WUXI PAZON TECHNOLOGY CO., LTD
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Stainless Steel Precision Ground Rods offer corrosion resistance without plating, available in diameters φ6–200 mm and lengths up to 6000 mm. They meet ISO f7/f8/h7 tolerance grades with Ra≤0.2 μm surface finish. A wide range of grades—austenitic, duplex, martensitic and PH—can be supplied to match specific strength and environmental requirements. Ideal for food, medical, marine and hydraulic applications, with full customization of dimensions, tolerances and material grades supported.
PZPR0054
PAZON
Stainless Steel Precision Ground Rods are manufactured from premium stainless steel hot-rolled or cold-drawn bars, finished by precision grinding. Without any additional surface coating, they rely on the inherent excellent corrosion resistance of stainless steel, combined with tight dimensional tolerances and an exceptionally smooth surface finish. They are widely used in food machinery, medical devices, chemical hydraulic systems, marine equipment, and damp or corrosive environments as precision piston rods, guide rods and shafts. A wide range of stainless steel grades can be supplied—including austenitic, duplex, ferritic, martensitic and precipitation-hardening types—to flexibly meet requirements for strength, corrosion resistance and cost.
Diameter: Mainly φ6–200 mm, larger custom sizes accepted
Length: ≤6000 mm, custom lengths available
Straightness: ≤0.2 mm/M
Tolerance Grades: IT6–IT9
OD Tolerance: According to ISO f7/f8/g6/h7/h8/h9; customized tolerances available upon request
Ovality: Half of the tolerance value ISO f7
Core Hardness: Depending on the stainless steel grade, typically ≤200 HB (e.g., for austenitic grades; martensitic and PH grades can be significantly hardened by subsequent heat treatment)
Surface Treatment: No plating, bare stainless steel ground finish; passivation available upon request
Surface Roughness: Ra≤0.2 μm, Rt≤2 μm
Packing: Anti-rust oil + cardboard tube/plastic sleeve + wooden case
Intrinsic Corrosion Resistance: The stainless steel substrate itself provides excellent anti-corrosion performance without relying on any coating, eliminating the risk of coating peeling
High Precision Ground Finish: Strict dimensional tolerances and exceptionally low surface roughness allow direct integration with high-precision hydraulic seals and bearings
Extensive Material Choice: Covering austenitic (304/316), duplex (2205), ferritic, martensitic (410/420) and precipitation-hardening (17-4PH) grades to meet diverse demands for strength, temperature resistance, and magnetic properties
Hygienic and Clean: The smooth surface resists contaminant adhesion, ideal for food-grade and medical clean environments
Excellent Dimensional Stability: Precision grinding delivers superior straightness and roundness, ensuring smooth equipment operation
Good Weldability: Most austenitic grades offer excellent weldability for easy integration (note that specific welding procedures apply to martensitic and other grades)
In addition to standard specifications, we offer:
Custom diameters and lengths, including large and extra-long sizes
Tolerance grades and non-standard OD tolerances
Higher straightness upon request
Stainless steel grade selection: expert recommendation or customization for corrosion, strength, and magnetic requirements
Surface treatment: passivation for enhanced corrosion protection
End machining: chamfering, threading, stepping, etc.
Special packaging and identification
Limits and Fits Table
The table below provides shaft deviation values for commonly used tolerance grades f7, f8, g6, h7, h8, and h9 to assist your selection according to seal fits.
