RFS Hydraulics is a subsidiary of Chuan Kok, in business since 1982 in Singapore. We supply high-quality hydraulic hardware — today serving customers across Singapore, Malaysia and Indonesia.

Chuan Kok began trading in Singapore in 1982, and RFS Hydraulics was founded as its subsidiary to take the same products and service to a wider market. Four decades on, the group serves customers across Singapore, Malaysia and Indonesia from an office in Tangerang and regional warehouses in Singapore and Malaysia.
What we do is straightforward: hold the things that are hard to find, and answer quickly. Most suppliers stock the sizes that turn over fast and order the rest from the factory — which is why one small item can hold a project for weeks. We hold 16,000+ items across the full range, not just the popular sizes.
And we answer in numbers rather than promises: quotes back within 2 working hours, goods out of the warehouse within 24 hours of a PO, with complete import documentation and EN 10204 3.1 material certificates on request.
An installation rarely needs one kind of item. The range is held so a project can be closed from one source — one quote, one shipment, one set of documents.
SS316 stainless, DIN 2391/C hydraulic steel, JIS H3300 copper.
See the range →SAE J518 Code 61/62, JIS B2291 & F7806 square flanges, split and blind.
See the range →DIN 3015 standard, heavy and anti-corrosion series — Tubeclo and STAUFF.
See the range →DIN 2353 / ISO 8434-1, JIC, double ferrule, forged to ASME B16.11.
See the range →Ball, needle and check valves to 500 bar — MHA Zentgraf.
See the range →Ball, gate, globe, butterfly, Y-strainers — ANSI, JIS, PN, threaded.
See the range →Need a flange interchange chart? JIS 10K · ANSI 150 · PN16 side by side →
| Item | How we handle it |
|---|---|
| Quotes | Back within 2 working hours with price, what is in stock and the delivery schedule — in one reply, not in instalments. |
| Stock | 16,000+ items held in Singapore and Malaysia. The full range, not just the sizes that turn over quickly. |
| Delivery | Out of the warehouse within 24 hours of a PO, anywhere in Indonesia, with complete import documentation. |
| Documents | EN 10204 3.1 material certificates with heat numbers on request — ask with the quote, not once the part is fitted. |
| Authenticity | Supplied directly from the principal or its authorised channel. Authorised distributor of 9 international brands, plus our own four exclusive brands. |
| Quality | ISO 9001 certified. |
To be the most dependable partner for hydraulic solutions in Indonesia.
To create opportunity through product you can rely on, expert advice you can trust, and service faster than anyone else offers.
We want the best for one another.
We are bigger than ourselves.
We love what we do.
Integrity is at the heart of every success.



See also the brands we carry and how to reach our team.