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 I work

Start with the engineering, not the symptom. Say what is not finished before anyone asks. Assumptions before conclusions — which is why a page here 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.