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Precision Cold Rolled Steel Tube

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Product details

Product Name: JIS G3445 STKM11A STKM12A STKM13A 

Precision Carbon Steel Tubes for Machine Structural Purposes

Material: STKM11A, STKM12(ABC), STKM13(ABC)
Size Range: OD: 6-88mm, WT: 1-15mm, Length: 5.8m/6m, maximal 11.8m


Quality Control:
1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing or Cold Rolling, On line inspection
5. Heat Treatment:BKS, GBK, NBK
6. Straightening/Cutting to specified length/Finished Measuring Inspection
7. Quality Testing in own lab with Tensile Strength, Yield Strength, Elongation, Hardness, Straightness, etc.
8. Packing and Stocking.
 
100% Eddy Current Testing.
100% Size Tolerance Checking.
100% Tube surface checking to avoid surface defects.


Product Name JIS G3445 Precision Carbon Steel Tubes for Machine Structural Purposes
Material STKM11A, STKM12(ABC), STKM13(ABC)
Delivery Condition HR,CW,SR,A,N
Standard JIS G3445
Size Range OD: 6-88mm, WT: 1-15mm
Application Machine Structural Purposes
Round Billet Bao Steel, Xingcheng Steel, Huai Steel, Zhongtian Steel
Keyword JIS G3445
Certificate TS16949, ISO 9001
HS code 7304319000
Delivery Time 45 days
Packing Bundles or Wooden Boxes


CHEMICAL COMPOSITION unit:% max
Steel Grade C S Mn P S
STKM 11A 0.12 0.35 0.60 0.040 0.040
STKM 12A 0.20 0.35 0.60 0.040 0.040
STKM 12B
STKM 12C
STKM 13A 0.25 0.35 0.30-0.90 0.040 0.040
STKM 13B
STKM 13C
STKM 14A 0.30 0.35 0.30-1.00 0.040 0.040
STKM 14B
STKM 14C
STKM 15A 0.25-0.35 0.35 0.30-1.00 0.040 0.040
STKM 15C
STKM 16A 0.35-0.45 0.40 0.40-1.00 0.040 0.040
STKM 16C
STKM 17A 0.45-0.55 0.40 0.40-1.00 0.400 0.040
STKM 17C
STKM 18A 0.18 0.55 1.50 0.040 0.040
STKM 18B
STKM 18C
STKM 19A 0.25 0.55 1.50 0.040 0.040
STKM 19C
STKM 20A 0.25 0.55 1.60 0.040 0.040


MECHANICAL PROPERTIES
Steel Grade

Tensile strength

Mpa min

Yield strength

Mpa min

Elogation%

min

STKM 11A 290 - 35
STKM 12A 340 175 35
STKM 12B 390 275 25
STKM 12C 470 355 20
STKM 13A 370 215 30
STKM 13B 440 305 20
STKM 13C 510 380 15
STKM 14A 410 245 25
STKM 14B 500 355 15
STKM 14C 550 410 15
STKM 15A 470 275 22
STKM 15C 580 430 12
STKM 16A 510 325 20
STKM 16C 620 460 12
STKM 17A 550 345 20
STKM 17C 650 480 10
STKM 18A 440 275 25
STKM 18B 490 315 23
STKM 18C 510 380 15
STKM 19A 490 315 23
STKM 19C 550 410 15
STKM 20A 540 390 23
JIS G3445 Steel TubeJIS G3445 Structural Steel Tube



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Address: Ningbo, China


Main Product: Seamless Bearing Tubes, Mining Drill Pipes, Boiler Steel Tubes, Alloy Mechanical Tubing , Precision Steel tubes, Stainless Steel tubes

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