60Si2MnA, SUP7, 9260, 65/66Si7, 60SiCr7, 60C2, 61S7 Cold drawn spring steel wire

why do you choose us:

1.We are specialized in producing spring steel wire rod and steel bar which used for making various kinds of spring, such as auto suspension spring, moto shock abosorbers, valve spring, extension spring, roller shutter doors, elevator,appliance switch, needle, cable and lots of fields and etc.

2.our factory owns the most advanced production equipment in China.The production line is a high-precision temperature control system.The steel wire heats stably, it is to ensure consistency of  material properties.

3.Our raw materials are basically from the big manufatures which supply high quality steel to ensure the fine quality of our products.

4. we have enjoyed good fame among our cusomers from oversea countires, and also established good business relationship with them based on our good quanlity and best service.

5. we have get the certificate of ISO9001 and ISO TS16949.

Advantage of our product:

1. raw Marerial:

we select good quality raw material from Baosteel

2. Surface treatment:

advanced technology of shot blasting, 100% rubbed smooth, almost can do zero defects for the surface.

3. Quality assurance:

Eddy current test online.

4.Service life:

Ultra fine martensitic structure which could improve the fatigue life of spring.

5. Applicable Industries:

Widely used in automobile, elevator, motorcycle, electric switches, high-speed rail, machinery. Meanwhile, we also can according to the customer’s requests to produce many kinds of strength level for spring steel wire.

6. packing details:

   1). inside dia: 900--2000mm.

   2). outer side dia: 1200--2400mm.

    3). straight length:2000-9000mm.

    4). or as your requirement.

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ly:"Arial","sans-serif"'>Carbon Steel:SAE1020,SAE1045,SAE1050,SAE1060;SAE1018,SAE1040,

Alloy Steel: SAE8620, SAE4130,SAE4340, SAE4140, SAE5140;SAE9840,

Tool Stee;:H13

SpecificationsForged steel round bar

Grade H13

Brinell Hardness Annealed HB Max 230

Delivery condition Hot forged and Annealed Peeled

Forged steel round bar

Grade:H13

Similar grade: 1.2344,SKD61

Chemical compostion:

C:0.37/0.44; Si:0.90-1.20; Mn:0.30/0.50;P:Max 0.025;S:Max 0.025,

Cr:4.80-5.50,Mo:1.20-1.50;Ni:Max 0.30  V:0.90/1.10;

Standard: E ASTM A370

Grain Size:6-8

Brinell Hardness: Annealed HB Max 230

Steel ingot:EAF+LF+VD or ESR

Delivery condition: Hot forged +Annealed+Rough Turned.

Or only forged of black surface bars.

As forged condition straightness: Max 4mm/m,  RT bar straightness: Max 2mm/m

As forged diameter tolerance: -0/+8mm; RT diameter tolerance:-0/+3 mm

Non-metal inclusion: as per ASTM E45 A/B/C/D heavy  Max 1.5, thin  Max 1.5

Size: 90mm~800mm

Length: 4.0m and up(Or fix length according the customer requirement).

Inspecting: UTS according to SEP 1921 C/c,D/d,E/e,A388 or GB/T 6402

Cut both ends

Min. qty.: 15MT per size.

Delivery: By both negotiation.(By bulk shippment or By Container)

Other Steel Grade:Carbon Steel:SAE1020,SAE1045,SAE1050,SAE1060;SAE1018,SAE1040,

Alloy Steel: SAE8620, SAE4130,SAE4340, SAE4140, SAE5140;SAE9840,

Tool Steel;:H13

Manufacturer:Baosteel Group Co.,Ltd.