Ronwen Flanges stands out as a top-notch manufacturer and supplier of ANSI B16.47 Series B flanges, proudly based in Cape Town, South Africa. Known for their commitment to quality and precision engineering, this company specializes in delivering high-performance flanges tailored for large-diameter piping systems. Their ANSI B16.47 Series B flanges are crafted in line with the standards set by the American National Standards Institute (ANSI) and the American Society of Mechanical Engineers (ASME), guaranteeing accuracy, durability, and reliability. Made from materials like carbon steel, stainless steel, and alloy steel, Ronwen Flanges provides products that industries such as oil and gas, petrochemical, power generation, and water treatment can rely on.
These ANSI B16.47 Series B flanges, which were previously referred to as API 605 flanges, cater to pipe sizes that range from 26 inches to 60 inches. They come in pressure classes from 75 to 900 and mainly feature weld neck and blind flange types. When compared to Series A, Series B flanges have smaller bolt circle diameters and fewer bolts, making them lighter and more cost-effective while still delivering outstanding strength and sealing performance. Their precise dimensions, resistance to corrosion, and mechanical stability make them perfect for large-scale, high-pressure piping systems.
Ronwen Flanges, a leading supplier in Cape Town, South Africa, offers an extensive selection of ANSI B16.47 Series B Flanges, including weld neck flanges, slip-on flanges, blind flanges, threaded flanges, and lap joint flanges. Designed for diverse industrial applications, our high-quality inventory and commitment to exceptional service make us a trusted choice for flange products in the region.
| Size Range | 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000 |
|---|---|
| DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| JIS | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| Main Types | Threaded / Forged / Plate /Screwed |
| Flange supporting material | Ring Joint, Gasket, Flange Bolts |
| Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Most Common Types |
|
| Production technique |
|
| Connect Type/ Flange Face Type | Ring Type Joint (RTJ), Raised Face (RF),Large Male-Female (LMF), Flat Face (FF),Small Male-Female (SMF), Lap-Joint Face (LJF), Large Tongue & Groove, Small Tongue, Groove |
| Special design | As per your drawing AS, ANSI, BS, DIN and JIS 15 NB (1/2″) to 200 NB (8″) Equal and Reducing Configurations Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange |
| Test | Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector |
| Equipment | Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc |
| Origin | Indian / West Europe / Japan / USA / Korean |
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
|
ASME B16.47 Series B Slip On Flange Class 150 LBS Dimensions
|
|||||||||
|
NPS |
A |
B |
I |
Holes |
C |
D |
F |
G |
Weight |
|
22″ |
750 |
563.6 |
35 |
20 |
46 |
80 |
610 |
641 |
72.66 |
|
26″ |
870 |
665.2 |
35 |
24 |
68.5 |
90 |
724 |
749 |
120.47 |
|
28″ |
925 |
716 |
35 |
28 |
71.5 |
95 |
781 |
800 |
136.16 |
|
30″ |
985 |
766.8 |
35 |
28 |
74.5 |
100 |
832 |
857 |
161.04 |
|
32″ |
1060 |
817.6 |
41 |
28 |
81 |
106 |
889 |
914 |
205.07 |
|
34″ |
1110 |
868.4 |
41 |
32 |
82.5 |
110 |
940 |
965 |
216.76 |
|
36″ |
1170 |
919.2 |
41 |
32 |
90.5 |
120 |
997 |
1022 |
265 |
|
38″ |
1240 |
970 |
