ANSI / ASME B16.5 Backing Ring Flanges Manufacturer, Supplier & Exporter
ANSI / ASME B16.5 Backing Ring Flanges Manufacturer, Supplier & Exporter – Taurus Piping Solution is a trusted manufacturer, supplier, and exporter of high-quality
Backing Ring Flanges compliant with ASME B16.5 and ASME B16.47 standards.
We offer a comprehensive range including carbon steel, stainless steel, duplex, galvanized, split,
loose, PN10/PN16 backing flanges, and DI backup flanges.
Our advanced manufacturing facility ensures precision, reliability, and globally accepted quality.
These flanges are widely used with stub-ends, angle face rings, and piping joints
where rotational alignment and ease of installation are essential.
Taurus Piping Solution ensures every flange meets international dimensional and manufacturing standards,
with strict QA/QC and on-time delivery.
Backing Ring Flange Features & Applications
- Available in plain, machine-welded, split, and gasket-type ring flanges
- Used with stub-ends for free rotation during alignment
- Suitable for waterworks, oil & gas, chemical, refining, and industrial pipelines
- Offered in a wide range of pressure ratings and materials
Specifications
| Specification Item | Details |
|---|---|
| Flange Size | ½” (15 NB) to 48″ (1200 NB) |
| Flange Class | 150#, 300#, 600#, 900#, 1500#, 2500#, DIN ND-6/10/16/25/40 |
| DIN Standards | DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627–2638, DIN2673 |
| BS Standards | BS4504, BS1560, BS10 |
| Design Standards | ANSI B16.5, ANSI B16.47 Series A & B, ANSI B16.48, EN1092, UNI 2277/2278, JIS, SABS1123, GOST |
| Face Types | FF, RF, RTJ, Large/Small Male-Female, Large/Small Tongue & Groove |
| Connection Types | Ring Joint, Lap Joint, Raised Face, Flat Face |
| Coatings | Anti-rust, Oil black paint, Zinc plating, Yellow transparent, Hot/Cold dip galvanizing |
| Production Method | Forged, Heat-treated, Precision machined |
| Test Certificates | EN 10204/3.1, Radiography Report, Third-Party Inspection |
| Testing | Spectro, Hydrotest, X-ray, UT, MPI |
| Origin | India / West Europe / Japan / USA / Korea |
ANSI 150# Backing Ring Flange Dimensions
| Pipe OD | K | D | A | T | S | No. of Holes | Bolt Size |
|---|---|---|---|---|---|---|---|
| 20 | 60.5 | 90 | 32 | 6 | 16 | 4 | 1/2″ |
| 25 | 70 | 98 | 37 | 8 | 16 | 4 | 1/2″ |
| 32 | 79.5 | 108 | 44 | 8 | 16 | 4 | 1/2″ |
| 40 | 89 | 117 | 52 | 8 | 16 | 4 | 1/2″ |
| 50 | 98.5 | 127 | 62 | 10 | 16 | 4 | 1/2″ |
| 63 | 120.5 | 152 | 78 | 10 | 20 | 4 | 5/8″ |
| 75 | 139.5 | 178 | 92 | 10 | 20 | 4 | 5/8″ |
| 90 | 152 | 191 | 108 | 12 | 20 | 4 | 5/8″ |
| 110 | 190.5 | 229 | 128 | 12 | 20 | 8 | 5/8″ |
| 125 | 216 | 254 | 140 | 16 | 23 | 8 | 3/4″ |
| 140 | 216 | 254 | 158 | 16 | 23 | 8 | 3/4″ |
| 160 | 241 | 279 | 178 | 16 | 23 | 8 | 3/4″ |
| 180 | 241 | 279 | 195 | 16 | 23 | 8 | 3/4″ |
| 200 | 298.5 | 343 | 235 | 20 | 23 | 8 | 3/4″ |
| 225 | 298.5 | 343 | 240 | 20 | 23 | 8 | 3/4″ |
| 250 | 362 | 406 | 290 | 20 | 26 | 12 | 7/8″ |
| 280 | 362 | 406 | 300 | 20 | 26 | 12 | 7/8″ |
| 315 | 432 | 483 | 345 | 25 | 26 | 12 | 7/8″ |
| 355 | 476 | 535 | 376 | 28 | 29 | 12 | 1″ |
| 400 | 540 | 600 | 430 | 32 | 29 | 16 | 1″ |
| 450 | 578 | 635 | 480 | 36 | 32 | 16 | 1 1/8″ |
| 500 | 635 | 700 | 533 | 40 | 32 | 20 | 1 1/8″ |
| 560 | 692 | 750 | 590 | 46 | 35 | 20 | 1 1/4″ |