Limits and Fits Table | ||||||||||||
Diameter | f7 | f8 | g6 | h7 | h8 | h9 | ||||||
es | ei | es | ei | es | ei | es | ei | es | ei | es | ei | |
>6-10 | -0.013 | -0.028 | -0.013 | -0.035 | -0.005 | -0.014 | 0 | -0.015 | 0 | -0.022 | 0 | -0.036 |
>10-18 | -0.016 | -0.034 | -0.016 | -0.043 | -0.006 | -0.017 | 0 | -0.018 | 0 | -0.027 | 0 | -0.043 |
>18-30 | -0.020 | -0.041 | -0.020 | -0.053 | -0.007 | -0.020 | 0 | -0.021 | 0 | -0.033 | 0 | -0.052 |
>30-50 | -0.025 | -0.050 | -0.025 | -0.064 | -0.009 | -0.025 | 0 | -0.025 | 0 | -0.039 | 0 | -0.062 |
>50-80 | -0.030 | -0.060 | -0.030 | -0.076 | -0.010 | -0.029 | 0 | -0.030 | 0 | -0.046 | 0 | -0.074 |
>80-120 | -0.036 | -0.071 | -0.036 | -0.090 | -0.012 | -0.034 | 0 | -0.035 | 0 | -0.054 | 0 | -0.087 |
>120-180 | -0.043 | -0.083 | -0.043 | -0.106 | -0.014 | -0.039 | 0 | -0.040 | 0 | -0.063 | 0 | -0.100 |
>180-250 | -0.050 | -0.096 | -0.050 | -0.122 | -0.015 | -0.044 | 0 | -0.046 | 0 | -0.072 | 0 | -0.115 |
>250-315 | -0.056 | -0.108 | -0.056 | -0.137 | -0.017 | -0.049 | 0 | -0.052 | 0 | -0.081 | 0 | -0.130 |
>315-400 | -0.062 | -0.119 | -0.062 | -0.151 | -0.018 | -0.054 | 0 | -0.057 | 0 | -0.089 | 0 | -0.140 |
>400-500 | -0.068 | -0.131 | -0.068 | -0.165 | -0.020 | -0.060 | 0 | -0.063 | 0 | -0.097 | 0 | -0.155 |
>500-630 | -0.076 | -0.146 | -0.076 | -0.186 | -0.022 | -0.066 | 0 | -0.070 | 0 | -0.110 | 0 | -0.175 |
>630-800 | -0.080 | -0.160 | -0.080 | -0.205 | -0.024 | -0.074 | 0 | -0.080 | 0 | -0.125 | 0 | -0.200 |
>800-1000 | -0.086 | -0.176 | -0.086 | -0.226 | -0.026 | -0.082 | 0 | -0.090 | 0 | -0.140 | 0 | -0.230 |
>1000-1250 | -0.098 | -0.203 | -0.098 | -0.263 | -0.028 | -0.094 | 0 | -0.105 | 0 | -0.165 | 0 | -0.260 |
>1250-1600 | -0.110 | -0.235 | -0.110 | -0.305 | -0.030 | -0.108 | 0 | -0.125 | 0 | -0.185 | 0 | -0.290 |
Available Stainless Steel Grades & Chemical Composition
This product can be supplied in austenitic, duplex, ferritic, martensitic and precipitation-hardening stainless steels. The table below lists the standard chemical composition of commonly offered grades for your material selection reference.
Available Stainless Steel Grades & Chemical Composition | |||||||||||||
Category | GB Grade | AISI Grade | EN/DIN/NF Grade | C(%) | Si(%) | Mn(%) | P(%) | S(%) | Ni(%) | Cr(%) | Mo(%) | Cu(%) | N(%) |
Austenitic | Y12Cr18Ni9 | 303 | 1.4305 | ≤0.15 | ≤1 | ≤2 | ≤0.20 | ≥0.15 | 8-10 | 17-19 | - | ≤0.11 | |
- | 303Cu | - | ≤0.15 | ≤1 | ≤3 | ≤0.2 | ≥0.15 | 8-10 | 17-19 | - | 1.5-3.5 | - | |
06Cr19Ni10 | 304 | 1.4301 | ≤0.07 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 8-10.5 | 18-19.5 | - | - | - | |
06Cr19Ni10 | 304 | 1.4301 | ≤0.07 | ≤1 | ≤2 | ≤0.045 | 0.02-0.03 | 8-10.5 | 18-19.5 | - | - | - | |
