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 |
| Titanium PEEK-Insulated Hybrid Bolt | Grade 5 Ti-6Al-4V |
| Titanium Serrated Lock Washer | Grade 5 Ti-6Al-4V |
| Titanium Slip-On Flange | Grade 2 CP-Ti |
| Titanium Socket Head Cap Screw (ISO 4762) | Grade 5 Ti-6Al-4V |
| Titanium Spring Lock Washer (DIN 127) | Grade 5 Ti-6Al-4V |
| Titanium Stud Bolt (ASTM A193) | Grade 5 Ti-6Al-4V |
| Titanium Threaded Rod (1m) | Grade 5 Ti-6Al-4V |
| Titanium U-Bolt | Grade 5 Ti-6Al-4V |
| Titanium Weld Neck Flange | Grade 2 CP-Ti |
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 Titanium Manufacturing Center is operated by Baoji Boze Metal Products Co., Ltd.
Certifications verified by NADCAP and compliant with ASTM International titanium standards (B265, B348, B381, F136, F2924) and ISO 13485 medical-device QMS.