Impervious Graphite Heat Exchangers NDT
Authoritative engineering guide for Phenolic & PTFE resin-impregnated graphite block and tube exchangers handling Hydrochloric Acid (HCl), Sulfuric Acid (H2SO4), and Phosphoric Acid.
High-definition optical videoborescopy and ultrasonic attenuation testing for internal block spalling and resin debonding.
How B2B Project Workflow Works
From initial RFP scope to direct client sign-off. NDT EXCHANGE does not charge commissions or manage project payments.
RFP Scope
Asset Owner posts turnkey B2B inspection scope with technical specifications, asset list, and required NDT methods.
Competitive Bids
Certified NDT agencies submit competitive proposals (Fixed-Bid / T&M) detailing technician rosters and day rates.
Direct Settlement / Escrow
Client awards bid and sets up direct milestone payment or escrow — NDT EXCHANGE never holds or manages project funds.
Field Execution
Level II/III inspectors perform on-site testing (PAUT, TOFD, MFL, UT), capturing flaw data and calibration overlays.
Sign-Off & Payout
Level III auditor reviews findings; upon client sign-off, funds release directly to agency with 0% platform commission.