Chemical Processing
🏭 Industrial Standard Fasteners, Flanges & Hardware
ASME B16.5 blind flanges up to 24-inch, DIN 934 hex nuts M6-M30, M16-M24 fully threaded stud bolts up to 200mm, DIN 125 flat washers, serrated external tooth lock washers, exhaust stack rain cap flapper valves, custom slip-on flange collars
What is Industrial Standard Fasteners, Flanges & Hardware?
🏭 Industrial Standard Fasteners, Flanges & Hardware represents a complete system of precision titanium components engineered for Chemical Processing applications. ASME B16.5 blind flanges up to 24-inch, DIN 934 hex nuts M6-M30, M16-M24 fully threaded stud bolts up to 200mm, DIN 125 flat washers, serrated external tooth lock washers, exhaust stack rain cap flapper valves, custom slip-on flange collars The system integrates 15 distinct component types manufactured through 3 specialized processes.
Key manufacturing processes for this system include Hot forming plate rolling for pipe fitting geometry, CNC corrosion allowance at 200W fiber laser, TIG welding Grade 2 at 200W fiber laser, Hydrostatic shell test at 200W fiber laser, CNC turning and boring for fastener geometry, each selected and qualified to meet component-specific requirements.
Engineering & Design Principles
Material: Grade 2 CP-Ti for blind flanges, slip-on collars, and rain caps requiring formability and weldability. Grade 3 for hex nuts — optimal ductility/yield balance prevents thread galling. Grade 4 for flat
Form: Plate cutting for flanges and rain caps. Cold nut forming + precision tapping for hex nuts. Thread rolling from solution-treated rod stock for stud bolts. Precision stamping + tumble deburring for was
Standards & Material Specifications
Standards: ASTM B381 Grade 2 (flanges) / ASTM B348 Grade 3 (nuts) / Grade 5 (studs) per ASME B16.5, 100% PMI + dimensional inspected, MTC traceable
Engineering Solution Blueprint
Industrial Standard Fasteners, Flanges & Hardware
Chemical Processing · Wastewater Treatment · Electroplating · Oil & Gas
1 Part Feature Analysis
ASME B16.5 blind flanges up to 24-inch, DIN 934 hex nuts M6-M30, M16-M24 fully threaded stud bolts up to 200mm, DIN 125 flat washers, serrated external tooth lock washers, exhaust stack rain cap flapper valves, custom slip-on flange collars
- ⚠️ Thread galling of Ti nuts on Ti studs requiring anti-seize compounds
- ⚠️ Washer cupping under high torque leading to preload relaxation
- ⚠️ Galvanic corrosion at Ti-to-steel flange interfaces
- ⚠️ Stud bolt stress-corrosion cracking from cut threads in chemical environments
- ⚠️ Rain cap flapper hinge fatigue from continuous wind/gas cycling
2 Material Selection Rationale
Grade 2 CP-Ti — Industrial pure Ti, general corrosion resistance
Grade 2 CP-Ti for blind flanges, slip-on collars, and rain caps requiring formability and weldability. Grade 3 for hex nuts — optimal ductility/yield balance prevents thread galling. Grade 4 for flat washers and spring lock washers needing high surface hardness. Grade 5 for high-tensile stud bolts. Beta-C (Ti-15V-3Cr-3Sn-3Al) for serrated lock washers requiring massive spring-back elasticity.
3 Form Selection Rationale
Round Bar / Rod — for turning, fasteners
Plate cutting for flanges and rain caps. Cold nut forming + precision tapping for hex nuts. Thread rolling from solution-treated rod stock for stud bolts. Precision stamping + tumble deburring for washers. Punch press stamping + vacuum hardening for serrated lock washers.
4 Manufacturing Process & Services
Core Processes:
Toll Processing Services:
Process Pitfalls:
- ⚠️ Cut threads on stud bolts create stress-corrosion crack initiation sites — rolled threads mandatory for chemical service
- ⚠️ Serrated lock washer teeth must be induction-hardened to HRC 45+ to bite into Grade 5 flange faces
- ⚠️ Rain cap flapper hinge pin must be Ti Grade 5 for wear resistance — Grade 2 wears through in <1 year of continuous cycling
5 Procurement Specifications
ASTM B381 Grade 2 (flanges) / ASTM B348 Grade 3 (nuts) / Grade 5 (studs) per ASME B16.5, 100% PMI + dimensional inspected, MTC traceable
Manufacturing Process Flow
5-axis CNC milling centers provide simultaneous multi-axis interpolation for complex titanium components. The ability to tilt the tool relative to the
Fiber laser cutting of titanium uses a focused 1 µm wavelength beam to melt and expel material through a coaxial assist gas jet. The narrow (0.1–0.3 m
Thread rolling cold-forms threads by displacing material between two reciprocating or rotary dies, rather than cutting it away. Compressive residual s
Components in This System
| Component | Material |
|---|---|
| Titanium Blind Flange (ASME B16.5) | Grade 2 CP-Ti |
| Titanium Cotter Pin (DIN 94) | Grade 5 Ti-6Al-4V |
| Titanium Countersunk Screw (ISO 10642) | Grade 5 Ti-6Al-4V |
| Titanium Flat Washer (ISO 7089) | Grade 5 Ti-6Al-4V |
| Titanium Hex Bolt (ISO 4014) | Grade 5 Ti-6Al-4V |
| Titanium Hex Nut (ISO 4032) | Grade 5 Ti-6Al-4V |
Frequently Asked Questions
What titanium grades are used in Industrial Standard Fasteners, Flanges & Hardware systems?
What manufacturing processes are used for Industrial Standard Fasteners, Flanges & Hardware?
What quality standards apply to Industrial Standard Fasteners, Flanges & Hardware components?
What industries use Industrial Standard Fasteners, Flanges & Hardware?
Can you provide DFM feedback for Industrial Standard Fasteners, Flanges & Hardware designs?
Engineering Trends
- ▸ Process: Plate laser cutting + CNC drilling of flange bolt holes
- ▸ Process: Cold heading of hex nuts + CNC tapping
- ▸ Process: Thread rolling of stud bolts from STA rod stock
Related Manufacturing Capabilities
These specialized processes support Industrial Standard Fasteners, Flanges & Hardware component manufacturing.
One Metal. One Focus. Infinite Precision.
Founded in 2011 in Baoji's Titanium Valley, BOZE Metal is dedicated exclusively to titanium — from raw material to precision engineering. AS9100D, ISO 13485 & ISO 9001 certified with 500+ clients across Aerospace, Medical & Motorsport industries, we deliver end-to-end precision titanium CNC machining with full material traceability from source to component.
Boze CNC Ti is the dedicated titanium manufacturing center of Baoji Boze Metal Products Co., Ltd.