022Cr19Ni10 | 304L | 1.4307 | ≤0.03 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 8-10.5 | 18-19.5 | - | - | - | |
022Cr19Ni10 | 304L | 1.4307 | ≤0.03 | ≤1 | ≤2 | ≤0.03 | 0.02-0.03 | 8-10.5 | 18-19.5 | - | - | - | |
- | 304L | - | ≤0.03 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-13 | 18-20 | - | - | - | |
- | - | Z2CN18.10 | ≤0.03 | ≤0.75 | ≤2 | ≤0.045 | ≤0.015 | 9-12 | 17-20 | - | ≤1 | - | |
- | 304H | - | 0.04-0.08 | ≤1 | ≤2 | ≤0.04 | ≤0.03 | 8-10.5 | 18-20 | - | - | - | |
- | 304N1 | - | ≤0.08 | ≤1 | ≤2.5 | ≤0.045 | ≤0.03 | 7-10.5 | 18-20 | - | - | 0.1-0.25 | |
10Cr18Ni9NbCu3BN | S30432 | - | 0.07-0.13 | ≤0.3 | ≤1 | ≤0.04 | ≤0.01 | 7.5-10.5 | 17-19 | - | 2.5-3.5 | 0.05-0.12 | |
06Cr25Ni20 | 310S | 1.4845 | ≤0.08 | ≤1.5 | ≤2 | ≤0.045 | ≤0.03 | 19-22 | 24-26 | - | - | - | |
- | S31254 | 1.4547 | ≤0.021 | ≤0.7 | ≤1 | ≤0.03 | ≤0.01 | 17.5-18.5 | 19.5-20.5 | 6-6.5 | 0.5-1 | 0.18-0.22 | |
- | S31050 | 1.4466 | ≤0.025 | ≤0.4 | ≤2 | ≤0.02 | ≤0.015 | 21-23 | 24-26 | 2-2.5 | - | 0.1-0.16 | |
- | S31400 | 1.4841 | ≤0.25 | 1.5-3 | ≤2 | ≤0.045 | ≤0.03 | 19-22 | 23-26 | - | - | - | |
06Cr17Ni12Mo2 | 316 | 1.4401 | ≤0.07 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 10-13 | 16.5-18 | 2-2.5 | - | - | |
06Cr17Ni12Mo2 | 316 | 1.4401 | ≤0.07 | ≤1 | ≤2 | ≤0.045 | 0.02-0.03 | 10-13 | 16.5-18 | 2-2.5 | - | - | |
06Cr17Ni12Mo2 | 316L | 1.4404 | ≤0.03 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 10-13 | 16.5-18 | 2-2.5 | - | - | |
- | 316L | - | ≤0.03 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 12-15 | 16-18 | 2-3 | - | - | |
022Cr17Ni12Mo2 | 316L | 1.4404 | ≤0.03 | ≤1 | ≤2 | ≤0.045 | 0.02-0.03 | 10-14 | 16.5-18 | 2-2.5 | - | - | |
- | - | Z2CND17.12 | ≤0.03 | ≤0.75 | ≤2 | ≤0.03 | ≤0.015 | 10-14 | 16-19 | 2-2.5 | ≤1 | - | |
- | - | Z2CND18.12 | ≤0.035 | ≤1 | ≤2 | ≤0.03 | ≤0.015 | 11.5-12.5 | 17-18 | 2.25-2.75 | ≤1 | ≤0.08 | |
06Cr17Ni12Mo2Ti | 316Ti | 1.4571 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 10.5-13.5 | 16.5-18 | 2-2.5 | - | - | |
07Cr17Ni12Mo2 | 316H | - | 0.04-0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 10-14 | 16-18 | 2-3 | - | ≤0.1 | |
022Cr19Ni13Mo3 | 317L | - | ≤0.03 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 11-15 | 18-20 | 3-4 | - | - | |
06Cr18Ni11Ti | 321 | 1.4541 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-12 | 17-19 | - | - | - | |
- | 321 | - | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-12 | 17-19 | - | - | ≤0.1 | |
07Cr19Ni11Ti | 321H | - | 0.04-0.1 | ≤0.75 | ≤2 | ≤0.03 | ≤0.03 | 9-12 | 17-19 | - | - | - | |
- | 321H | 1.4940 | 0.04-0.1 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-12 | 17-19 | - | - | - | |
