JIS G3444 Stk290, Stk400, Stk500, Stk490, Stk540 Structural Steel Pipe

• Customization: Available
• Type: Seamless
• Technique: Cold Drawn
• Model NO.: KM-71
• Surface Treatment: Bright Annealing
• Usage: Machinery Industry, Mining, Construction & Decoration, Special Purpose
• Section Shape: Round
• Size: 6-60mm
• Wt: 1-12mm
• Length: 1m-12m
• Packaging Detail: Standard Sea-Worthy Package
• Loading Port: Chinese Main Port
• Delivery Time: 30 Days Ex Mill
• Transport Package: Standard Sea-Worthy Package
• Specification: 6-60mm
• Trademark: Kingmetal
• Origin: Chinese Main Port
• Production Capacity: 2000 Ton/Tons / Month

Product Description

JIS G3444 STK290,STK400,STK500,STK490,STK540 structural steel pipe

 

 

Quick Detail:

 

Standards: JIS G3444

Grade: STK290, STK400, STK500, STK490, STK540 ; STK30, STK41,STK,50,STK 51,STK55

Outer Dimensions: 6mm ~ 350mm

Wall Thickness: 0.8mm ~ 35mm

Length: max 24000mm

 

 

Description:

 

Standards: JIS G3444

Grade: STK290, STK400, STK500, STK490, STK540

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.

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

 

 

JIS G3444 Chemical composition,%:

 

Steel grade	Chemical composition,%
	C	Si	Mn	P	S
STK290	-	-	-	≤0.050	≤0.050
STK400	≤0.025	-	-	≤0.040	≤0.040
STK500	≤0.24	≤0.35	0.30-1.30	≤0.040	≤0.040
STK490	≤0.18	≤0.55	≤1.50	≤0.040	≤0.040
STK540	≤0.23	≤0.55	≤1.5	≤0.040	≤0.040

 

 

 JIS G3444 Mechanical Properties:

 

Mechanical  properties	Tensile strength, N/mm2	Yield strength, N/mm2	Elongation,%		Bending property		Weld tensile  strength,N/mm2
			Longitudinal	Transverse	Angel of bending	ID
OD	All	All	≥40mm		≤50mm		≥350mm
STK290	≥290	-	≥35	≥25	90o	6D	≥290
STK400	≥400	≥235	≥23	≥18	90o	6D	≥400
STK500	≥500	≥355	≥15	≥10	90o	6D	≥500
STK490	≥490	≥315	≥23	≥18	90o	6D	≥490
STK540	≥540	≥390	≥20	≥16	90o	6D	≥540

 

 

Applications:

 

Mainly for general structural purpose.

Tube also be widely used for machinery, automobiles, bicycles, furniture, appliances and other machine parts.

 

 

Competitive Advantage:

 

Kingmetal steel  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.