Materials & Material Selection
The right alloy decides how long a strainer basket, demister pad or wedge wire screen lasts. We select materials for your process chemistry, temperature and pressure, and prove them with certificates and PMI.
Specified for the Service, Verified Before Dispatch
Internals work in wet, turbulent and often corrosive service. A wrong grade can fail within months through pitting, stress corrosion cracking or erosion, bringing an unplanned shutdown. An over-specified exotic alloy can cost ten times more than needed.
- Selection based on fluid, contaminants (chlorides, H₂S, amines, acids), temperature and pressure
- Material test certificates to EN 10204 3.1 with heat numbers traced to each part
- Positive material identification (PMI) on every alloy component
- Sour-service materials to NACE MR0175 / ISO 15156 when specified
From 304 Stainless to Titanium
Stainless Steel 304 / 304L
Steam, air, utility water and mildly corrosive hydrocarbon service. 304L for welded internals.
Used for: Strainers, baskets, demisters, trays, tanks
Stainless Steel 316 / 316L
Molybdenum-bearing grade for chlorides and refinery service; the default for most process internals. 316L when welded.
Used for: All product lines
Stainless Steel 321 / 316Ti
Stabilised grades for high-temperature service, flue gas and cracked gas.
Used for: Demisters, sintered mesh, screens
Duplex 2205 & Super Duplex 2507
High strength with superior chloride pitting resistance: offshore separators, seawater and sour service.
Used for: Strainers, wedge wire, demisters
Monel 400
Seawater, brine and hydrofluoric acid; refinery overhead and alkylation service.
Used for: Demisters, fasteners, baskets
Nickel 200 / 201
Hot caustic (NaOH, KOH) where stainless steel suffers stress corrosion cracking.
Used for: Demisters, mesh
Hastelloy C-276 / C-22
Hot hydrochloric acid, wet chlorine and mixed acids; FGD and specialty chemical service.
Used for: Demisters, sintered and wedge wire screens
Inconel 600 / 625
High-temperature oxidising service, fired heater and incinerator ducts.
Used for: Demisters, filter elements, remeshing
Titanium Gr 2 / Gr 7
Seawater, wet chlorine and oxidising chlorides; desalination and chlor-alkali.
Used for: Demisters, wedge wire
Carbon Steel (A516, A106)
Strainer bodies, vessels and tanks with internal lining or coating where required.
Used for: Strainer bodies, vessels, tanks
PP, PTFE & FRP
Non-metallic mesh, vane packs and linings for strong acids and low-temperature scrubbers.
Used for: Demisters, tank linings
Typical Material by Service
| Industry / service | Typical condition | Recommended material |
|---|---|---|
| Steam drums, air filtration | Clean steam, ambient air | SS 304 / 304L |
| Refinery overhead, gas scrubbers | Hydrocarbons with chlorides | SS 316 / 316L |
| Offshore & sour gas separators | H₂S, CO₂, chlorides | Duplex / super duplex (NACE MR0175 when specified) |
| High-temperature flue gas | 425–900 °C oxidising | SS 321 |
| Sulfuric acid mist | Dilute H₂SO₄ | SS 316L / Alloy 20 |
| Caustic service | NaOH, KOH | Nickel 200 / 201 |
| Seawater & desalination | Brine, chlorides | Monel 400 / titanium |
| Chlor-alkali, wet chlorine | Cl₂, HCl | Titanium Gr 7 / Hastelloy |
| FGD scrubbers | SO₂, fly ash, chlorides | Hastelloy C-276 |
| Incinerators, fired heaters | High-temperature combustion gas | Inconel 625 |
| Acid scrubbers, plating | Cold strong acids | FRP / PTFE / PP |
General guidance only. Final selection follows your process data, corrosion allowance and project specification.
PMI and Traceable Certificates
Every alloy part is checked with a handheld XRF analyser before it is welded or shipped, and every order carries EN 10204 3.1 mill certificates. For filter leaves and screens we also record mesh count and aperture.
Send us your process datasheet and we will recommend the material, mesh or wire profile, and thickness for the duty.
Send Us Your Datasheet or Line List
Tell us the service, size, rating and materials. We reply with a technical proposal, drawing and lead time, usually within two working days.
Call +607 598 5796 / 5797 · [email protected]