Pregled
Dobro došli u našu kategoriju cijevi hidrauličkih cilindara brušenih i brušenih (SRB). Nudimo kompletan asortiman preciznih cijevi za hidraulične i pneumatske cilindre, proizvedenih prema standardima EN 10305-1, EN 10305-2, ASTM A519 i ASTM A513.
Sve naše cijevi su hladno vučene, brušene ili obrađene SRB-om, čime se osigurava:
·Unutarnje površine poput zrcala
·Uske dimenzijske tolerancije (H8 ili bolje)
·Izvrsna ravnost i zaobljenost
·Dugotrajna izvedba brtve i klipa
· Ova kategorija pokriva i bešavne i zavarene cijevi, pružajući opcije za teške, srednje teške i troškovno učinkovite primjene.
Potkategorije proizvoda
1. EN 10305-1 brušene i SRB cijevi – bešavne
·Norma: EN 10305-1, E355
·Površinska obrada: Ra ≤ 0,4 μm
·Tolerancija: H8
· Primjena: visokotlačni hidraulički cilindri, građevinski strojevi, industrijska oprema
2. EN 10305-2 brušene i SRB cijevi – zavarene (CDW)
·Norma: EN 10305-2, E355
·Površinska obrada: Ra ≤ 0,4 μm
·Tolerancija: H8
· Primjene: Isplativi srednjetlačni hidraulički cilindri, poljoprivredni i industrijski strojevi
3. ASTM A519 brušene i SRB cijevi – bešavne
·Ocjene: ST52 / 20MnV6 / 27SiMn
·Površinska obrada: Ra ≤ 0,4 μm
·Tolerancija: H8
· Primjene: hidraulički cilindri za teške uvjete rada, sjevernoameričko i globalno tržište
4. ASTM A513 brušene i SRB cijevi – zavarene (CDW)
·Ocjene: ST52 / SAE 1026
·Površinska obrada: Ra ≤ 0,4 μm
·Tolerancija: H8
· Primjene: hidraulički cilindri srednjeg pritiska, automobilska industrija, rukovanje materijalima
Zašto odabrati naše brušene i SRB hidraulične cijevi?
· Širok raspon standarda i razreda za sva tržišta
· Bešavne i zavarene opcije za primjene visokog i srednjeg tlaka
· Precizno izbrušeno i SRB obrada za minimalno trenje i maksimalan vijek trajanja brtve
· Prilagođene veličine dostupne u metričkim i imperijalnim jedinicama
· Visoka ravnost i točnost dimenzija za pouzdanu montažu cilindra
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1. Zašto je bitan odabir cijevi u automobilskim komponentama Jedan prijelom u cijevi pogonskog vratila može uzrokovati katastrofalan kvar na autocesti. Čelična cijev unutar amortizera, poluge ovjesa ili tračnice šasije nije samo šuplji komad metala — to je strukturni element kod kojeg pogrešan odabir kvalit...
Što je DOM ST52.3 cijev? Cijev hidrauličkog cilindra koja daje srednji hod košta više nego što bilo koji proračun zastoja stroja može izmjeriti. DOM ST52.3 cijev premošćuje jaz između uobičajenih zavarenih cijevi i skupih bešavnih proizvoda, isporučujući snagu razvlačenja i dimenzionalnu preciznost sustava ...
A honed tube for hydraulic cylinder is a precision-engineered seamless or welded steel tube that undergoes an internal surface finishing process known as honing. This process creates a cross-hatched microstructure on the inner bore, which is critical for optimal oil retention and piston seal performance. The resulting surface roughness typically ranges between Ra 0.1–0.4 µm, ensuring minimal friction and wear during reciprocating motion. At Jiangsu Suao Metal Product Co., Ltd., we produce honed tubes with tight dimensional tolerances—often within ±0.05 mm on inner diameter—and straightness under 0.3 mm/m, meeting the demanding requirements of high-pressure hydraulic systems.
SRB (Skived and Roller Burnished) tube is another high-performance option for hydraulic cylinder barrels, offering superior surface finish and mechanical properties compared to conventional honed tubes. The SRB process involves skiving to remove material and then roller burnishing to cold-work the surface, achieving a mirror-like finish with Ra values as low as 0.05 µm. This not only enhances corrosion resistance but also improves fatigue strength due to induced compressive residual stresses. As a manufacturer with integrated cold drawing and finishing lines, we at Suao can deliver SRB tubes in both carbon and alloy steel grades, tailored to operating pressures exceeding 350 bar.
The selection of base material significantly influences the performance of a hydraulic cylinder honed tube. Common grades include ST52 (E355), Ck45, 20MnV6, and 42CrMo4, each chosen based on required tensile strength, weldability, and hardenability. After cold drawing—which enhances dimensional accuracy and surface integrity—the tubes undergo stress-relief annealing to prevent distortion during subsequent machining or honing. We incorporate inline ultrasonic testing and eddy current inspection to detect subsurface defects, ensuring every hydraulic cylinder honed tube we supply meets ISO 8535-1 standards for hydraulic fluid power applications.
Beyond dimensional precision, surface condition plays a decisive role in the longevity and reliability of steel tubes for hydraulic cylinder barrels. To combat corrosion during storage and transport, we offer three primary surface treatments:
As a certified Custom Surface-Treated Steel Pipes – E-Coated, Phosphated, and Oiled manufacturer in China, we tailor these treatments to your logistics environment and assembly timeline.
| Parameter | Honed Tube | SRB Tube |
| Surface Roughness (Ra) | 0.1–0.4 µm | 0.02–0.08 µm |
| Production Lead Time | Moderate | Shorter (single-pass process) |
| Typical Wall Thickness Range | 4–40 mm | 6–30 mm |
| Best Suited For | Heavy-duty cylinders, long stroke applications | High-speed, high-cycle, or cleanroom environments |
Our dual-capability production lines allow us to recommend the optimal solution—whether honed or SRB—based on your specific duty cycle, pressure rating, and environmental exposure. With over 50,000 tons annual output and smart manufacturing integration, Jiangsu Suao ensures consistent quality across both product types.
