Description
Stainless Steel Female Hose Barbs – Manufacturer & Exporter from India
Stainless Steel Female Hose Barbs from Stainless Steel Fittings India are precision-machined hose-to-pipe transition fittings with a female-threaded socket (NPT, BSP, BSPT, NPSM, UNEF, or Metric) and a barbed shank for secure hose retention. Manufactured from SS 304, SS 316, SS 316L, and SS 316Ti bar stock in grades meeting ASTM A276/A479. Available in sizes 1/8” to 2” NPS with hose IDs from 3 mm to 51 mm. Price: US$ 12.40/kg for SS 316 Female Hose Barbs ex-works India.
Product Overview
What Is a Stainless Steel Female Hose Barb?
A female hose barb (also called female barbed hose nipple, hose tail, or female pipe-to-hose adapter) is a fitting with two zones: a female-threaded socket connecting to a male-threaded port, and a barbed shank with tapered raised rings gripping the hose ID. As internal pressure increases, hose walls compress further onto the barbs creating a self-energizing seal. SS female hose barbs are fully reusable in low-pressure service.
Thread Types: NPT, BSP, BSPT, NPSM, UNEF & Metric
NPT (ASME B1.20.1) — US standard tapered thread sealing through interference. Used in North America, Middle East, and Asia. BSP / BSPP (ISO 228-1) — 55° parallel thread, seals via bonded seal washer or O-ring face. Dominant in UK, Europe, India, Australia. BSPT (ISO 7-1) — British tapered thread, seals like NPT. Used in UK, Europe, Asia-Pacific. NPSM (ASME B1.20.1) — straight mechanical thread for union-nut connections in instrument applications. UNEF (ASME B1.1) — Unified extra-fine thread for precision instruments and thin-wall fittings. Metric ISO (ISO 261) — M10 to M26 internal threads for European OEM equipment. All threads verified 100% with calibrated go/no-go gauges.
Material Grades for Stainless Steel Female Hose Barbs
SS 304 (UNS S30400 / EN 1.4301): 18% Cr, 8% Ni. Standard for water, food processing, compressed air, and general-purpose fluid lines. ASTM A276/A479 compliant. SS 316 (UNS S31600 / EN 1.4401): 2–3% Mo addition (PREN 24–26) for superior chloride pitting resistance. Specification choice for seawater, saline solutions, coastal marine service, and chemical process lines. SS 316L (UNS S31603 / EN 1.4404): Low-carbon (max 0.03% C) variant. Specified where fittings will be welded — prevents sensitization in HAZ. SS 316Ti (UNS S31635 / EN 1.4571): Titanium-stabilized for high-temperature service (400–800°C) in steam, hot water, and thermal oil circuits. SS 316L Electropolished: Ra ≤ 0.4 μm for pharmaceutical WFI, biotech, and food-grade circuits per ASME BPE. All grades shipped with EN 10204 3.1 Material Test Reports.
Barb Geometry and Pressure Performance
Single barb (up to 6 bar, PVC/silicone hose), double barb (6–25 bar, reinforced rubber/PU hose with clamp), and multi-barb configurations (medium-pressure braided hose) are available. Barb OD is 10–15% oversize versus nominal hose ID. With PTFE-lined braided hose + crimp ferrule: rated to 200 bar. Temperature range: −196°C to +550°C (fitting body, grade-dependent).
Surface Finish Options
Standard: bright machined + passivated per ASTM A967 (nitric or citric acid). Optional: electropolished (Ra ≤ 0.4 μm, ASME BPE pharmaceutical), bead blasted (matte industrial finish), mirror polished (Ra ≤ 0.2 μm, semiconductor/analytical), phosphoric acid passivation for FDA 21 CFR food contact.
