TORICH INTERNATIONAL LIMITED
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram |
| Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products |
| Packaging Details | In bundles or in wooden boxes. |
| Application | Hydraulic Cylinder |
| Outer diameter(round) | 30 - 630 mm, |
| Thickness | 2 - 100 mm, |
| Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn |
| Grade group | 304 316L 17-4PH Zeron100 904L |
| Length | 6M or as requirement,As customer's require |
| Brand Name | TORICH |
| Model Number | Stainless Dom Tubing |
| Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China |
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Product Specification
| Payment Terms | L/C,D/A,D/P,T/T,Western Union,MoneyGram | Supply Ability | 60000 Ton/Tons per Year |
| Delivery Time | 20-30days upon products | Packaging Details | In bundles or in wooden boxes. |
| Application | Hydraulic Cylinder | Outer diameter(round) | 30 - 630 mm, |
| Thickness | 2 - 100 mm, | Standard | ASTM,DIN,GB,JIS,API |
| Technique | Cold Drawn,Hot Rolled,Cold Rolled,ERW,Hot Rolled/Cold Drawn | Grade group | 304 316L 17-4PH Zeron100 904L |
| Length | 6M or as requirement,As customer's require | Brand Name | TORICH |
| Model Number | Stainless Dom Tubing | Certification | ISO9001 ISO 14001 TS16949 |
| Place of Origin | Zhejiang/China | ||
| High Light | Stainless Steel DOM Round Tube ，Hydraulic Cylinder Steel Tube ，Precision Steel Tube 30-630mm | ||
Material
The product is a DOM (Drawn‑Over‑Mandrel) stainless steel round tubing, cold‑drawn over a mandrel to ensure superior dimensional precision, smooth inner and outer surfaces, and enhanced weld strength. DOM refers to the manufacturing process, not the alloy. Common stainless grades for corrosion‑resistant hydraulic applications include 304L, 316L, and 17‑4PH for higher strength needs.
Specifications
Manufacturing Process: Electric resistance welded tubing with internal flash removed, then drawn over mandrel for tight tolerances and smooth finish.
Possible Materials:
304L: Austenitic stainless, widely used, good general corrosion resistance.
316L: Low‑carbon austenitic stainless with superior resistance to chlorides and reducing acids.
17‑4PH: Precipitation‑hardened martensitic stainless, high strength and hardness.
Typical Tube Sizes for Hydraulic Use: Inside diameters from approximately 1 in to 14 in, wall thicknesses from 1/8 in to 1 in, often honed for precision.
Finish: Precisely honed inner diameter—with Ra roughness and tolerances suited for hydraulic cylinders.
Chemical Composition
Here is a comparison of nominal compositions for five representative stainless steel grades:
| Grade | C (max) | Cr (%) | Ni (%) | Mo (%) | Other Additions |
|---|---|---|---|---|---|
| 304L | ≤ 0.030 % | ~18–20 % | ~8–12 % | — | — |
| 316L | ≤ 0.03 % | ~16–18 % | ~10–14 % | ~2–3 % | — |
| 17-4PH | ≤ 0.07 % | ~15–17.5 % | ~3–5 % | — | ~3–5 % Cu, Nb/Ta (~0.15–0.45 %) |
| Zeron 100 | ~0.02 % | ~24–26 % | ~6–8 % | ~3–4 % | ~0.5–1 % Cu, ~0.5–1 % W, N ~0.2–0.3 |
| 904L | — | ~19–23 % | ~23–28 % | ~4–5 % | ~1–2 % Cu |
Mechanical Properties
Typical properties differ by grade and temper:
| Grade | Tensile Strength | Yield Strength | Elongation |
|---|---|---|---|
| 304L | ~480 MPa | ~170 MPa | ~40 % (annealed) |
| 316L | — | — | — |
| 17-4PH | Up to ~190 ksi (~1310 MPa) in H900; varies by temper | Up to ~170 ksi (~1170 MPa) in H900; varies | ~10–18 % depending on temper |
| Zeron 100 | ~109 ksi (~751 MPa) | ~80 ksi (~552 MPa) | ≥ 25 % |
| 904L | ~490 MPa | ~220 MPa | ~35 % |
Key Features
Exceptionally smooth internal surface and tight dimensional tolerances—ideal for hydraulic cylinder efficiency and sealing.
High mechanical strength and fatigue resistance due to the DOM manufacturing process.
Tailored corrosion resistance:
304L for general applications;
316L for environments with chlorides or acids;
17‑4PH for high-strength requirements;
Zeron 100 and 904L for aggressive, highly corrosive conditions.
Standards
304L / 316L stainless tubing typically adheres to ASTM A269 (welded) and A511 (seamless).
17‑4PH (SAE Type 630, UNS S17400) follows aerospace or specialized specifications.
Zeron 100 (UNS S32760) conforms to multiple standards, including ASTM A240, A182 (F55), A276, among others
904L is a high-alloy stainless often referenced in corrosion-resistant applications; specific standards vary.
Applications
This DOM stainless steel tubing is ideal for hydraulic cylinders where precision, wear resistance, and corrosion protection are critical. Common application domains include marine, chemical, food & beverage, aerospace, oil & gas, and industrial hydraulics.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock,
it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Importer,Exporter,Trading Company,Seller
Year Established:
1997
Total Annual:
25000000-30000000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution providerTorich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the ... Who We are ? -------A professional steel pipes materials inventor, manufacturer and solution providerTorich International Limited is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes, which holds the ...
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