Custom Titanium Equipment Manufacturer — Reactors, Heat Exchangers & Tanks Built to Drawing

Опубликовано Engineering Team, Shaanxi Qianyi Tuoda Technology Co., Ltd от 2026-11-04

Around 100 sets of non-standard equipment a year: reactors, shell-and-tube exchangers, columns, tanks, agitators, coils, separators and pipe spools. We are a material supplier first, so plate, tube, fittings and flanges can be coordinated from our stock.

Around 100 sets of non-standard equipment a year: reactors, shell-and-tube exchangers, columns, tanks, agitators, coils, separators and pipe spools. We are a material supplier first, so plate, tube, fittings and flanges can be coordinated from our stock.

Form / structure	Function	Typical choice
Reaction duty	Reactor, jacketed or coil	Residence time and heat removal
Heat duty	Shell-and-tube exchanger	Area, approach temperature, fouling
Mass transfer	Packed or tray column	Stage, pressure drop
Mixing	Top or side-entry agitator	Viscosity, shear and suspension
Storage	Vertical or horizontal tank	Volume, cleanability, drainage

Titanium Gr2 resists seawater, brine, wet chlorine and many oxidising media. Gr7 adds palladium for reducing acid; Gr12 adds Mo-Ni at lower cost. Nickel alloys handle caustic, high temperature and mixed acid where titanium cannot. Weld shielding, crevice design and cleanliness decide whether the passive film survives fabrication.

Fabrication is where titanium equipment succeeds or fails. A vessel made from certified Gr2 plate can still be rejected because a weld went blue, because the purge gas was insufficient, or because iron was embedded during a fit-up. Material certificates prove what arrived at the workshop; weld colour and NDT prove what left it.

Crevice design deserves early attention. Titanium is immune to chloride pitting in open seawater but vulnerable in tight gaps where the passive film cannot renew. Gasket grooves, lap joints and unvented support contacts need review at the drawing stage, when geometry is still cheap to change.

Nickel alloy cladding and titanium lining are often cheaper than solid titanium for large vessels. They also move the risk from the material to the fabrication, which puts the emphasis on weld overlay quality and NDT coverage. We will quote both routes and state which one we would choose for the duty.

Scope	Standard	Use
Pressure vessel	ASME Section VIII Div.1	Design and fabrication
Heat exchanger	GB/T 151	Shell-and-tube equipment
Non-ferrous vessel	NB/T 47003	Domestic pressure equipment
General design	GB/T 150	Pressure vessel principles
Welding	ASME IX / NB/T	WPS, PQR and welder qualification
NDT	RT, UT, PT, MT	Per ITP and governing code

Every order follows the same discipline: drawing or schedule review, material and standard confirmation, controlled fabrication, inspection, documents and export packing. A short lead time is useful only when the specification is correct.

Parameter	Control	Why it matters
Weld colour	Silver to light straw	Blue/grey means oxygen contamination
Penetration	Full penetration where specified	Pressure integrity
NDT	RT, UT, PT as ITP	Hidden defects
Hydrotest	Per design pressure	Leak integrity
Agitator balance	Agreed ISO balance grade	Vibration and seal life
Filtration accuracy	Micron rating by process	Separation performance

The inspection matrix follows the code, not the shop's habit. A pressure-retaining titanium weld normally sees visual and PT on the root, RT or UT on a defined percentage of the seam, and a hydrostatic test at 1.3–1.5 times design pressure. Where cyclic duty is specified, the percentage goes up rather than staying at the code minimum.

Agitators are inspected differently from vessels. The mechanical checks are runout of the shaft, impeller pitch, hub fit and dynamic balance to an agreed grade. A balanced agitator runs quietly and protects the mechanical seal; an unbalanced one destroys the seal in months and gets blamed on the seal supplier.

Industry	Medium	Equipment / process	Material choice
Chlor-alkali	Wet chlorine, brine	Cooler, reactor, cell	Gr2 / Gr7
Lithium	High-chloride brine	Exchanger, crystalliser	Gr2 / Gr12
Chemical	Acid and chloride	Reactor, column	Gr7 / nickel
Desalination	Seawater, brine	Evaporator, condenser	Gr2
Pharma	Clean water, solvent	Tank, mixer	Gr2 / polished
Marine	Seawater	Separator, piping	Gr2

Selection point	What to confirm	Why it matters

Structure follows the process, not the drawing template. A jacketed reactor suits moderate heat duty with clean product; a coil reactor suits high heat-transfer area with viscous product; a shell-and-tube exchanger suits high area with clean fluids; a packed column suits low pressure drop with corrosive service. Getting this wrong is expensive to fix later because it changes the whole equipment envelope.

Where the process data is incomplete, we say so rather than filling the gaps. A budget price built on assumed heat duty is worse than no price, because it anchors a decision that later needs a redesign.

Option	Available	Purpose
Nozzles	Orientation, size, flange class	Match site piping
Internals	Baffles, coils, spray balls, demisters	Process performance
Agitation	Impeller, seal, motor and balance	Mixing and reliability
Surface	Pickle, polish, lining, insulation	Corrosion and cleanliness
Documents	Design calc, WPS/PQR, NDT, hydro	Project handover

Custom does not mean undefined. Nozzle orientation, manway size, lifting points, drain slope, instrument ports, surface finish and insulation are all decided at drawing review and recorded on an approved drawing set. That set is the contract for both sides.

Export packing for equipment is a design task. A column that flexes in transit arrives out of tolerance; a vessel with unprotected nozzles arrives with damaged flange faces. Skidding, bracing and moisture protection are specified per item, not left to a generic crate.

Item	Commitment
Technical review	About 2 working days
Fabrication	Schedule confirmed after design approval
Dossier	MTC, WPS/PQR, welder, NDT, hydro and dimensional reports
Warranty	12 months against fabrication defects under approved operation
Packing	Sea-worthy crate, skid, moisture barrier

Can you work from our drawing?

Yes. PDF, DWG, material take-off and marked-up sketches are accepted. We confirm grade, dimensions, standards and inspection before quoting.

Can you supply small quantities?

Yes. Stock products can be supplied by piece, cut length or mixed package.

What documents are included?

MTC EN 10204 3.1 as standard. PMI, NDT, dimensional and third-party reports are available on request.

Send your drawing, schedule or size list

Tell us the material, dimensions, medium, temperature, pressure and quantity. We will confirm the selection and delivery before quoting.

Shaanxi Qianyi Tuoda Technology Co., Ltd. · Baoji, Shaanxi, ChinaMaterial on the floor. Ready when you are.