07Cr25Ni21NbN | 310HCbN | - | 0.04-0.1 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 19-22 | 24-26 | - | - | 0.15-0.35 | |
06Cr18Ni11Nb | 347 | 1.4550 | ≤0.08 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-13 | 17-19 | - | - | - | |
07Cr18Ni11Nb | 347H | - | 0.04-0.1 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-13 | 17-19 | - | - | - | |
08Cr18Ni11NbFG | 347HFG | - | 0.08-0.1 | ≤1 | ≤2 | ≤0.045 | ≤0.03 | 9-13 | 17-19 | - | - | - | |
015Cr21Ni26Mo5Cu2 | N08904 | - | ≤0.02 | ≤1 | ≤2 | ≤0.045 | ≤0.035 | 23-28 | 19-23 | 4-5 | 1-2 | ≤0.1 | |
Duplex | 022Cr19Ni5Mo3Si2N | S31500 | - | ≤0.03 | 1.4-2 | 1.2-2 | ≤0.03 | ≤0.03 | 4.3-5.2 | 18-19 | 2.5-3 | - | 0.05-0.1 |
022Cr23Ni5Mo3N | S32205 | - | ≤0.03 | ≤1 | ≤2 | ≤0.03 | ≤0.02 | 4.5-6.5 | 22-23 | 3-3.5 | - | 0.14-0.2 | |
022Cr23Ni5Mo3N | S31803/F51 | 1.4462 | ≤0.03 | ≤1 | ≤2 | ≤0.03 | ≤0.02 | 4.5-6.5 | 21-23 | 2.5-3.5 | - | 0.08-0.2 | |
022Cr25Ni7Mo4N | S32750 | - | ≤0.03 | ≤0.8 | ≤1.2 | ≤0.035 | ≤0.02 | 6-8 | 24-26 | 3-5 | - | 0.24-0.32 | |
022Cr23Ni4MoCuN | S32304 | 1.4362 | ≤0.03 | ≤1 | ≤2.5 | ≤0.04 | ≤0.03 | 3-5.5 | 21.5-24.5 | 0.05-0.6 | 0.05-0.6 | 0.05-0.2 | |
Ferrite Stainless Steel | 06Cr13Al | 405 | 1.4002 | ≤0.08 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | ≤0.5 | 11.5-14.5 | - | - | - |
10Cr17 | 430 | 1.4016 | ≤0.12 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | - | 16-18 | - | - | - | |
Y10Cr17 | 430F | 1.4105 | ≤0.12 | ≤1 | ≤1.25 | ≤0.06 | ≤0.15 | ≤0.6 | 16-18 | ≤0.6 | - | - | |
Martensitic Stainless Steel | 12Cr13 | 410 | 1.4006 | ≤0.15 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | - | 11.5-13.5 | - | - | - |
Y12Cr13 | 416 | 1.4005 | ≤0.15 | ≤1 | ≤1.25 | ≤0.06 | ≤0.15 | - | 12-14 | - | - | - | |
14Cr17Ni2 | 431 | 1.4057 | 0.11-0.17 | ≤0.8 | ≤0.8 | ≤0.04 | ≤0.03 | 1.5-2.5 | 16-18 | - | - | - | |
20Cr13 | 420 | 1.4021 | 0.16-0.25 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | ≤0.6 | 12-14 | - | - | - | |
30Cr13 | 420 | 1.4028 | 0.26-0.35 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | ≤0.6 | 12-14 | - | - | - | |
04Cr13Ni5Mo | 415/F6NM | 1.4313 | ≤0.05 | ≤0.7 | ≤1.5 | ≤0.04 | ≤0.015 | 3.5-4.5 | 12-14 | 0.3-0.7 | - | ≥0.2 | |
- | - | 1.4104 | 0.1-0.17 | ≤1 | ≤1.5 | ≤0.04 | 0.15-0.35 | ≤0.6 | 15.5-17.5 | 0.2-0.6 | - | - | |
- | - | 1.4418 | ≤0.06 | ≤0.7 | ≤1.5 | ≤0.04 | ≤0.03 | 4-6 | 15-17 | 0.8-1.5 | - | ≥0.2 | |
Precipitation Hardening Stainless Steel | 05Cr15Ni5Cu4Nb | S15500 | - | ≤0.07 | ≤1 | ≤1 | ≤0.04 | ≤0.03 | 3.5-5.5 | 14-15.5 | - | 2.5-4.5 | - |
05Cr17Ni4Cu4Nb | 630 | 1.4542 | ≤0.07 | ≤1 | ≤1 | ≤0.04 | ≤0.02 | 3-5 | 15-17.5 | - | 3-5 | - | |
