Semiconductor Welding Services
Get a QuoteISO 9001:2015 Certified | AWS Qualified | Helium Leak Testing to 5×10⁻¹⁰ Torr
Precision orbital and manual GTAW welding for process gas systems, vacuum components, chemical delivery lines, and clean utilities. Our qualified procedures, in-house leak testing, and approved vendor network deliver semiconductor-grade assemblies with full traceability.
Welding and Fabrication for Semiconductor Manufacturing
Striking Precision Welding provides precision welding services for semiconductor equipment manufacturers, fab contractors, and process tool integrators. Our ISO 9001:2015 quality management system, qualified orbital and manual GTAW procedures, and in-house helium leak testing support the documentation and validation requirements semiconductor applications demand.
We fabricate process gas systems, vacuum components, wet chemistry distribution lines, and clean utility assemblies using 316L VIM-VAR stainless steel, Hastelloy C-276, and Inconel 625 when customer specifications require. Our Class 100 cleanroom supports contamination-controlled welding operations, with electropolish, passivation, and final cleaning available through our approved vendor network.
Semiconductor Applications
From process tool integration to facility infrastructure, we fabricate the critical systems that keep fabs running. Our work spans gas delivery, vacuum, wet chemistry, and clean utilities, each with the material selection, welding procedures, and documentation your application requires.
Process Gas Systems
Gas delivery systems, panels, and manifolds for CVD, PVD, etch, and deposition processes. Orbital tube welding with high-purity argon purging delivers consistent, oxide-free internal surfaces.
Vacuum Systems Components
Vacuum chambers, forelines, manifolds, and exhaust handling components certified to 10⁻⁹ Torr. Conflat, KF, and custom flange configurations with in-house helium leak verification.
Wet Chemistry Distribution
Corrosion-resistant piping for HF, HCl, H₂SO₄, and NH₄OH distribution. Hastelloy and specialty alloys with validated cleaning protocols and full material traceability.
Clean Utilities
DI water, CDA, and nitrogen distribution supporting 18.2 MΩ·cm resistivity and sub-micron filtration specs. Sanitary welding techniques adapted for fab cleanliness requirements.
Capabilities & Quality Assurance
Testing and Validation
In-House: Helium mass spectrometer leak testing to 5×10⁻¹⁰ Torr, pneumatic and hydrostatic pressure testing, vacuum qualification to 10⁻⁹ Torr. All with documented reports.
Through Approved Vendors: Electropolish to <15 Ra, passivation per ASTM A967, multi-stage cleaning (degreasing, DI rinse), nitrogen-purged packaging. Full certificates of conformance provided.
Documentation and Quality Assurance
Our ISO 9001:2015 quality management system provides the traceability and documentation semiconductor projects require:
- Weld parameter logs, welder ID, and WPS/PQR references
- MTRs with heat/lot numbers tied to each weld
- Helium leak, pressure test, and vacuum certification reports
- Purge logs and in-process photos when required
- Vendor certificates of conformance for all outsourced processes
Technical Specifications
| Parameter | Capability |
| Tube OD Range | ⅛" to 20" |
| Wall Thickness | 025" to .500" |
| Welding Processes | Orbital GTAW, Manual GTAW |
| Materials Qualified | 316L VIM-VAR, 316L, 304L, Hastelloy C-276, Inconel 625 |
| Leak Test Sensitivity | 5×10⁻¹⁰ Torr (helium mass spectrometer) |
| Vacuum Certification | To 10⁻⁹ Torr |
| Surface Finish | |
| Passivation | Per ASTM A967 (via approved vendor) |
| Fittings | Conflat, KF, VCR, and custom configurations |
| Quality System | ISO 9001:2015 certified |
Cleanroom Welding Environment
Our Class 100 cleanroom provides controlled conditions for contamination-sensitive welding operations: HEPA-filtered positive pressure, full gowning protocol, controlled access, and inert gas purging during welding.
For projects requiring certified ISO 14644-1 classification or continuous particle monitoring, discuss your specific requirements with our team.
Why Choose Striking Precision Welding?
Qualified Welding Procedures: Orbital and manual GTAW/TIG procedures qualified for semiconductor applications, with documented parameters and welder certifications
In-House Leak Testing: Helium mass spectrometer testing to 5×10⁻¹⁰ Torr sensitivity, plus pneumatic and hydrostatic pressure testing with full reports
Material Traceability: 316L VIM-VAR sourced with MTRs and heat/lot numbers tied to each weld
Broad Capability Range: Tube sizes from ⅛” to 20″ OD, wall thickness from .025″ to .500″
Specialty Fittings: Experience with Conflat, KF, VCR, and other semiconductor-standard fittings
Approved Vendor Network: Electropolish to <15 Ra, passivation per ASTM A967, and post-weld cleaning through qualified vendors
Honest Capabilities: We’re transparent about what we do in-house versus through approved vendors. Full documentation and certificates of conformance either way
Frequently Asked Questions
Q: Do you have certified ISO Class 5 (Class 100) cleanrooms?
A: We operate a Class 100 cleanroom environment with HEPA filtration and controlled access. For projects requiring certified ISO 14644-1 classification with audit documentation, discuss your specific requirements with our team.
Q: Can you provide particle counts on finished assemblies?
A: Particle count verification is available through our approved vendor network as part of final cleaning and validation packages.
Q: Do you comply with SEMI standards?
A: While we don’t currently hold SEMI certifications, our procedures align with high-purity welding practices, and we can work to customer-specific requirements derived from SEMI F57, F78, and related standards.
Q: What leak rate can you certify?
A: Our in-house helium mass spectrometer testing certifies to 5×10⁻¹⁰ Torr sensitivity, with vacuum performance certification to 10⁻⁹ Torr.
Q: Do you handle post-weld cleaning and packaging?
A: Available through our approved vendor network with full documentation. We can perform nitrogen purging in-house; assemblies requiring validated cleaning specs typically go through vendors for complete processing.