{"id":17194,"date":"2025-10-07T10:46:28","date_gmt":"2025-10-07T03:46:28","guid":{"rendered":"https:\/\/valvecongnghiep.com\/mat-bich-thep-ansi-class-125\/"},"modified":"2025-10-07T10:46:28","modified_gmt":"2025-10-07T03:46:28","slug":"steel-flange-ansi-class-125","status":"publish","type":"product","link":"https:\/\/valvecongnghiep.com\/en\/product\/steel-flange-ansi-class-125\/","title":{"rendered":"Steel flange ANSI Class 125"},"content":{"rendered":"

ANSI\/ASME Class 125 steel flange<\/strong> is a type of flange manufactured according to American standards. Flanges according to B16.1 Class 125 standard are widely used in the production and installation of fire valves according to American standards.<\/p>\n

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ANSI Class 125 Steel Flange Dimensions Chart<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Size<\/th>\nFlange dimension (mm)<\/th>\nBolting<\/th>\n<\/tr>\n
D<\/th>\nC (min)<\/th>\nD1 (PCD)<\/th>\nD. of bolt hole<\/th>\nBolt no.<\/th>\nBolt size<\/th>\n<\/tr>\n<\/thead>\n
2″ \/ DN50 \/ 60.3mm<\/td>\n152<\/td>\n16.0<\/td>\n120.7<\/td>\n3\/4″<\/td>\n4<\/td>\n5\/8″<\/td>\n<\/tr>\n
2-1\/2″ \/ DN65 \/ 73.0mm<\/td>\n178<\/td>\n17.5<\/td>\n139.7<\/td>\n3\/4″<\/td>\n4<\/td>\n5\/8″<\/td>\n<\/tr>\n
3″ \/ DN80 \/ 88.9mm<\/td>\n191<\/td>\n19.1<\/td>\n152.4<\/td>\n3\/4″<\/td>\n4<\/td>\n5\/8″<\/td>\n<\/tr>\n
4″ \/ DN100 \/ 114.3mm<\/td>\n229<\/td>\n19.1<\/td>\n190.5<\/td>\n3\/4″<\/td>\n8<\/td>\n5\/8″<\/td>\n<\/tr>\n
5″ \/ DN125 \/ 141.3mm<\/td>\n254<\/td>\n19.1<\/td>\n215.9<\/td>\n7\/8″<\/td>\n8<\/td>\n3\/4″<\/td>\n<\/tr>\n
6″ \/ DN150 \/ 168.3mm<\/td>\n279<\/td>\n19.1<\/td>\n241.3<\/td>\n7\/8″<\/td>\n8<\/td>\n3\/4″<\/td>\n<\/tr>\n
8″ \/ DN200 \/ 219.1mm<\/td>\n343<\/td>\n22.2<\/td>\n298.5<\/td>\n7\/8″<\/td>\n8<\/td>\n3\/4″<\/td>\n<\/tr>\n
10″ \/ DN250 \/ 273.0mm<\/td>\n406<\/td>\n23.8<\/td>\n362<\/td>\n1″<\/td>\n12<\/td>\n7\/8″<\/td>\n<\/tr>\n
12″ \/ DN300 \/ 323.8mm<\/td>\n483<\/td>\n25.4<\/td>\n431.8<\/td>\n1″<\/td>\n12<\/td>\n7\/8″<\/td>\n<\/tr>\n
14″ \/ DN350 \/ 355.6mm<\/td>\n533<\/td>\n25.4<\/td>\n476.3<\/td>\n1-1\/8″<\/td>\n12<\/td>\n1″<\/td>\n<\/tr>\n
16″ \/ DN400 \/ 406.4mm<\/td>\n597<\/td>\n25.4<\/td>\n539.8<\/td>\n1-1\/8″<\/td>\n16<\/td>\n1″<\/td>\n<\/tr>\n
18″ \/ DN450 \/ 457mm<\/td>\n635<\/td>\n25.4<\/td>\n577.9<\/td>\n1-1\/4″<\/td>\n16<\/td>\n1-1\/8″<\/td>\n<\/tr>\n
20″ \/ DN500 \/ 508mm<\/td>\n699<\/td>\n28.6<\/td>\n635<\/td>\n1-1\/4″<\/td>\n20<\/td>\n1-1\/8″<\/td>\n<\/tr>\n
24″ \/ DN600 \/ 610mm<\/td>\n813<\/td>\n30.1<\/td>\n749.3<\/td>\n1-3\/8″<\/td>\n20<\/td>\n1-1\/4″<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note:<\/strong>
\n1. For flange diameter, it is according to table I-9 of ASME B16.1 and multiplied by 25.4 to get SI units.
\n2. For flange thickness, it is according to AWWA C515, not as ASME B16.1.
\n3. For flange, it is flat and finished according to MSS SP-6.<\/p>\n

