Stainless Steel Round Hollow Angle Bar

Model NO.
Tolerance on Diameter
Half of The Tolerance ISO F7
Chrome Thickness
20micron (Min)
Hardness of The Chrome Layer
850hv (Min)
Surface Roughness
Ra ≤ 0.2 Micron
≤ 0.2mm/M
Supply Condition
Hard Chrome Plated/ Hardened and Tempered/ Inducti
Anti Rust Oil to Be Spread on Rod Surface and Each
Transport Package
Anti Rust Oil to Be Spread on Rod Surface and Each
E355, ST52, SAE1020, SAE1026, SAE1045, 4140, etc.
HS Code
Fast and great quotations, informed advisers to help you choose the correct product that suits all your preferences, a short creation time, responsible top quality control and different services for paying and shipping affairs for Stainless Steel Round Hollow Angle Bar, The product will supply to all over the world, such as: Thailand, Mauritius, Angola, Our company offers the full range from pre-sales to after-sales service, from product development to audit the use of maintenance, based on strong technical strength, superior product performance, reasonable prices and perfect service, we'll continue to develop, to supply the high-quality goods and services, and promote lasting cooperation with our customers, common development and create a better future.
EAST AI MACHINERY CO., LIMITED Diamond / Audited Supplier
East Ai Machinery founded in 2006, our factory located in beautiful Wuxi city. We make Custom Hydraulic Cylinder, Pneumatic Cylinder, Honed Tube, Skived tube, Chrome Plated Rod, Hollow Chrome Bar, etc.

We are reliable:
Raw material is mainly from some famous refinery steel mills, such as BAO STEEL, Tianjin, and Chengdu etc, which are the best and largest raw material manufacturers in China.
We have experienced technicians and skilled workers and provide you with high quality and efficient products.
We have advanced equipments: Cold drawing machine, honing machine, skiving&roller burnishing machine, centerless grinding machine, straightening machine, polishing machine, etc.
Delivery on time and best after-sale service.

Hard chrome plated rod (HRC 15-20)
Hardened and tempered chrome plated rod (HRC 28-30)
Induction and hardened chrome plated rod (HRC 55-60)
Hollow chrome bar
Hollow piston rod
Cylinder rod

Hard Chrome Plated Rod (Piston Rod)
1.   Material: CK45, 1045, 4140, 4340, JIS 45C, 40Cr, 42CrMo, 20MnV6, SS431 ,SS430, Duplex2205, Stainless steel 304/316, etc.
2.   Diameter: 6-500mm
3.   Length: Max 13m
4.   Tolerance on diameter: ISO f7
5.   Ovality: Half of the tolerance ISO f7
6.   Chrome thickness: 20micron (min)
7.   Hardness of the chrome layer: 800HV (min)
8.   Surface Roughness: Ra ≤ 0.2 Micron
9.   Straightness: ≤ 0.2mm/m
10.        Supply condition: Hard chrome plated/ Hardened and tempered/ Induction hardened
11.        Packing: Anti rust oil to be spread on rod surface and each rod to be packed in paper roll and then in wooden case.

CK45 / Chemical Composition (%)
C Mn Si S P
0.40-0.50 0.60-0.90 0.035 0.035 0.035


CK45 / Mechanical Properties
T.S. (Mpa) Y.S.(Mpa) E % Condition
≥630 ≥380 ≥15% Normalised


ISO f7
OD (mm) Tolerance (mm)
6 10 -0.013 -0.028
10 18 -0.016 -0.034
18 30 -0.02 -0.041
30 50 -0.025 -0.05
50 80 -0.03 -0.06
80 120 -0.036 -0.071

CK45 Normalised : 15-20 HRC
CK45 Hardened and Tempered: 28-30 HRC
CK45 Induction and Hardened: 50-55 HRC