JIS G3445 Automotive Steel Tubes ERW Welded Carbon Steel Tube For Auto Exhaust System

JIS G3445 STKM11A STKM13A ERW Welded Carbon Steel Tube For Auto Exhaust System

Size Range:
OD: 5.0-200mm
WT:0.5-20mm
Length: max 7000mm

Manufacture:

Tubes are made by welded process.

Welded tubing shall be made from flat-rolled steel by the electric-resistance welding or electric-fusion welding process.

Delivery Condition:

HR: hot rolled

CW: cold rolled

SR: stress relieved

A: annealed

N: normalized

Steel Grade/Steel Material:

Chemical Composition unit:% max
Grade		Symbol of grade	C	Si	Mn	P	S	Nb or V
11	A	STKM11A	0.12	0.35	0.60	0.040	0.040	-
12	A	STKM12A	0.20	0.35	0.60	0.040	0.040	-
	B	STKM12B
	C	STKM12C
13	A	STKM13A	0.25	0.35	0.30-0.90	0.040	0.040	-
	B	STKM13B
	C	STKM13C
14	A	STKM14A	0.30	0.35	0.30-1.00	0.040	0.040	-
	B	STKM14B
	C	STKM14C
15	A	STKM15A	0.25-0.35	0.35	0.30-1.00	0.040	0.040	-
	C	STKM15C
16	A	STKM16A	0.35-0.45	0.40	0.40-1.00	0.040	0.040	-
	C	STKM16C
17	A	STKM17A	0.45-0.55	0.40	0.40-1.00	0.040	0.040	-
	C	STKM17C
18	A	STKM18A	0.18	0.55	1.50	0.040	0.040	-
	B	STKM18B
	C	STKM18C
19	A	STKM19A	0.25	0.55	1.50	0.040	0.040	-
	C	STKM19C
20	A	STKM20A	0.25	0.55	1.60	0.040	0.040	0.15
Remarks: 1. For the tubes of Grade 15 made by electric resistance welded, the lower limit of C may be altered by agreement between the purchaser and the manufacturer. 2. For the tubes of Grade 20, Nb in combination with V may be added. In the case, the maximum content of Nb + V shall be 0.15%. 3. If necessary, alloying elements other than those in the above table may be added.

Mechanical Properties

Mechanical Properties min
Grade		Symbol of grade	Tensile strength N/mm2	Yield point or proof strength N/mm2	Elongation %
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	25
	B	STKM14B	500	355	15
	C	STKM14C	550	410	15
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	25
	B	STKM18B	490	315	23
	C	STKM18C	510	380	15
19	A	STKM19A	490	315	23
19	C	STKM19C	550	410	15
20	A	STKM20A	540	390	23
Remarks: 1. As for the tubes of outside diameter of 40mm or under, the elongation value in above table shall not be applied. However, the test result shall be recorder. Further, the elongation may be specified under the agreement between the purchaser and the manufacturer. 2. 1 N/mm2 = 1MPa

Auto Exhaust tube

JIS G3345 STKM11A STKM13A STKM13C tube

Packing: in bundles, in wooden boxes.

Product Tags:

low carbon steel pipe

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Categories	Automotive Steel Tubes
Brand Name:	TORICH
Model Number:	JIS G3445
Certification:	SO9001:2008 ，TS16949
Place of Origin:	China
MOQ:	10 ton
Payment Terms:	T/T, L/C, D/A, D/P, Western Union, MoneyGram
Supply Ability:	6000ton
Delivery Time:	30-45 days
Packaging Details:	In bundles with seaworthy packing
Product name:	Auto Exhaust Welded Steel Tube
Standard:	JIS G3445
Material:	STKM11A STKM13A
Type:	Welded
Terms Of Trade:	FOB or CIF
Brand:	TORICH
Transportation:	Ocean, air
Certificate:	ISO9001, TS16949
End protector:	Plain
MTC:	En10204.3.2B