Scope
Founder and company
Sheet
06 · About
Location
Nonthaburi, Bangkok
Rev
r1 · 2026.08.24
About

We build solutions, systems, workflows, engineering tools and complete calculation packages.

Twelve years inside engineering firms — pressure equipment, heat exchangers, tanks, skid and piping packages, and the people who fabricate them. That is where every one of these came from.

Srutheesh Saseendran — founder, Zb International.

Three pieces of equipment, drawn the way they were designed A draftsman's sheet: a pressure vessel with elliptical heads on its centre-line, a shell-and-tube heat exchanger on saddles, and an API 650 storage tank with its shell courses — the equipment behind the twelve years. PRESSURE VESSEL ASME VIII · DIV 1 & 2 SHELL & TUBE EXCHANGER TEMA · API · FIN-TUBE TOO STORAGE TANK API 650 · 620 DESIGNED BY HAND · IN EXCEL · IN THE SOFTWARE TH · VN · CN · IN

Where this comes from

01

Process equipment first, designed with my own hands — pressure vessels, shell-and-tube and fin-tube exchangers, storage tanks — by hand calculation, in Excel and in the software, to ASME, TEMA and API. Thailand, Vietnam, China, India. An ASME designer with an MBA in finance: the person who argues the calculation and the contract in the same meeting.

Then the work that stretches a designer. A company’s first cryogenic tank, developed from nothing to approval. Hydrogen-storage R&D for the automotive industry that ended in a granted patent with my name on it. Gas and steam turbine plants and their piping. Skid and module packages engineered to arrive plug-and-play. Advisory seats on some of the largest projects those companies ran — and a vendor in Vietnam qualified for a commodity they had never held, validated by independent inspection.

I do my best work on problems that reward patience. The failure nobody examined closely. The assumption three reviews carried forward unchecked.

Why workflow systems

Because I kept building them anyway. Spreadsheet tools for the same problem a fourth time. Scripts to stop a number being retyped. At some point the workarounds stopped being workarounds and became the work itself: complete systems, shaped to one firm’s way of working.

How we work

The way engineers work. Each company’s challenge gets a proper problem definition first. From the definition comes the workflow logic; from the logic, a working model — designed, then improved, by proper engineering method. That is why every system we deliver is a crafted piece of engineering. And we say what is not finished before anyone asks — a page of this site is given over to testing whether we do what we say.

The company

Zb International Co. Ltd was registered in Thailand in 2024. We are new as a company. We are not new to this work.

Standards we work to

02

ASME Sec VIII & II · ASME B31.1 & B31.3 · TEMA · API 620, 650, 660 & 661 · UL 142 · AISC 360 · EN 13445 · EN 13458 · ISO/TS 15869 · NEC · IEC · NFPA

Talk to us

Enquiry

If this describes your week, we would like to hear about it. We reply the same working day.