41 |
32 |
87.4 |
120 |
1060 |
1073 |
297.15 |
|
40″ |
1290 |
1020 |
41 |
36 |
90.5 |
125 |
1111 |
1124 |
319.65 |
|
42″ |
1345 |
1071.6 |
41 |
36 |
97 |
130 |
1168 |
1194 |
363.84 |
|
44″ |
1405 |
1122.4 |
41 |
40 |
102 |
136 |
1219 |
1245 |
414.1 |
|
46″ |
1455 |
1173.2 |
41 |
40 |
103 |
144 |
1270 |
1295 |
437 |
|
48″ |
1510 |
1224 |
41 |
44 |
108 |
150 |
1327 |
1359 |
484.52 |
|
50″ |
1570 |
1274.8 |
48 |
44 |
111 |
160 |
1378 |
1410 |
521.23 |
|
52″ |
1625 |
1325.6 |
48 |
44 |
116 |
170 |
1435 |
1460 |
581.51 |
|
54″ |
1685 |
1376.4 |
48 |
44 |
121 |
178 |
1492 |
1511 |
652.63 |
|
56″ |
1745 |
1427.2 |
48 |
48 |
124 |
188 |
1540 |
1575 |
713.31 |
|
58″ |
1805 |
1478 |
48 |
129 |
195 |
1590 |
1626 |
799.81 |
|
|
60″ |
1855 |
1528.8 |
48 |
52 |
132 |
200 |
1657 |
1676 |
836.15 |
|
ASME B16.47 Series B Slip On Flange Class 300 LBS Dimensions |
|||||||||
| NPS | A | B | I | Holes | C | D | F | G | Weight |
| 22″ | 840 | 563.6 | 41 | 24 | 66.5 | 100 | 640 | 641 | 159 |
| 26″ | 970 | 665.2 | 44 | 28 | 79.5 | 130 | 720 | 749 | 238.15 |
| 28″ | 1035 | 716 | 44 | 28 | 85.5 | 147 | 775 | 800 | 295.5 |
| 30″ | 1090 | 766.8 | 48 | 28 | 92 | 160 | 825 | 857 | 338.8 |
| 32″ | 1150 | 817.6 | 51 | 28 | 98.5 | 170 | 880 | 914 | 395.57 |
| 34″ | 1205 | 868.4 | 51 | 28 | 102 | 180 | 935 | 965 | 446.43 |
| 36″ | 1270 | 919.2 | 54 | 32 | 105 | 190 | 990 | 1022 | 502.9 |
| 38″ | 1170 | 970 | 41 | 32 | 108 | 140 | 995 | 1029 | 256.33 |
| 40″ | 1240 | 1020 | 44 | 32 | 114 | 150 | 1050 | 1086 | 316.78 |
| 42″ | 1290 | 1071.6 | 44 | 32 | 119 | 156 | 1100 | 1137 | 343.98 |
| 44″ | 1355 | 1122.4 | 48 | 32 | 124 | 160 | 1150 | 1194 | 394.78 |
| 46″ | 1415 | 1173.2 | 51 | 28 | 129 | 170 | 1205 | 1245 | 455.19 |
| 48″ | 1465 | 1224 | 51 | 32 | 133 | 180 | 1255 | 1314 | 482.1 |
| 50″ | 1530 | 1274.8 | 54 | 32 | 140 | 190 | 1305 | 1359 | 557.35 |
| 52″ | 1580 | 1325.6 | 54 | 32 | 144 | 198 | 1355 | 1410 | 595.56 |
| 54″ | 1660 | 1376.4 | 60 | 28 | 152 | 210 | 1410 | 1467 | 741.05 |
| 56″ | 1710 | 1427.2 | 60 | 28 | 154 | 220 | 1465 | 1518 | 786.03 |
| 58″ | 1760 | 1478 | 60 | 32 | 159 | 228 | 1515 | 1575 | 824.35 |
| 60″ | 1810 | 1528.8 | 60 | 32 | 164 | 235 | 1585 | 1620 | 904.14 |
You’ll find ANSI B16.47 Series B flanges widely utilized in industries that need large-diameter connections for high-pressure and high-temperature operations. They’re commonly found in oil and gas pipelines, refineries, chemical plants, power stations, and water distribution systems. Thanks to their sturdy construction and dependable sealing capabilities, they’re ideal for both onshore and offshore installations. Ronwen Flanges offers ANSI B16.47 Series B flanges that blend strength, precision, and performance, ensuring safe, long-lasting, and efficient operation of critical piping networks throughout South Africa and beyond.
Yes, we offer custom sizes for ANSI B16.47 Series B Flanges to meet specific project needs. Our team at Ronwen Flanges is committed to providing tailored solutions for all your requirements. For more details, contact us at sales@ronwenflanges.co.za.
We are renowned for delivering products with precise, accurate dimensions. Each product undergoes thorough testing, both destructive and non-destructive, to ensure quality before being shipped to our customers.
Our team is ready to assist you. Contact us for any queries or personalized solutions.
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