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JIS G3445 Oil-dip Machine Structural Mild Steel Tube , STKM11A STKM12A Carbon Steel Pipe

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JIS G3445 Oil-dip Machine Structural Mild Steel Tube , STKM11A STKM12A Carbon Steel Pipe

Country/Region china
City & Province jiangsu
Categories Metal Casting Machinery

Product Details

JIS G3445 Oil-dip Machine Structural Mild Steel Tube , STKM11A STKM12A Carbon Steel Pipe

 

 

Quick Detail:

 

Products: JIS G3445

Carbon steel tubes for machine structural purposes .

Grade:  STKM11A / STKM12A / STKM12B / STKM12C / STKM13A etc

Size:(mm)
Out Dimensions: 6mm ~ 350mm
Wall Thickness: 0.8mm ~ 35mm
Length: Fixed(6m,9m,12,24m) or normal length(5-12m)

 

 

Description:

 

Standards: JIS G3445

Carbon steel tubes for machine structural purposes .

Size (mm):

Outer Dimensions: 6mm ~ 350mm

Wall Thickness: 0.8mm ~ 35 mm

Length: max 24000mm

Application: Tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts.

The main products of steel / steel grade: STKM11A, STKM12(A,B,C), STKM13(A,B,C), STKM14(A,B,C).

Packing: Beveled/black painting/ plastic caps/ in bundles/ steel strips/ wooden protection
Inspection and Test: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength,Elongation, Flaring, Flattening, Bending, Hardness, Impact Test),Surface and Dimension Test,Nodestructive Test, Hydrostatic Test.
Surface treatment:Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Mark: As requested.

Delivery Condition:Annealed, Normalized, Normalized and Tempered

 

 

Chemical Composition (%):

 

 

 

 Chemical Composition (%)

 Standard

Steel Grade

C

Si

Mn

P

S

JIS G3445

STKM11A

≤0.12

≤0.35

≤0.60

≤0.040

≤0.040

STKM12A

≤0.20

≤0.35

≤0.60

≤0.040

≤0.040

STKM12B

STKM12C

STKM13A

≤0.25

≤0.35

0.30-0.90

≤0.040

≤0.040

STKM13B

STKM13C

STKM14A

≤0.30

≤0.35

0.30-1.00

≤0.040

≤0.040

STKM14B

STKM14C

 

 

Mechanical Properties:

 

Grade

Yield Strength (Mpa)

Tensile Strength (Mpa)

Elongation (%)

STKM11A

 

≥290

≥35

STKM12A

≥175

≥340

≥35

STKM12B

≥275

≥390

≥25

STKM12C

≥355

≥470

≥20

STKM13A

≥215

≥370

≥30

STKM13B

≥305

≥440

≥20

STKM13C

≥380

≥510

≥15

STKM14A

≥245

≥410

≥25

STKM14B

≥355

≥500

≥15

STKM14C

≥410

≥550

≥15

 

 

Tolerances on outside diameter:

 

Division

Tolerances on outside diameter

No. 1

Under 50 mm

?0.5 mm

50 mm

±1%

No. 2

Under 50 mm

±0.25 mm

50 mm

±0.5%

No. 3

Under 25 mm

±0.12 mm

25 mmD<40 mm

±0.15%

40 mmD<50 mm

±0.18%

 

 

Tolerances on Wall Thickness:

 

Division

Tolerances on outside diameter

No. 1

Under 4 mm

+0.6 mm-0.5 mm

4 mm

+15%-12.5%

No. 2

Under 3 mm

±0.3 mm

3 mm

±10%

No. 3

Under 2 mm

±0.15 mm

2 mm

±8%

 

 

Applications:

 

Tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts.

 

 

Competitive Advantage:

 

Huacheng Pipe Making Company is one of the largest seamless steel pipe manufacturers in China.We’ve passed API 5L,API 5CT, PED, BV, TUV certification and ISO quality system certification.With good quality and competitive price, we believe we could be your reliable supplier.

 

Factroy Pictures:

 

Pipe & Tube Processing

Factory Equipments:

 

Production Line:

Quality Control:

 

 

Steel Pipe & Tube Application:

Package:

Export Standard / Wooden Box

Main Certificates:

PED ISO BV TUV etc.

Main Customers:

 

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