Quality & Certification

Every cylinder is pressure-tested up to 1.5× its rated pressure.

Certificates and test reports are shared in the shipment file. Market compliance marks (CE, EAC) are documented on customer request. From the raw-material certificate to the pre-shipment pressure test, the entire process is fully traceable.

Document archive

ISO 9001, CE declaration and trademark registration

The documents below are held in the corporate archive. Click a document to open the full PDF; the ISO 9001 certificate is available on request. For renewal cycles, the current copy is requested from the engineering team.

CE Marking

CE Marking

EC Declaration of Conformity · Machinery Directive 2006/42/EC
EU + United Kingdom

Manufacturer's EC Declaration of Conformity under the Machinery Directive 2006/42/EC, provided on request. Hydraulic cylinder scope: tipper, forklift, crane, waste vehicle, concrete pump, manlift and related applications.

Issued by: Manufacturer declaration (TS EN ISO 12100:2010, TS EN ISO 4413:2011)
Date: 11.02.2019, Konya
Validity: Directive-based, renewed per product
View document →
ISO 9001:2015

ISO 9001:2015

No: I1710422937Q
Quality Management System: Design, production and sale of single/double-acting special-purpose cylinders and telescopic cylinders
Global markets

Quality management system certification. Audits design, production and sales processes against ISO 9001:2015 standards. Renewal confirmed on request.

Issued by: KingCert International (IAS Accredited, MSCB-196)
Date: Publication date 20.03.2024
Validity: 3-year certification cycle
On request
Trademark Registration Certificate

Trademark Registration Certificate

No: 2017 73376
Trade-Service trademark · Nice classes 07, 12, 35, 37
Türkiye (TÜRKPATENT)

Legal trademark registration of HPS. Registered with the Turkish Patent and Trademark Office under Nice classification 07 (machinery), 12 (vehicles), 35 (advertising) and 37 (construction services).

Issued by: Turkish Patent and Trademark Office
Date: Registration date 24.01.2018
Validity: 10-year protection, renewable
View document →
On request

Product-based documents

EAC (Eurasian Conformity)

TR CU / GOST equivalent
Russia · Belarus · Kazakhstan · Armenia · Kyrgyzstan

Eurasian Economic Union conformity mark. Mandatory for the CIS market. Issued on customer request.

EN 10204 3.1 Mill Test Report

Material certificate
All markets

Factory test report for tube (DIN 2391-2 ST52 / E355), rod (CK45 / 42CrMo4) and plating (hard chrome ~30 µm, ≥ 20 µm). Raw-material supply certificate is traceable.

Pressure Test Report

Test up to 1.5 × rated pressure
All shipments

Before shipment, every cylinder is pressure-tested up to 1.5× its rated pressure. The test report is delivered to the customer in the shipment file.

Further certificates and reports

Per product and project
All markets

We can arrange these as needed, for example an ISO 9227 salt-spray report from an accredited laboratory.

Test procedure

Six-stage quality control before shipment

Six-stage traceability from raw-material intake to shipment dispatch. Each stage produces a certificate or test report; the complete file is delivered to the customer together with the shipment.

HPS basınç test presi
ISO 10100 · ≤ 1.5×
  1. 01
    Raw-material intake
    Tube and rod material is accepted with an EN 10204 3.1 certificate. The certificate number is recorded in the traceability file.
  2. 02
    Machining tolerance
    Inner diameter, outer diameter and straightness measurement after CNC turning. Out-of-tolerance parts are segregated through the traceability system.
  3. 03
    Raw-material rod check
    Acceptance test of certified hard chrome plated rod: plating thickness (~30 µm typical, min. 20 µm), surface roughness, EN 10204 3.1 mill test report verification.
  4. 04
    Weld penetration check
    After MIG/TIG welding, seam penetration is checked visually and by liquid leak testing. Pressure-vessel grade seam.
  5. 05
    Post-assembly sealing
    Dry-air sealing test after seal-set assembly. Seal selection depends on the application (NBR / FKM / PU / PTFE).
  6. 06
    Pressure test · ISO 10100 (up to 1.5× rated)
    Before shipment, every cylinder is pressure-tested to the ISO 10100 acceptance test standard, up to 1.5× its rated pressure. Test pressure, duration and sealing result are recorded in the test report. Fatigue test (ISO 10771-1) is arranged on request.
Test standards

ISO 10100 + ISO 10771-1 + ISO 4413: acceptance, fatigue, safety

The HPS test procedure is carried out against 3 international standard references. The scope and reporting format of each test procedure is detailed below.

ISO 10100

Hydraulic cylinder acceptance test

Sealing + static pressure test at up to 1.5 times the rated pressure. Hold under proof pressure per ISO 10100 (typically ~10 s). Visual leak + pressure drop check.

HPS application
Every cylinder · 100% test before shipment
ISO 10771-1

Cyclic fatigue test

Fatigue life test of metal body + head + base. Arranged per customer spec. Test result observes cracking or permanent deformation.

HPS application
On request · additional test for the OEM approval process
ISO 4413

Hydraulic safety requirements

General safety rules for hydraulic power systems. Proof test pressure, pressure limitation, sealing safety requirements.

HPS application
Compliance in the design + production process
Material & standard

Reference norms

Barrel tube
DIN 2391 ST52 / EN 10305-1 E355 · cold-drawn seamless honed tube, H8 tolerance
Rod stock
CK45 · 42CrMo4 hard chrome plated rod (certified supply)
Seal set
NBR · HNBR · FKM · PU · PTFE, depending on application
Mounting
ISO 6020-2 (tie-rod) · ISO 6022 (heavy duty) reference
Test
ISO 10100 acceptance test (up to 1.5× rated) · ISO 10771-1 fatigue (on request)
Safety
ISO 4413 hydraulic safety standard
US compatibility
NFPA T3.6.7R compliance

Standard titles are a dimensional reference; certificate documents are issued per product and shared together with the customer product spec file.

HPS manufactures under its registered trademark; all certificates and documents above are issued in the name of our legal entity.