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Products & Solutions
Stainless Hot Rolled & Bright Bars
Stainless Hot Rolled & Bright Bars
Stainless Steel Hot Rolled Bars & Bright Bars
1) Overview
We supply a full range of Stainless Steel Hot Rolled Bars and Bright Bars in grades such as 304, 304L, 316L, 321, 310S, 2205, 904L and more.
Hot rolled bars are widely used in structural, mechanical, and pressure applications, while bright bars are known for tight dimensional tolerances, superior surface finish, and excellent straightness, making them ideal for precision machining, automotive parts, shafts, fasteners, and tools.
2) Key Features
•Hot Rolled Bars
•Wide diameter range, good formability
•High strength for structural and pressure applications
•Available in annealed, solution treated, and heat-treated conditions
•Bright Bars
•Tight dimensional tolerances, bright surface finish
•Excellent mechanical and corrosion resistance
•Suitable for precision machining and high-accuracy assembly
•High straightness; available as cold drawn / centerless ground / polished
3) Standards
•China: GB/T 1220, GB/T 14975, GB/T 14976
•USA: ASTM A276, ASTM A479, ASTM A582
•Europe: EN 10088-3, EN 10272
•Japan: JIS G4303, JIS G4311
4) Size Range
•Hot Rolled Bars: Diameter φ 16 – 350 mm
•Bright Bars: Diameter φ 2 – 100 mm (cold drawn / ground / polished)
•Length: 2000 – 6000 mm (fixed / double length available)
•Shapes: Round, Square, Hexagonal
5) Grades
•Austenitic SS: 304, 304L, 316, 316L, 321, 310S, 347H
•Duplex SS: 2205, 2507
•High Corrosion Resistance: 904L, Alloy 20
•Precipitation Hardening SS: 17-4PH, 15-5PH
6) Applications
•Machinery: Shafts, gears, fasteners, precision components
•Automotive: Drive shafts, bolts & nuts, steering & suspension parts
•Energy & Power: Turbine shafts, pump shafts, boiler components
•Chemical & Petrochemical: Valves, pumps, corrosion-resistant parts
•Construction: Structural supports, railing, building components
•Tools & Hardware: Knives, gauges, molds, tooling parts
7) Quality & Testing
•Chemical analysis (spectrometer, C & S testing)
•Mechanical tests (tensile, hardness, impact)
•Surface quality (roughness, finish grade)
•Dimensional accuracy (OD, tolerance, straightness, ovality)
•NDT: Eddy current, ultrasonic testing
•Third-party inspection (SGS, TÜV, LR)
8) Supply & Packaging
•Forms: Hot rolled black, cold drawn, ground, polished
•Packaging: Wooden cases, steel bundles, anti-rust oil coating, seaworthy packing
•Traceability: MTC (EN 10204 3.1/3.2), full heat/batch traceability
9) Ordering Guide
•Grade (e.g., 316L / ASTM A276)
•Size (Diameter × Length)
•Surface condition (hot rolled black, bright, cold drawn, polished)
•Testing requirements (NDT, straightness, tolerance class)
•Packaging (wooden cases, anti-rust oil, strapped bundles)
10) Why Us
•Dual product line: Full coverage of hot rolled & bright bars
•High precision: Tolerance up to ±0.01 mm for cold drawn/ground bars
