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JIS G3445 Carbon Steel Tube for Machine Structural Purpose

Price:	Negotiable/Piece
Trade Terms:	FOB,CFR,CIF
Min Order:	5/Ton
Pay Type:	L/C,T/T

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JIS G3445 Carbon Steel Tube for Machine Structural Purpose
Standard: JIS G3445
Steel Grade: STKM11A, STKM12(A, B, C), STKM13(A,B,C), STKM14(A, B ,C) etc;
Application: used for machinery, automobiles, bicycles, furniture, appliances and other machine parts.
Testing items: tension test, bending test, flattening test

Chemical Composition: %
Grade		Symbol of grade	C	Si	Mn	P	S	Nb or V
11	A	STKM11A	0.12 max	0.35 max	0.60 max	0.040 max	0.040 max	---
12	A	STKM12A	0.20 max	0.35 max	0.60 max	0.040 max	0.040 max	---
	B	STKM12B
	C	STKM12C
13	A	STKM13A	0.25 max	0.35 max	0.30 to 0.90	0.040 max	0.040 max	---
	B	STKM13B
	C	STKM13C
14	A	STKM14A	0.30 max	0.35 max	0.30 to 1.00	0.040 max	0.040 max	---
	B	STKM14B
	C	STKM14C
15	A	STKM15A	0.25 to 0.35	0.35 max	0.30 to 1.00	0.040 max	0.040 max	---
	C	STKM15C
16	A	STKM16A	0.35 to 0.45	0.40 max	0.40 to 1.00	0.040 max	0.040 max	---
	C	STKM16C
17	A	STKM17A	0.45 to 0.55	0.40 max	0.40 to 1.00	0.040 max	0.040 max	---
	C	STKM17C
18	A	STKM18A	0.18 max	0.55 max	1.50 max	0.040 max	0.040 max	---
	B	STKM18B
	C	STKM18C
19	A	STKM19A	0.25 max	0.55 max	1.50 max	0.040 max	0.040 max	---
	C	STKM19C
20	A	STKM20A	0.25 max	0.55 max	1.60 max	0.040 max	0.040 max	0.15 max

Mechanical Property:
Grade		Symbol of grade	Tensile Strength N/mm2	Yield Strength	Elongation
Grade		Symbol of grade	Tensile Strength N/mm2	N/mm2	%
11	A	STKM11A	≥290	-	≥35
12	A	STKM12A	≥340	≥175	≥35
	B	STKM12B	≥390	≥275	≥25
	C	STKM12C	≥470	≥355	≥20
13	A	STKM13A	≥370	≥215	≥30
	B	STKM13B	≥440	≥305	≥20
	C	STKM13C	≥510	≥380	≥15
14	A	STKM14A	≥410	≥245	≥20
	B	STKM14B	≥500	≥355	≥10
	C	STKM14C	≥550	≥410	≥10
15	A	STKM15A	≥470	≥275	≥22
15	C	STKM15C	≥580	≥430	≥12
16	A	STKM16A	≥510	≥325	≥20
16	C	STKM16C	≥620	≥460	≥12
17	A	STKM17A	≥550	≥345	≥20
17	C	STKM17C	≥650	≥480	≥10
18	A	STKM18A	≥440	≥275	≥20
	B	STKM18B	≥490	≥315	≥18
	C	STKM18C	≥510	≥380	≥10
19	A	STKM19A	≥490	≥315	≥28
19	C	STKM19C	≥550	≥410	≥15
20	A	STKM20A	≥540	≥390	≥23

Markets:	North America,South America,Eastern Europe,Southeast Asia,Africa,Oceania,Mid East,Eastern Asia,Western Europe

Shanghai Vastar International Co., Ltd is a leading global supplier for pipes, fittings and flanges, specializing in line pipe, OCTG, boiler tube, precision tube, mechanical tube, flanges and pipe fittings such as elbows, tees, reducers, caps, etc. They are widely used in more than 20 industries including petroleum, petrochemical, infrastructure, power and solar energy, machinery, automotive, food, pharmaceutical, semiconductor, decoration, general construction and so on. Vastar not only offers this full line of pipeline and tubular products, but also offers a comprehensive range of additional services including sourcing, quality controlling, logistics and after-sales support.

Based on our principle "excellent quality, perfect service", we have been cooperating with customers from over 30 countries like Italy, France, US, UK, Brazil, Kazakhstan, Singapore, Thailand, UAE, Israel, South Africa, etc. And we are and will be continuously providing our professional services to a wide range of customers.

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