged fittings with rating class designation 150 and 300 in sizes NPS 1/2 through NPS 24, with requirements given in both metric and U.S. Customary units with diameter of bolts and flange bolt holes expressed in inch units flanged fittings with rating class designation 400, 600, 900, and 1500 in sizes NPS 1/2 through NPS 24 and flanged fittings with rating class designation 2500 in sizes 1 / 2 through NPS 12 that are acknowledged in Nonmandatory Appendix E in which only U.S. Customary units are provided (b) This Standard is limited to flanges and flanged fittings made from cast or forged materials blind flanges and certain reducing flanges made from cast, forged, or plate materials Also included in this Standard are requirements and recommendations regarding flange bolting, gaskets, and joints. Flanges can be used with grooved cut pipes and joined to ANSI or other internationally standardized flanged pipe ends. The nuts and bolts used must also conform to the relevant standards. kindrate pipe flanges and flanged fittings are divided into United States Standard and China Standard (GB) to meet different customers' demand. pipe flanges and flanged fittings of United States Standard are larger in external size, convenient in fixing and will not interfere while joining with other couplings. Pipe fittings of China Standard are of compact dimensional design with low cost but inconvenient in installation. Users should pay attention to their differences and make sure the standard and serial number of the pipe fittings ordered. (Pipe)Max. Work. Press.Rated Work PressMax end loadNuts &BoltsNuts &Bolts StandardSealing SurfaceBolt torqueDimensionsUnit Weight (Size)(O.D)ABC INCHmmMPaMPaNpcsInchx InchDEn.mmmmmmmkg 2"60.32.82.1492145/8X23/46385.5140.51165125221.4 2-1/2"732.82.1720345/8X23/47699.2140.51175145222.0 3"88.92.82.11070045/8X31/492115.1140.51190160222.5 4"114.32.82.1176818578X31/4117140.5140.51220180233.5 6"168.32.82.13833083/4X31/2171197.65249.25285240234.5 8"2192.82.17910483/4X31/2221252.4249.25340295277.0 Flange Manufacturer Landee supplies Weld Neck Flange (WN), Long Welding Neck Flange (LWN), Lap Joint Flange (LJ), Blind Flange / Blank Flange (BL), Slip On Flange (SO), Thread Flange (THR), Socket Weld Flange (SW), Reducing Flange, Orifice Flange, Anchor Flange, Spectacle Blind Flange (Figue 8), Spacer Ring/Spade Flange etc鈥?/p> Flange Standards: ANSI/ASME Standard: ANSI B16.5, ANSI B16.47 Series A & B, MSS-SP-44, API 605, API6A in class 150 to 2500; AWWA C207 flanges in Class B, Class D, Class E, Class F, Ring, Blind & Hub; European DIN, UNI, EN 1092-1, BS 4504, ISO, NS, NFE29203 flanges in Pressure PN6 to PN100; Japanese JIS B2220 & Korean KS B1503 flanges in pressure 5K to 40K; Russian GOST 12820-80, GOST 12821-80, GOST 12815-80 in pressure PN0.6MPa to PN10MPa; South African SABS 1123 / SANS 1123 in Class 600kPa to 4000kPa. Flange Materials: Carbon Steel: ASTM A105/A105N A350 LF1, LF2 CL1/CL2, LF3 CL1/CL2 A694 F42, F46, F48, F50, F52, F56, F60, F65, F70 A516.60, 65, 70 (Spectacle Blind Flange, Spacer Ring/Spade Flange) Steel RST37.2, C22.8 Stainless Steel: ASTM A182 F304/304L, F316/316L, F316H, F316TI, F310, F321; Alloy Steel: ASTM A182 F1, F5, F9, F11, F22, F91 Duplex & Super Duplext Steel: ASTM A182 F51/UNS S31803, A182 F53/UNS S32750 ASTM A182 F55 / UNS S3260 Flange Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ) Flange Norminal Diameter Range: 1/2"鈥?96", DN15-DN2000 Normail Pressure Range: 150# - 2500# (PN6 鈥?PN40)China Flange factory website:http://www.kindratechina.com/fitting-part-for-piping-system/flange/