•Wide industry coverage: Machinery, automotive, energy, chemical, construction, tooling
•Certified quality: ISO, TÜV, BV, LR third-party approvals
•Integrated supply: Plates, pipes, fittings, bars, wire rods for EPC projects
1. General specifications:
|
Main products
|
Greades
|
Size(mm)
|
Length(mm)
|
Standard
|
|
|
Hot rolled bars
|
303, 303Cu, 304/L, 316/L,310S, 321, 410, 420, 416, 17-4PH, 201Cu | 15 / 16 / 18 / 20 / 22 / 25 / 28 / 30 / 32 / 35 / 40 / 45 / 50 / 55 / 60 / 65 / 75 / 90 / 105 / 125 / 130 / 150 |
4000-7500
|
GB JIS
ASTM EN DIN |
|
|
Peeled bars
|
303, 303Cu, 304/L, 316/L,310S, 321, 416, 17-4PH, 201Cu | 15-300 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
Cold forged bars
|
303, 303Cu, 304/L, 316/L,310S, 321 | 150 / 200 /240 / 250 / 300 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
CD bars
|
Round bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 2-90 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
Square bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 5-50 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
Hex bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 5-50 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
|
CG bars
|
303, 303Cu, 304/L, 316/L, 321, 416, 17-4PH, 201Cu | 2-90 |
2000-7500
|
GB JIS
ASTM EN DIN |
|
2. Characteristics and Uses of the Stainless Steel Bar:
|
Categories |
Grade |
Characteristics |
Use |
|
Civil instrument |
304 |
The stainless steel has the widely use, good anti-corrosion, heat-resisting,low-temperature strength and machine characteristics;it can be punched and bend well when it is hot working, and its hardering will not to be happened.(non-magnetism, the temperature between -196℃ to 800℃). | Household appliances(type 1, 2 are tableware, cupboard, indoor pipelining, heater, boiler, bathtub),the parts for car(windshield wiper, filtering, moldering), medical appliances, building materials, chemistry, food industry, agriculture, ship parts. |
|
Automatic lathe |
303 |
It will be good free-cutting to add S in the base of 304 . | Use to the parts which has high quality free-cutting, such as the parts for electronics. |
|
303CU |
It will be shapped well to add S in the base of 303. | Use to the parts which has high quality free-cutting, such as the parts for electronics. | |
|
Bearing and automatic lathe |
303 |
It will be good free cutting to add S in the base of 304 . | The bearing for OA furniture/for civil and the shaft for driving and puddler/for high quality pump. |
|
304 |
The stainless steel has the widely use, good anti-corrosion, heat-resisting,low-temperature strength and machine characteristics;it can be punched and bend well when it is hot working, and its hardening will not to be happened by heat-treatment.(non-magnetism, the temperature between -196℃ to 800℃). | ||
|
416 |
Free cutting will have a good comprehensive performance to add S by heat-treatment. | ||