Technical Specifications
| Parameter | Details |
| Product | Stainless Steel Female Hose Barbs |
| Thread Standards | NPT (ASME B1.20.1), BSP/BSPP (ISO 228-1), BSPT (ISO 7-1), NPSM (ASME B1.20.1), UNEF (ASME B1.1), Metric ISO (ISO 261) |
| Thread Size Range | 1/8” to 2” NPS (NPT/BSP); M10 to M26 (Metric) |
| Hose Barb ID Range | 3 mm (1/8”) to 51 mm (2”) |
| Barb Configuration | Single barb, Double barb, Multi-barb |
| Material Grades | SS 304, 304L, 316, 316L, 316Ti, 317L, 321 |
| Material Standard | ASTM A276, ASTM A479, EN 10088-3 |
| Pressure Rating | Up to 200 bar (PTFE braided + crimp); up to 25 bar (rubber braided + clamp) |
| Temperature Range | −196°C to +550°C (fitting body) |
| Surface Finish | Passivated (ASTM A967), Electropolished (Ra ≤ 0.4 μm), Mirror, Bead Blasted |
| Certifications | ISO 9001:2015, EN 10204 3.1/3.2, NABL, FDA 21 CFR |
| HS Code | 73079990 |
| Price (SS 316) | US$ 12.40 / kg ex-works India |
Thread Standard Comparison
| Thread | Standard | Profile | Seal Method | Markets |
| NPT | ASME B1.20.1 | Taper (1/16”/ft) | Thread interference + PTFE/sealant | USA, Canada, Middle East, Asia |
| BSP (BSPP) | ISO 228-1 / BS 2779 | Parallel (55° Whitworth) | Bonded seal washer / O-ring face | UK, Europe, India, Australia |
| BSPT | ISO 7-1 / BS 21 | Taper (55°) | Thread interference + PTFE/sealant | UK, Europe, Asia-Pacific, China |
| NPSM | ASME B1.20.1 | Straight mechanical | Coupling nut / O-ring | USA, instrumentation |
| UNEF | ASME B1.1 | Straight (extra fine) | O-ring / bonded seal | USA, precision instruments |
| Metric ISO | ISO 261 / DIN 13 | Straight (60° V) | Bonded seal / O-ring | Europe, Germany, Japan |
Material Grade International Equivalents
| Grade | UNS | EN / DIN | BS | JIS | GOST |
| SS 304 | S30400 | 1.4301 | 304S31 | SUS304 | 08Kh18N10 |
| SS 304L | S30403 | 1.4307 | 304S11 | SUS304L | 03Kh18N11 |
| SS 316 | S31600 | 1.4401 | 316S31 | SUS316 | 10Kh17N13M2 |
| SS 316L | S31603 | 1.4404 | 316S11 | SUS316L | 03Kh17N14M3 |
| SS 316Ti | S31635 | 1.4571 | 320S31 | SUS316Ti | 08Kh17N13M2T |
Product Variants Available
| Variant | Thread End | Barb ID | Application |
| Female NPT × Single Barb | NPT (ASME B1.20.1) | 3–38 mm | Water, air, general fluids – North America, Middle East |
| Female BSP × Single Barb | BSPP (ISO 228-1) | 3–51 mm | Plumbing, pneumatic, cooling – UK, Europe, India |
| Female BSPT × Double Barb | BSPT (ISO 7-1) | 6–38 mm | Hydraulic return, steam tracing – UK, Asia-Pacific |
| Female NPSM × Single Barb | NPSM (ASME B1.20.1) | 3–25 mm | Instrument hose connections, analytical equipment |
| Female UNEF × Single Barb | UNEF (ASME B1.1) | 3–19 mm | Precision instruments, thin-wall fittings |
| Female Metric × Single Barb | ISO Metric M10–M26 | 4–25 mm | European OEM equipment |
| Female NPT × Multi-Barb | NPT (ASME B1.20.1) | 6–51 mm | Chemical dosing, marine cooling |
Applications by Industry
| Industry | Application |
| Oil & Gas | Chemical injection hose connections, instrument air lines, sample hose fittings |
| Marine & Offshore | Seawater cooling hose connections, bilge system hose barbs, deck service lines |
| Food & Beverage | CIP/SIP hose connections, product transfer hose barbs, CO₂ and nitrogen gas lines |
| Pharmaceutical | WFI hose connections, bioreactor transfer hose barbs, aseptic process hose tails |
| Chemical Processing | Acid/alkali chemical dosing hose, solvent transfer, reagent lines |
| Power Generation | Cooling water hose connections, lube oil hose barbs, hydrogen seal oil systems |
| Electrical / OEM | Transformer cooling oil hose barbs, battery cooling circuit hose tails |
| Semiconductor | Ultra-pure DI water hose connections, process chemical hose barbs (EP finish) |
Quality Standards and Certifications
| Standard / Certificate | Scope |
| ISO 9001:2015 | Quality Management System |
| ASTM A276 / A479 | SS bar material for machined fittings |
| EN 10204 3.1 / 3.2 | Material Test Report with NABL / TPI witness |
| ASME B1.20.1 | NPT / NPSM thread gauging |
| ISO 228-1 / ISO 7-1 | BSP / BSPT thread gauging |
| ASTM A967 | Passivation specification for SS |
| FDA 21 CFR 177 | Food contact material compliance |
| ASME BPE | Bio-processing surface finish (electropolished) |
Key Features
- All female thread forms: NPT, BSP (BSPP), BSPT, NPSM, UNEF, Metric ISO
- Grades SS 304, 304L, 316, 316L, 316Ti — full EN 10204 3.1 material traceability
- 100% thread gauge inspection per ASME B1.20.1 / ISO 228-1 / ISO 7-1
- Single, double, and multi-barb profiles for low-to-medium pressure service
- Passivated per ASTM A967; electropolished (Ra ≤ 0.4 μm) for hygienic service
- Hose ID range: 3 mm to 51 mm; Thread: 1/8” to 2” NPS
- Compatible with PVC, silicone, EPDM, PU, PTFE-lined, rubber braided hoses
- Price: US$ 12.40/kg for SS 316 ex-works India
Why Choose Stainless Steel Fittings India?
