Frequently Asked Questions

We are an importer and distributor of products and services for factories, industries, and construction work in Thailand. Our offering covers 8 categories — Warehouse Products, Power Tools (BOSCH, MAKITA, MILWAUKEE), galvanic cathodic protection for steel reinforcement in concrete, specialised paints, refrigerants, IoT/engineering services, welding fire blankets, and lubricants. Founded in 1988; we work with major Thai institutions including the Bangkok Metropolitan Administration, BMTA, the State Railway of Thailand, and SCG.

53/8 Moo 8, Bangkrang, Mueang, Nonthaburi 11000, Thailand Business hours: Monday–Saturday, 08:30–17:30 Phone: +66-2-096-2118 / +66-81-866-8368 (Khun Nawin) / +66-83-494-6958 (Khun Worrada) LINE Official: @406rrgvm Email: info@sahawatthanakit1988.com

Galvanic cathodic protection embeds zinc anodes into concrete to prevent corrosion of reinforcing steel. It suits coastal structures, bridges, drainage systems, jetties, and rehabilitation of corroded structures. Standards referenced: • ASTM B418 Type II (zinc anode specification) • TIS 3029-2563 (Thai Industrial Standard) • ISO 12696:2022 • ACI 222R-19 See our "Galvanic Cathodic Protection for Steel Rebar in Concrete" article in the Insights section for technical detail.

For commercial sales in Thailand: • Retail buyers — no special licence required, but ideally only certified technicians or service centres with proper recovery/charging equipment. • Sellers must hold a Hazardous Substance Licence (วอ.) under the Hazardous Substance Act B.E. 2535. Sahawatthanakit holds all required licences. • Imports/exports go through customs and may need notification to the Department of Industrial Works. • A2L refrigerants (R32, R1234yf) require ventilated storage and handling. If you're unsure about applicable regulations, ask our team before ordering.

Fire blankets have no fixed expiry; service life depends on storage and use: • Stored dry, folded, used for light-to-medium welding: 5-10 years • Frequent rain or moisture exposure: 1-2 years • Slag burn-through or visible holes: replace immediately Inspect before every use. If you see holes, burn-through, or fabric becoming brittle — retire it for safety.

Depends on the product: • Power tools / parts — no minimum, single-piece orders accepted • Anti-corrosion anodes / paints / fire blankets — by standard pack, or custom-cut to project • Refrigerants / lubricants — by package size (cylinder / gallon / drum) We ship nationwide via private logistics (Kerry, J&T, BMTA freight). Heavy items use specialist carriers — freight billed at cost. Greater Bangkok and Nonthaburi: in-house delivery available for bulk orders.

Yes — full tax invoices on every order. Tax ID 0125563021156 (VAT-registered). We accept withholding tax: • Por Ngor Dor 53 (corporate) — 3% on services • Engineering / install services — 1% Payment: bank transfer to corporate account / cash / cheque in the name of "บริษัท สหวัฒนกิจ (1988) จำกัด". For government projects we accept Ministry of Finance documentation (TOR, specs, contracts).

Yes — our engineering team provides full service: • On-site survey before quoting (free in Greater Bangkok; travel charged for upcountry) • Project-specific design — galvanic cathodic protection layout, refrigeration systems, electrical panels • Commissioning and post-install testing • Maintenance contracts (PM) for electrical systems, railway equipment, IoT monitoring • Training for your in-house technicians Contact our team to schedule an on-site visit or request a project-specific scope of work.