T\u1ed5ng h\u1ee3p c\u00e1c m\u1eabu m\u1eb7t b\u00edch ti\u00eau chu\u1ea9n ANSI<\/a><\/strong> \u0111\u1ea1t chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng Ch\u00e2u \u00c2u – Xem ngay nh\u00e9 !<\/em><\/span><\/p><\/blockquote>\n

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Where to Buy ANSI Class 125 Steel Flanges in the U.S. Standard<\/strong><\/h2>\n

Tan Thanh Industrial Valve and Pipe Accessories Company<\/a><\/strong> is a reliable source specializing in the supply and distribution of ANSI Class 150 standard steel flanges. As a direct importer, we offer the most competitive prices on the market without the need for intermediaries. Our warehouse system stocks large quantities of Class 125 steel flanges, and our team provides free, fast, and dedicated support for pricing inquiries and technical consultations.<\/p>\n

Contact Information for ANSI Flange Purchases:<\/strong><\/p>\n

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TAN THANH INDUSTRIAL EQUIPMENT CO., LTD<\/div>\r\n\r\n
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No. 1 Dong Ho Street, Tan Hoa Ward, Ho Chi Minh City, Viet Nam<\/div>\r\n <\/div>\r\n\r\n
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\r\n 028 3866 5295<\/a> |\r\n 028 3971 8606<\/a> |\r\n 0913 833 245<\/a> |\r\n 0904 635 106<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n
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\r\n info@tanthanhvalves.com.vn<\/a>\r\n <\/div>\r\n <\/div>\r\n\r\n
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\r\n https:\/\/valvecongnghiep.com\/<\/span>\r\n <\/div>\r\n <\/div>\r\n\r\n
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We hope this article on ANSI Class 125 standard steel flanges<\/strong> has been helpful to you. Don’t forget to support Tan Thanh’s products! Our customer appreciation program offers the best prices for 08\/2026. Contact our hotline at 028 3866 5295 | 0904 635 106<\/strong> for assistance.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

ANSI\/ASME Class 125 steel flange is a type of flange manufactured according to American standards. Flanges according to B16.1 Class 125 standard are widely used in the production and installation of fire valves according to American standards. ANSI Class 125 Steel Flange Dimensions Chart Size Flange dimension (mm) Bolting D C (min) D1 (PCD) D. […]<\/p>\n","protected":false},"featured_media":30040,"template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[233,899],"product_tag":[],"class_list":{"0":"post-17194","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-pipe-fittings","7":"product_cat-ansi-flange","8":"pa_kieu-ket-noi-ansi-standard-flange","9":"pa_vat-lieu-cast-steel","10":"pa_xuat-xu-china","12":"first","13":"instock","14":"shipping-taxable","15":"product-type-simple"},"acf":[],"_links":{"self":[{"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/product\/17194","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/media\/30040"}],"wp:attachment":[{"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/media?parent=17194"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/product_brand?post=17194"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/product_cat?post=17194"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/valvecongnghiep.com\/en\/wp-json\/wp\/v2\/product_tag?post=17194"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}