- ISO 9001:2015 certified; 30+ years of precision-machined SS fittings
- All female thread standards in one facility: NPT, BSP, BSPT, NPSM, UNEF, Metric
- All SS grades — 304, 304L, 316, 316L, 316Ti — with EN 10204 3.1 MTR as standard
- SS 316 Female Hose Barbs at US$ 12.40/kg ex-works India
- NABL-accredited mechanical and chemical testing; SGS/BV TPI on request
- Electropolished variants for pharmaceutical, biotech, food-grade (ASME BPE compliant)
- Export to USA, UAE, UK, Germany, Singapore, Australia & 40+ countries worldwide
Frequently Asked Questions
Q1: What is a stainless steel female hose barb?
A stainless steel female hose barb is a fitting with a female-threaded socket (NPT, BSP, BSPT, NPSM, UNEF, or Metric) on one end and a barbed shank on the other. The threaded end connects to a male-threaded pipe or valve port; the barb end grips the inside of a flexible hose. Also known as female barbed hose nipples, female hose tails, or female pipe-to-hose adapters.
Q2: What is the difference between NPT and BSP threads?
NPT (ASME B1.20.1) is a tapered thread sealing through interference, standard in North America and Middle East. BSP (ISO 228-1) is a 55° parallel thread dominant in UK, Europe, India, and Australia, sealing via a bonded seal washer or O-ring. BSPT (ISO 7-1) is the tapered British version, sealing like NPT. Always confirm which standard the equipment port uses before ordering.
Q3: Which SS grade is best for seawater service?
SS 316 or 316L is the minimum specification for direct seawater contact. The 2–3% molybdenum (PREN 24–26) provides resistance to chloride pitting up to 35–40°C. For elevated-temperature seawater or splash-zone service, Super Duplex 2507 (PREN 42+) is recommended.
Q4: What is NPSM thread and where is it used?
NPSM (National Pipe Straight Mechanical) per ASME B1.20.1 is a straight (non-tapered) thread where a union nut or coupling nut completes the connection. Common in analytical instrument fittings and applications requiring regular disassembly. Sealing is by O-ring or bonded seal, not by thread interference.
Q5: What is the price of SS 316 female hose barbs?
SS 316 Female Hose Barbs are priced at US$ 12.40/kg ex-works India. Final pricing varies by thread type, barb size, surface finish, quantity, and certification. SS 304 variants are 15–20% lower. Contact our sales team for a formal quotation within 24 hours.
Q6: Can you supply UNEF thread female hose barbs?
Yes. UNEF (Unified National Extra Fine) threads per ASME B1.1 are available for precision instrument tubing connections, scientific equipment, and analytical flow cells. All UNEF threads are verified 100% with calibrated go/no-go gauges per ASME B1.1 tolerances.
Q7: Do you supply electropolished SS 316L female hose barbs for pharmaceutical use?
Yes. Electropolished SS 316L female hose barbs with bore Ra ≤ 0.4 μm per ASME BPE are available with passivation per ASTM A967, FDA 21 CFR 177 material compliance, and EN 10204 3.1 MTR for pharmaceutical WFI/PW loops and bioreactor hose connections.
Q8: What hose clamp is recommended with SS female hose barbs?
Up to 6 bar: worm-drive hose clamps (SS 316). 6–25 bar: heavy-duty ear clamps (Oetiker) or two-bolt bridge clamps in SS 316. Above 25 bar with braided hose: crimp ferrules (SS 316 crimp sleeves). We also supply matching SS crimp ferrules — see our Stainless Steel Hose Crimp Ferrules range.
Q9: What is the minimum order quantity?
MOQ for standard sizes (1/4” NPT × 6 mm barb, 1/2” BSP × 12 mm barb) in SS 316: 50 pieces. Non-standard thread/barb combinations: 200–500 pieces. Large export orders (5,000+ pieces): volume pricing available.
Q10: What documentation is supplied with SS female hose barbs?
Standard: EN 10204 3.1 MTR (NABL-accredited lab), thread inspection certificate (go/no-go gauge per ASME B1.20.1/ISO 228-1), passivation certificate (ASTM A967), dimensional inspection report, and packing list. For pharmaceutical: FDA 21 CFR 177 letter and ASME BPE surface finish certificate. For offshore: PMI (XRF) per IOGP S-562 and EN 10204 3.2 with TPI witness.
Related Products – Stainless Steel Hose Barbs & Fittings
- Stainless Steel Male Hose Barbs
- Stainless Steel Hose Couplings & Hose Connectors
- Stainless Steel Hose Connectors
- Stainless Steel Hydraulic Hose Fittings
- Stainless Steel Hose Crimp Ferrules
Request a Quote
Stainless Steel Fittings India is a leading manufacturer and exporter of SS female hose barbs in NPT, BSP, BSPT, NPSM, UNEF, and metric thread forms. SS 316 Female Hose Barbs: US$ 12.40/kg ex-works India. Our technical team provides prompt quotations with full material traceability, hose compatibility guidance, and thread selection support.
📧 Email: info@stainlesssteel-fittings-india.com | Supplying to USA, UAE, UK, Germany, Singapore, Australia & 40+ countries worldwide.
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