|
Forging,machine work |
304L |
The low C for the grade of 304, on the common condition, its anti-corrosion is same as Type 304, but its capacity of anti-corrosion in the crystal is excellent afterwards weld or dispel stress. it will keep anti-corrosion when it has not heat-resistanted, the temperature between -196℃ to 800℃. | Apply for field machines in chemisty,coal industry,oil industry which must be high quanlity anti-corrosion in crystal,for heat-resistanted parts in building and for the parts which difficult to heat-resisting. |
|
316 |
If add Mo in it, its anti-corrosion, anti-corrsion by air and hyperthermia strength are specially good, it can be used in a cruel environment and its hardness will be improved by cold finish (non-magnetism). | For equipments which in the sea, chemistry, dye processing, papermaking,oxalic acid, fertilizer, photography, food industry, the facilities of coastal regions, for rope, CD pole, bolt, nut. | |
|
Driving shaftdriving shaft |
304N |
Compared with 304, it is added N for high strength which use in the structure parts. | The shaft for the pump and ship. |
|
316N |
For high strength which use in structure parts. | ||
|
Chemical oil and pressure vessel. |
316L |
The low-C series for the grade of 316 ,its anti-corrosion in crystal is excellent, besides the characteristics of the grade 316. | Use in the grade of 316 which has special requirment in anti-corrosion in crystal. |
|
Aviation and boiler |
321 |
Add the element Ti into the grade of 304 to avoid corrosion in the crystal,its temperature between 430℃ to 900℃. | Aircraft, exhaust guide, boiller. |
|
The bearing and the structure parts. |
630 (17-4) |
Maraging stainless steel, high strength and anti-lashed; it will get varied characterstics of the strength by the different heat treatment's way. | High strength bearing and the structure parts. |
|
XM-19 |
Austenite stainless steel includes N and microelement. |
3. Dimension and Tolerance of Hot-Rolled Round Bar (GB/T702):
|
Diameter
|
Precision Tolerance
|
||
|
ⅠLevel
|
ⅡLevel
|
ⅢLevel
|
|
|
> 20 - 30
|
± 0.30
|
± 0.40
|
± 0.50
|
|
> 30 - 50
|
± 0.40
|
± 0.50
|
± 0.60
|
|
> 50 - 80
|
± 0.60
|
± 0.70
|
± 0.80
|
|
> 80 - 110
|
± 0.90
|
± 1.00
|
± 1.10
|
|
> 110 - 150
|
± 1.20
|
± 1.30
|
± 1.40
|
|
> 150 - 200
|
± 1.60
|
± 1.80
|
± 2.00
|
|
> 200 - 280
|
± 2.00
|
± 2.50
|
± 3.00
|
|
> 280 - 310
|
± 2.50
|
± 3.00
|
± 5.00
|
4. Dimension and Tolerance of Cold forgad Bar (GB/T908):
|
Diameter
|
Precision Tolerance
|
|
|
ⅠLevel
|
ⅡLevel
|
|
|
> 120 - 140
|
-1.5 - +3.0
|
-1.5 - +3.5
|
|
> 140 - 160
|
-2.0 - +3.0
|
-2.0 - +4.0
|
|
> 160 - 180
|
-2.0 - +4.0
|
-2.0 - +5.0
|
|
> 180 - 200
|
-2.0 - +5.0
|
-2.0 - +6.0
|
|
> 200 - 220
|
-3.0 - +5.0
|
-3.0 - +6.0
|
|
> 220 - 240
|
-3.0 - +6.0
|
-3.0 - +7.0
|
|
> 240 - 260
|
-3.0 - +7.0
|
-3.0 - +8.0
|
|
> 260 - 300
|
-3.0 - +8.0
|
-3.0 - +9.0
|
