Industries
Fasteners for the chemical industry
HAGUE FASTENERS makes chemical industry fasteners to order: corrosion resistant bolts, studs, nuts and machined parts for chemical and petrochemical plant, made to your drawing in Hastelloy, Inconel, Incoloy, duplex and other alloys that stand up to acids and chlorides.
C276
Hastelloy, Inconel, Incoloy and duplex grades
PMI
Material verified where specified
3.1 / 3.2
EN 10204 certificates
1 to 500
Prototypes to production batches
Chemical and petrochemical
When the wrong bolt corrodes in months
In chemical plant the fastener is often the weakest point. A stud that pits or cracks can take a vessel, pump or pipeline out of service. We make chemical industry fasteners in grades selected for the medium, temperature and pressure, and prove the material with certificates and testing.
We supply chemical producers, refineries, pump, valve and vessel manufacturers, and the maintenance contractors who keep their plant running, often for shutdowns where every hour counts.
Where our fasteners go
- Pressure vessels and heat exchangers
- Pumps, valves and pipework flanges
- Reactors, columns and storage tanks
- Scrubbers and flue gas treatment
- Pharmaceutical and food processing equipment
- Shutdown and maintenance contractors
Materials
Grades for aggressive chemicals
Typical selections only. The grade supplied always follows your specification, and we are happy to advise.
| Service condition | Typical grades |
|---|---|
| Mixed acids and chlorides | Hastelloy C276 and C22 |
| Hydrochloric acid | Hastelloy B2 and B3 |
| Sulphuric and phosphoric acids | Incoloy 825, Carpenter 20, 904L, Hastelloy G30 |
| Chloride pitting and stress corrosion | Super duplex S32750 and S32760, 254SMO |
| High temperature process | Inconel 600 and 625, Incoloy 800H/HT |
| Caustic and alkaline media | Monel 400, nickel alloys |
Products
Chemical industry fasteners we make
Studbolts
For flanges, vessels and heat exchangers.
Hexagon bolts and nuts
Heavy hex sets in corrosion resistant grades.
Engineer studs
Tapped-hole studs for pumps and valves.
Socket screws
Non-standard cap and set screws.
Washers
Plain, machined and spherical washers.
Machined parts
Plugs, pins and components to drawing.
Proof, not promises
Every part certified and traceable
Material comes from approved UK, EU and US mills with certificates and heat numbers carried through to release. PMI, chemical analysis, intergranular corrosion testing and full mechanical testing are available through independent UKAS-accredited laboratories.
- EN 10204 3.1 and 3.2 certificates
- PMI and chemical analysis
- Intergranular corrosion testing
- PED 2014/68/EU approval for pressure equipment
- Responsibly sourced: no conflict minerals
Questions
Frequently asked questions
Which material is best for chemical plant bolting?
It depends on the chemicals, temperature and pressure. Hastelloy C276 and C22 cover the widest range of aggressive media; super duplex and 254SMO resist chlorides; Incoloy 825 and Carpenter 20 suit sulphuric acid. Tell us the duty and we will advise.
Can you supply fasteners for a plant shutdown?
Yes. We hold stocks of certified alloy bar, so urgent shutdown and breakdown orders can start straight away.
Do you supply PED compliant bolting?
Yes. We make pressure equipment fasteners under our BSI-certified PED 2014/68/EU approval. See PED fasteners.
Can you verify the material grade?
Yes. PMI and chemical analysis can be carried out on the finished parts and reported with the certificates.
Chemical plant project?
Talk to us about the duty
Send the medium, temperature, specification and drawing, and we will recommend a grade and quote quickly.