Carbon Steel Tubes for Automobile Parts

1. Product Information
With optimal forming technology and ERW(Electric Resistance Welding) method, the pipe with outside diameter less than 92.mm
High strength, extremely thick(up to T/OD=25%, Sch.160) ERW steel pipes
Eddy Current Testing(ECT), non-destructive testing guarantees weld ability -> API J-55
The pipe with inside diameter of more than 16mm, and with its internal bead removed -> Automobile parts, Solid-drawn pipes, having strength for the products that require precision measurement.

2. The Application of our Products
Based on 15years of experiences to manufacture steel pipe roll forming and the outstanding technology for roll design, we founded the company for steel pipe manufacturing in 2006, and made the company established as a material pipe specialty company.
In particular, due to the weight reduction of the materials(steel bar) for automobiles, we are manufacturing and supplying hollow steel pipes. - Steering Shaft, Rack Bar, Tie Rod, Axle Housing, Door Impact Beam, Propeller Shaft, etc.
Hydraulic machine, Machine parts; Cylinder rod, Bush, and Roll, etc.
Electric, electronic goods(mainly by applying Cold Rolled Coil); Comp case of Air Conditioner, etc.

3. Demanding Sties and Distribution Flow
After second processing by a company of drawing, or a processing company, the products are delivered to automobile companies(Hyundai Motors, GM), and electronic company(LG).
We have the capacity of designing and manufacturing to meet the diverse requirements of the demanding sites(outside diameter/shape/thickness/cost down)

4. Ways to Receive Orders
Adoption of mass customization method(Steel type, thickness and application is considered in the design work to meet the customer's requirements)
"O.E.M type of various products with small quantity(Steel type, thickness and application is considered in considered in the design work to meet the customer's requirements)"

5. Product Ranges
Product Standard
a. KS D 3517;STKM, JIS G 3445; STKM, JIS G 3472;STAM
b. KS D 3507(SPP), D3562(SPPS380), D3631(SPPG) JIS G 3542(SGP), JIS G 3454(STPG), ASTM A53A, ASTM A795
Outside Diameter : Ø26.7 ~ Ø92.5, 20A~80A
Steel Type : HR, PO, CR
Materials : STKM11A~20A, SAE1008~1023, STK290~500 SPHT1~SPHT4, S5C~S45C
Thickness : 1.5mm~9.0mm, SCH#5~#160

6. Carbon steel tubes for Machine, Automobile Structural Purposes
(KS D3517; STKM/JIS G3445; STKM/JIS G3472; STAM/ASTM A513/BS980/BS6323)

Tolerance of outside diameter
* It should be managed at the strictest tolerance of #3 and under.

Outside Diameter	G3445 #3	G3472 #3	MS PIPE
under 25mm	+, - 0.12mm	+, - 0.12mm	+, - 0.12mm
25mm to 40mm	+, - 0.15mm	+, - 0.15mm	+, - 0.15mm
40mm to 50mm	+, - 0.18mm
50mm to 60mm	+, - 0.20mm	Depending on consultation
50mm to 60mm	+, - 0.23mm		+, - 0.18mm
70mm to 80mm	+, - 0.25mm
80mm to 90mm	+, - 0.30mm		+, - 0.20mm
90mm to 100mm	+, - 0.40mm
100mm and over	+, - 0.5 %		Depending on consultation

Tolerance of Thickness
* It should be managed at the strictest tolerance of #3 and under for G3445.

G3445			G3472			MS PIPE
#1	Under 4mm	+ 0.6mm	#1	Under 3mm	+, - 0.3mm	Under 2mm	+, - 0.15mm
		- 0.5mm		3mm and over	+, - 10%
	4mm and over	+ 15%	#2	Under 1.6mm	+0.2, -0.15
		- 12.5%		1.6 ~2.3	+, - 0.2mm
#2	Under 3mm	+, - 0.3mm		2.3 and over	+, - 0.25mm	2mm and over	+, - 8%
	3mm and over	+, - 10%		3.0 and over	+, - 8%
#3	Under 2mm	+, - 0.15mm	#3	Under 2mm	+, - 0.10mm
	2mm and over	+, - 8%		2mm and over	+, - 5%
			#3 is applied to plug drawn pipes. It is not applied to a welding part.			If stricter tolerance wanted, a preliminary consultation is available.

Tolerance of the height of internal bead
* It depends basically on the requirement of demanders.

G3445	G3472 3 G3472 3			MS PIPE
Regulation not available.	#1	Welding		In case inside diameter is 16mm or over, cutting is needed in principle.
	#2	Pressing	No regulation
There should be no harmful defect.	#3	Cutting	+0.45, -0	Without specific description
	#4		+0.25, -0	Welding part	+0.1, -0.2
	#5		+0.20, -0.10	Heat affecting part	+0.2, -0
	#6		+, - 0.20	A preliminary consultation is available.

Automobile Parts Absorber

Steel Tube Being Used For Automobile Parts

Steel Pipes For Auto-Motor Cycle

Auto Motor Cycle Parts Diagram

Applications

Standards	Classifications		Descriptions	Applications
JIS3445 Carbon Steel Tube For Mechanical Structure	Class 11	A	STKM11A	Exhaust Pipe, Steering, Shock Absorber, Outer Diameter, Safety Handle, Print Roll, Motor Cover, Furniture
	Class 12	A	STKM12A	Cross Member, Axle Tube, Mechanical Roll, Bearing, Back Metal
		B	STKM12B	Propeller, Shaft, Oil Pressure, Cylinder
		C	STKM12C	Front Took, Front Hook
	Class 13	A	STKM13A	Propeller Shaft, Steering System, Cross Member, Kiru Pipe
		B	STKM13B	Oil Pressure Clinder, Breaking Back Metal, Mechanical Roll, Axle Tube, Propeller Shaft, Steering System
		C	STKM13C	Propeller Shaft, Axle Tube, Steering System
	Class 14	A	STKM14A	Steering System
		B	STKM14B	Cross Member, Push Tube, Axle Housing
		C	STKM14C	Axle Tube, Oil Pressure Cylinder
	Class 15	A	STKM15A	Cross Member, Frame Valve Locker Shaft, Side Member, Axle Tube, Steering System, Exhaust Tube
		C	STKM15C	Propeller Shaft