JIS G3445 Carbon Steel Mechanical Tubing

JIS G3445 mechanical pipe is a Japanese standard carbon steel pipe used for mechanical structures. It is suitable for applications such as machinery, automobiles, bicycles, furniture, appliances, and other mechanical parts.

JIS G3445 Carbon Steel Mechanical Tubing Specification

Standard: JIS g3445

Material: STKM11A.STKM12(A,B,C),STKM 13(A,B,C),STKM14(A,B,C),

OD: 20-260mm

WT: 2-26mm

Length: 3m to 8m long,

Delivery condition: Hot rolled, cold worked. stress relieved, annealed, normalized.

Application: machinery, automobile, bicycle, furniture, appliance, and other mechanical parts as carbon steel pipe.

JIS G3445 Mechanical Tube Chemical Composition

Standard	Steel Grade	Chemical Composition %
		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

JIS G3445 Steel Tubes Mechanical Properties

Standard	Steel Grade	Mechanical Properties
		Tensile Strength MPa	Yield Strength MPa	Elongation %
JIS G3445	STKM11A	≥295	/	≥35
	STKM12A	≥345	≥175	≥35
	STKM12B	≥390	≥275	≥25
	STKM12C	≥470	≥355	≥20
	STKM13A	≥375	≥215	≥30
	STKM13B	≥440	≥305	≥20
	STKM13C	≥510	≥380	≥15
	STKM14A	≥410	≥245	≥25
	STKM14B	≥500	≥355	≥15
	STKM14C	≥550	≥410	≥15

JIS G3445 Steel Tubes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FAQ

Q: Will you deliver on time?
A: Yes, we promise to provide the best quality products and deliver them on time. Integrity is the core principle of our company.

Q: Do you provide samples? Are they free or is there an additional charge?
A: Samples can be provided to customers free of charge, but the courier fee will be borne by the customer.

Q: Do you accept third-party inspections?
A: Yes, we absolutely do.

Q: How do you guarantee the quality of your products?
A: Each product is produced in a certified workshop and inspected piece by piece by workers according to national QA/QC standards. We can also issue a warranty certificate to customers to guarantee quality.

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