| 630 | 749 | 813 | 660 | 50 | 35 | 20 | 1 1/4″ |
| 710 | 863.5 | 927 | 745 | 71 | 35 | 28 | 1 1/4″ |
| 800 | 978 | 1060 | 835 | 81 | 41 | 28 | 1 1/2″ |
| 900 | 1085.8 | 1170 | 950 | 90 | 41 | 32 | 1 1/2″ |
| 1000 | 1200.2 | 1290 | 1030 | 90 | 41 | 36 | 1 1/2″ |
| 1200 | 1422.5 | 1510 | 1235 | 108 | 41 | 44 | 1 1/2″ |
| 1400 | 1651 | 1745 | 1460 | 125 | 48 | 48 | 1 3/4″ |
Materials
| Material Category | Grades |
|---|---|
| Carbon Steel | ASTM A105, ASTM A350 LF1/LF2/LF3, ASTM A694 F42–F65 |
| Alloy Steel | ASTM A182 F5, F9, F11, F22, F91 |
| Stainless Steel | 304, 304L, 316, 316L, 316Ti, 309, 310, 317, 321, 347, 904L |
| Duplex | 2205 (UNS S31803 / S32205) |
| Super Duplex | S32750, S32760 |
| Nickel Alloys | Nickel 200/201, Inconel 600/625, Incoloy 800/825, Monel 400/K400, Hastelloy C276 |
Coatings & Surface Treatments
| Coating Type | Description |
|---|---|
| Anti-Rust Paint | Standard corrosion barrier |
| Oil Black Paint | Moisture-resistant black oxide |
| Zinc Plated | Electro-galvanized finish |
| Yellow Transparent | Clear uniform protective film |
| Hot-Dip Galvanized | Heavy-duty corrosion protection |
| Cold Galvanized | Zinc-rich coating |
| Epoxy / FBE Coating | Fusion bonded epoxy chemical resistance |
| Sandblasting | Surface cleaning & coating preparation |
| Electro-Polishing | Enhanced stainless steel finish |
Manufacturing Process
The manufacturing process includes:
- Raw material selection & testing
- Forging / rolling
- Heat treatment
- CNC machining & drilling
- Surface finishing & coating
- NDT testing (UT, X-ray, MPI)
- Final inspection & stamping
- Packing & dispatch
Application Industries
- Oil & Gas
- Refineries
- Petrochemicals
- Power Generation
- Chemical Processing
- Pulp & Paper
- Food & Dairy
- Pharmaceuticals
- Water Treatment & Desalination
- Heat Exchangers & Condensers
- Offshore Drilling
Inspection & Testing
| Test Type | Description |
|---|---|
| Visual Inspection | Detects cracks & surface defects |
| Dimensional Inspection | Confirms ASME B16.5/B16.47 requirements |
| Tensile Test | Evaluates yield & tensile strength |
| Hardness Test | Material hardness verification |
| Hydrostatic Test | Leakage & pressure integrity check |
| Ultrasonic Testing (UT) | Internal defect detection |
| X-Ray (RT) | Subsurface flaw detection |
| Magnetic Particle Test | Surface crack detection |
| Spectro Analysis | Chemical composition validation |
Packing & Forwarding
To ensure damage-free delivery, flanges are packed in:
- Plywood boxes / pallets (non-fumigation)
- Steel pallets / cages
- Moisture-resistant wrapping
- Individual tagging with size, class, heat number
Export Countries
| Region | Countries |
|---|---|
| Middle East | Saudi Arabia, UAE, Iran, Iraq, Jordan, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Cyprus |
| Asia | Malaysia, India, Singapore, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Bangladesh |
| South America | Brazil, Venezuela, Argentina, Chile, Colombia, Ecuador |
| Africa | South Africa, Nigeria, Algeria, Libya, Egypt |
| North America | USA, Canada, Mexico |
| Europe | UK, Germany, France, Italy, Netherlands, Spain, Norway, Russia, Belgium |
Taurus Piping Solution supplies Backing Ring Flanges worldwide with assured quality, competitive pricing, and on-time shipment.
Also Read: Industrial Backing Ring Flange