Supplier Manufacturer of Hastelloy B3 Steel Tube Sheet Fittings Flanges
We are Hastelloy B3 Supplier , Hastelloy B3 UNS N10665 is a part of the Hastelloy alloy family, mainly composed of nickel and molybdenum, and has excellent resistance to hydrochloric acid, sulfuric acid and other reducing agents. Nickel Alloy B3 also maintains its strength and oxidation resistance at high temperatures.
Applications of Hastelloy Alloy B3
- Chemical Processing: In environments with corrosive chemicals such as sulfuric acid, hydrochloric acid and chlorine.
- Aerospace: Components exposed to high temperatures and chemical environments.
- Power Generation: Components in heat exchangers, condensers and reactors.
- Petrochemical and Pharmaceutical: Equipment exposed to corrosive chemicals that require corrosion resistance.
| Element | Ni (Nickel) | Mo (Molybdenum) | Fe (Iron) | Cr (Chromium) | Mn (Manganese) | C (Carbon) |
| Alloy B3 (%) | Remainder (65.0 min) | 27.0 – 32.0 | 1.0 – 3.0 | 1.0 – 3.0 | 3.0 max | 0.01 max |

Hastelloy B3 Suppliers Available
- Hastelloy B3 Alloy B3 UNS N10675 Plate and Sheets
- Hastelloy B3 Pipes and Tubes
- Hastelloy B3 Bars
- Hastelloy B3 Fittings
Elbows Tees Reducers Crosses Couplings Caps Unions Nipples Bushings Plugs Outlet fittings
- Hastelloy B3 Flanges
Threaded flange (PT), welded neck flange (WN), slip on flange (SO), socket welding flange (SW), lap joint flange (LJ), blind flange (BL ).
Technical Specifications & Supply Scope
We manufacture and supply Hastelloy B3 components in strict compliance with international ASTM, ASME, and DIN standards. Our core production scope covers:
1. Hastelloy B3 Pipes & Tubes (Seamless & Welded)
Standards: ASTM B622 / ASME SB622 (Seamless), ASTM B619 / ASME SB619 (Welded), ASTM B626 (Welded Tubes)
Dimensions: 1/2" NB to 24" NB; Outer Diameter (OD) from 6.0mm up to 610mm
Wall Thickness: Schedule 5S, 10S, 40S, 80S, XXS
2. Hastelloy B3 Plates, Sheets & Coils
Standards: ASTM B333 / ASME SB333
Thickness: 0.5mm to 50mm
Width: 1000mm, 1220mm, 1500mm, 2000mm
3. Hastelloy B3 Pipe Fittings (Butt Weld & Forged)
Standards: ASTM B366 / ASME SB366 (Factory-Made Wrought Fittings), ASME B16.11 (Forged Fittings)
Configuration: 45°/90°/180° Elbows (Long Radius & Short Radius), Equal/Reducing Tees, Concentric/Eccentric Reducers, Caps, Crosses, Couplings, Nipples, Swages
Rating: Sch 10S/40S/80S for butt weld; 3000#, 6000#, 9000# for forged threaded/socket weld lines
4. Hastelloy B3 Flanges
Standards: ASME B16.5, ASME B16.47, DIN 2633
Types: Welding Neck (WN), Slip-On (SO), Blind (BL), Socket Welding (SW), Lap Joint (LJ), Threaded
Pressure Class: 150# to 2500# (PN6 to PN400)
Complete Quality Assurance & Inspection
To ensure standard compliance and defect-free delivery for critical piping operations, all shipments from our factory include:
Full material traceability via EN 10204 3.1 Mill Test Certification (MTR)
Positive Material Identification (PMI) verified testing
Non-Destructive Testing (NDT) including 100% Ultrasonic Testing (UT) and Radiographic Testing (RT) for welded pipelines
Third-Party Inspection (TPI) options via SGS, BV, or Lloyd's Register
Looking for a reliable Hastelloy B3 production partner?
Contact our technical sales engineering division today for current lead times, component pricing, and detailed material submittals.





