Our Class 150 NPT/BSP/BSPT castings, manufactured in 304/316 stainless steel, are leak-proof and corrosion-resistant for water supply, heating and industrial systems. With a full year-round inventory, we offer fast global delivery to the civil, construction and chemical industries with customised sizes and threads. Through advanced casting technology and strict quality control, we ensure that our products are chemically stable and of excellent quality.
304 / 316 Stainless Steel Elbow Casting Fitting
Material:
Stainless Steel 304 / 316
Standard:
ASTM A351 CF8 / CF8M
ISO 4144 / EN 10241
BSP threaded according to ISO 7-1 / EN 10226-1
Outer Diameter:
DN8 – DN100
General Specifications:
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Pressure Rating: Class 150 / PN10
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Thread Standards: BSPT (British Standard Taper), NPT (National Pipe Taper), BSPP (British Standard Parallel)
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Size Range: 1/8" ~ 4" (custom sizes available)
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Working Temperature: -20°C to 200°C (depending on material and media)
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Connection Types: Female Thread / Male Thread / Union / Weld End
Key Advantages:
1.Easy installation, compact structure, suitable for a wide range of systems
2.Precision threading ensures excellent sealing and leak prevention
3.Multiple material options to meet various corrosion and temperature conditions
4.Highly standardized, compatible with global pipe systems
Production Process
Step | Process Name | Description |
1 | Raw Material Preparation | Select stainless steel or brass; perform MTC & PMI inspection |
2 | Wax Pattern Making | Create precise wax models; assemble into wax trees (for investment casting) |
3 | Shell Building | Apply ceramic layers to build a strong mold shell |
4 | Dewaxing & Firing | Remove wax using steam; fire the shell at high temperatures |
5 | Metal Pouring (Casting) | Pour molten metal into shell molds; allow controlled cooling |
6 | Shell Removal & Cleaning | Break off ceramic shell; clean and sandblast or pickle the castings |
7 | CNC Machining & Threading | Precision machining, thread cutting (BSPT/NPT/BSPP) |
8 | Inspection | Perform dimensional, visual, thread, and optional PMI or pressure tests |
9 | Surface Treatment | Pickling, passivation, polishing or electroplating |
10 | Marking & Packaging | Laser/stamp marking; export packaging with labeling and protection |
Production Equipments
Name | Quantity |
Semi-Automatic Wax Pattern Molding Machine | 20 sets |
Fully Automatic Wax Pattern Molding Machine | 10 sets |
CNC Milling Machine | 20 sets |
Induction Melting Furnace | 9 sets |
Sandblasting Machine | 20 sets |
CNC Lathe | 120 sets |
Laser Marking Machine | 4 sets |
Manual Lathe | 1 set |
Optical Emission Spectrometer (OES) | 1 set |
Thread Gauge (CNC/Set) | 3 sets |
Cutting Machine | 4 sets |