Cladding
Inconel Cladding & Weld Overlay — Industry-Leading Capacity
Weld overlay and cladding bonds a corrosion-resistant alloy (CRA) to your base material — extending equipment life, protecting against corrosion and wear, and reducing costly replacements. A&G Welding Specialty LLC is one of Houston’s premier cladding contractors, with capacity up to 90″ diameter and 20,000 lbs turning — handling the large-bore, high-tonnage work that most shops turn away.
Our state-of-the-art GTAW (TIG) cladding machines deliver consistent, defect-free overlay meeting the tightest industry specifications, including ASME Section IX, API 6A, API 16A, API 17D, and NACE MR0175.
What We Clad
- Pipe bore cladding & inlays
- Valve bodies, spools & flange faces
- BOP components & wellhead equipment
- Fracking valve seats & flow control parts
- Subsea components & Christmas tree parts
- Custom large-diameter parts up to 90″ OD
- Parts up to 20,000 lbs turning capacity
Alloys We Work With
- Inconel 625 (Alloy 625) — most common CRA for oil & gas
- Alloy 316 / 316L stainless overlay
- Stellite (CoCr) — wear-resistant hard-facing
- ERNiCrMo-3 / ERCCoCr-A procedures available
Qualified Procedures & Standards
- ASME Section IX — welding procedure qualifications
- API 6A, API 16A, API 17D — wellhead & BOP components
- NACE MR0175 — sour service environments
- DNV — offshore & subsea applications
Qualified Procedure Combinations
- Inconel 625 on 4130 chrome-moly
- Inconel 625 on P1 #1, #2 & #3 carbon steel
- Inconel 625 on F22 alloy steel
- Inconel 625 on Inconel 625 (buffer/repair)
- 316 Stainless on 4130 chrome-moly
- 316 Stainless on P1 #1 & #2
WPS development & PQR documentation available for custom projects. Fast quote turnaround on standard procedures.
Post Weld Heat Treatment (PWHT)
PWHT is performed on-site at A&G following cladding operations on low-alloy and high-alloy steels such as 4130 chrome-moly and F22. Our controlled heat treatment process reduces residual stress, improves ductility, and restores material properties — critical for sour service and high-pressure applications. Fully documented and compliant with applicable codes.
