Tianjin Qiangbang Industrial Co., Ltd.

Sup9a Spring Steel, 55crmna Spring Flat Steel Bar, Spring Flat Steel Bar manufacturer / supplier in China, offering Hot Rolled Sup9 Spring Steel Flats Manufacturers in China, Sup10 High Carbon Hot Rolling Spring Steel Flat Bar, Low Price Spiral Ribs or Smooth Plain 8mm PC Steel Wire and so on.

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Hot Rolled Sup9 Spring Steel Flats Manufacturers in China

FOB Price: Get Latest Price
Min. Order: 25 Tons
Production Capacity: 800000 Ton/Year
Transport Package: Export Packing
Payment Terms: L/C, T/T

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Basic Info.

Model NO.:Sup6/Sup7/SUP9/SUP9A/SUP10
Reduction of Area:20%
Surface:Double Grooved
Quenching Medium:Oil
Yield Strength:1080n/Mm2
Heat Treatment:Quenching and Tempering
Production Line:Short Stress Tandem Rolling Line
Place of Origin:Tianjin, China
Packing Details:in Bundles and Standard Export Packing
Tensile Strength:1225n/Mm2
Elongation:9%
Trademark:Qiangbang
Specification:6*40mm to 20*150mm
Origin:Tianjin, China
HS Code:72223090

Product Description

hot rolled spring steel flats manufacturers in China 

Hot Rolled Sup9 Spring Steel Flats Manufacturers in China
Hot Rolled Sup9 Spring Steel Flats Manufacturers in China
Hot Rolled Sup9 Spring Steel Flats Manufacturers in China
We can produce high quality spring steel bar.

1, Materrial: 65Mn, 60Si2Mn, SUP-9, 50CrVA etc.
2, Thickness: 6-20mm, 40-150mm, Length: 2-8m, according to your requirements.
3, Surface: Smooth plain; Double grooved.
4, Standard: GB, ASTM, JIS
5, Usage: Springs and chains for car and agriculture machines. Anchor plate. Laminated leaf spring.
6, Package: Standard export packing. 
Chemical  Composition
Steel  Grade  Chemical  Composition    (%)
C Si Mn Cr V W B Ni Cua P S
Not  more  than 
65 0.62-0.70 0.17-0.37 0.50-0.80 ≤ 0.25       0.25 0.25 0.035 0.035
70 0.62-0.75 0.17-0.37 0.50-0.80 ≤ 0.25       0.25 0.25 0.035 0.035
85 0.82-0.90 0.17-0.37 0.50-0.80 ≤ 0.25       0.25 0.25 0.035 0.035
65Mn 0.62-0.70 0.17-0.37 0.90-1.20 ≤ 0.25       0.25 0.25 0.035 0.035
55SiMnVB 0.52-0.60 0.17-1.00 1.00-1.30 ≤ 0.35 0.08-0.16   0.0005-0.0035 0.35 0.25 0.035 0.035
60Si2Mn 0.56-0.64 1.50-2.00 0.70-1.00 ≤ 0.35       0.35 0.25 0.035 0.035
60Si2MnA 0.56-0.64 1.60-2.00 0.70-1.00 ≤ 0.35       0.35 0.25 0.035 0.025
60Si2CrA 0.56-0.64 1.40-1.80 0.40-0.70 0.70-1.00       0.35 0.25 0.035 0.025
60Si2CrVA 0.56-0.64 1.40-1.80 0.40-0.70 0.90-1.20 0.10-0.20     0.35 0.25 0.035 0.025
55SiCrA 0.51-0.59 1.20-1.60 0.50-0.80 0.50-0.80       0.35 0.25 0.025 0.025
55CrMnA 0.52-0.60 0.17-0.37 0.65-0.95 0.65-0.95       0.35 0.25 0.025 0.025
60CrMnA 0.56-0.64 0.17-0.37 0.70-1.00 0.70-1.00       0.35 0.25 0.025 0.025
50CrMnA 0.46-0.54 0.17-0.37 0.50-0.80 0.80-1.10 0.10-0.20     0.35 0.25 0.025 0.025
60CrMnBA 0.56-0.64 0.17-0.37 0.70-1.00 0.70-1.00     0.0005-0.0040 0.35 0.25 0.025 0.025
30W4Cr2VA 0.26-0.34 0.17-0.37 ≤ 0.40 2.00-2.50 0.50-0.80 4.00-4.50   0.35 0.25 0.025 0.025
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Tianjin Qiangbang Industrial Co., Ltd.

- Tianjin, China
- Manufacturer/Factory, Trading Company, Group Corporation

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