5. Dimension and Tolerance of Cold-drawn Round, Square and Hexagon Bar(GB/T905):
|
Size
|
Tolerance
|
|||||
|
8 - H8
|
9 - H9
|
10 - H10
|
11 - H11
|
12 - H12
|
13 - H13
|
|
|
3
|
0 - 0.014
|
0 - 0.025
|
0 - 0.040
|
0 - 0.060
|
0 - 0.10
|
0 - 0.14
|
|
> 3 - 6
|
0 - 0.018
|
0 - 0.030
|
0 - 0.048
|
0 - 0.075
|
0 - 0.12
|
0 - 0.18
|
|
> 6 - 10
|
0 - 0.022
|
0 - 0.036
|
0 - 0.058
|
0 - 0.090
|
0 - 0.15
|
0 - 0.22
|
|
> 10 - 18
|
0 - 0.027
|
0 - 0.043
|
0 - 0.070
|
0 - 0.110
|
0 - 0.18
|
0 - 0.27
|
|
> 18 - 30
|
0 - 0.033
|
0 - 0.052
|
0 - 0.084
|
0 - 0.130
|
0 - 0.21
|
0 - 0.33
|
|
> 30 - 50
|
0 - 0.039
|
0 - 0.062
|
0 - 0.100
|
0 - 0.160
|
0 - 0.25
|
0 - 0.39
|
|
> 50 - 80
|
0 - 0.046
|
0 - 0.074
|
0 - 0.120
|
0 - 0.190
|
0 - 0.30
|
0 - 0.46
|
6. Round Steel ISO Tolerence “h Series” in Millimeters ISO 286-2 Round Bar Tolerence:
|
Nominal Size
Diameter (mm) |
H5
|
H6
|
H7
|
H8
|
H9
|
H10
|
H11
|
H12
|
|
1 - 3
|
-0.004
|
-0.006
|
-0.01
|
-0.014
|
-0.025
|
-0.04
|
-0.06
|
-0.100
|
|
(-0.00016″)
|
(-0.00024″)
|
(-0.00039″)
|
(-0.00055″)
|
(-0.00098″)
|
(-0.00158″)
|
(-0.00236″)
|
(-0.00394″)
|
|
|
> 3 - 6
|
-0.005
|
-0.008
|
-0.012
|
-0.018
|
-0.03
|
-0.048
|
-0.075
|
-0.0120
|
|
(-0.00020″)
|
(-0.00032″)
|
(-0.00047″)
|
(-0.00071″)
|
(-0.00118″)
|
(-0.00189″)
|
(-0.00295″)
|
(-0.00472″)
|
|
|
> 6 - 10
|
-0.006
|
-0.009
|
-0.015
|
-0.022
|
-0.036
|
-0.058
|
-0.09
|
-0.150
|
|
(-0.00024″)
|
(-0.00035″)
|
(-0.00059″)
|
(-0.00086″)
|
(-0.00142″)
|
(-0.00228″)
|
(-0.00354″)
|
(-0.00591″)
|
|
|
> 10 - 18
|
-0.008
|
-0.011
|
-0.018
|
-0.027
|
-0.043
|
-0.07
|
-0.11
|
-0.18
|
|
(-0.00032″)
|
(-0.00043″)
|
(-0.00071″)
|
(-0.0010″)
|
(-0.00169″)
|
(-0.00275″)
|
(-0.00438″)
|
(-0.00709″)
|
|
|
> 18 - 30
|
-0.009
|
-0.013
|
-0.021
|
-0.033
|
-0.052
|
-0.084
|
-0.013
|
-0.210
|
|
(-0.00035″)
|
(-0.00051″)
|
(-0.00083″)
|
(-0.00129″)
|
(-0.00205″)
|
(-0.00331″)
|
(-0.00512″)
|
(-0.00827″)
|
|
|
> 30 - 50
|
-0.011
|
-0.016
|
-0.025
|
-0.039
|
-0.062
|
-0.1
|
-0.16
|
-0.250
|
|
(-0.00043″)
|
(-0.00063″)
|
(-0.00098″)
|
(-0.00153″)
|
(-0.00244″)
|
(-0.00393″)
|
(-0.00630″)
|
(-0.00984″)
|
|
|
> 50 - 80
|
-0.013
|
-0.019
|
-0.03
|
-0.046
|
-0.074
|
-0.12
|
-0.19
|
-0.300
|
|
(-0.00051″)
|
(-0.00075″)
|
(-0.00118″)
|
(-0.00181″)
|
(-0.00291″)
|
(-0.00472″)
|
(-0.00748″)
|
(-0.01181″)
|
|
|
> 80 - 120
|
-0.015
|
-0.022
|
-0.035
|
-0.054
|
-0.087
|
-0.14
|
-0.22
|
-0.350
|
|
(-0.00059″)
|
(-0.00087″)
|
(-0.00138″)
|
(-0.00213″)
|
(-0.00343″)
|
(-0.00551″)
|
(-0.00866″)
|
(-0.01378″)
|
|
|
> 120 - 180
|
-0.018
|
-0.025
|
-0.04
|
-0.063
|
-0.1
|
-0.16
|
-0.25
|
-0.400
|
|
(-0.00071″)
|
(-0.00098″)
|
(-0.00158″)
|
(-0.00248″)
|
(-0.00393″)
|
(-0.00629″)
|
(-0.00984″)
|
(-0.01575″)
|
|
|
> 180 - 250
|
-0.02
|
-0.029
|
-0.046
|
-0.072
|
-0.115
|
-0.185
|
-0.29
|
-0.460
|
|
(-0.00079″)
|
(-0.00114″)
|
(-0.00181″)
|
(-0.00283″)
|
(-0.00453″)
|
(-0.00723″)
|
(-0.01142″)
|
(-0.01811″)
|
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