Stkm 11A 12A SPCC SPHC Automotive Seamless Steel Tube

• Customization: Available
• After-sales Service: Change/Return
• Warranty: 10 Year, 1 Year
• Technique: Hot Rolled, Cold Drawn
• Material: Carbon Steel, Carbon Steel
• Surface Treatment: Black, Black
• Usage: Pipeline Transport, Boiler Pipe, Machinery Industry
• Section Shape: Round, Round
• After-Sales Service: Change/Return
• Od: 4~60mm.
• Wt: 0.5-7mm
• Material Grade: Stkm11A, Stkm12A, Stkm13A, St52, E355 etc.
• Manufacturing Standards: JIS 3445, ASTM A519
• Transport Package: Seaworthy Export Packing
• Specification: ASTM, JIS, DIN
• Trademark: KM
• Origin: China
• HS Code: 730431
• Production Capacity: 3000 Tons/Month

Product Description

Stkm 11A 12A SPCC SPHC Automotive Seamless Steel Tube

Material: 
STKM 11A, STKM 12A, STKM13A
SAE1010, SAE1020, SAE1045

OD: 4-60mm
Wall thickness: 0.5-7mm

Length: 3 - 10 m, approximate length with tolerance +/-10 mm
 
Manufacture process:
Synopsis of Process Routing: Quality Carbon steel - Cold Drawn - Heat Treatment Without Oxidization (NBK Status) - Nondestructive Testing- Flushing The Internal Hole With Special Equipment Under The High Pressure -Dealing With Antirust Oil On Surface - Plastic Capping On Both Ends.


Applications:
Precision tubes are used in hydraulic system,automobile,mechanical parts and in the occasion where the high precision,brightness,cleanness and mechanical properties of the tube are required.
 

Steel grades for carbon Precision steel tube

Standard	Material
EN10305-1	E215, E235, E255, E355,C45E, 30GrMo
DIN2391	ST35, ST45, ST52, ST37.4
BS6323/4	CFS3,CFS4,CFS5,CFS8
ASTMA519	SAE1010,SAE1020,SAE1045
JISG3445	STKM11A,STKM13A
SAEJ524	SAE1010

 
 Tolerance Table Of Steel Tube

NAME	SCOPE(mm)	GB (mm)	DIN (mm)	Enterprise control(mm)	Special high-precision(mm)
Out Diameter	4-30	±0.1	±0.08	±0.05	±0.03
	31-40	±0.15	±0.15	±0.05	±0.03
	41-50	±0.20	±0.20	±0.08	±0.03
	51-60	±0.25	±0.25	±0.08	±0.03
Wall thickness	0.5-7	±10%,Min±0.12	±10%	±10%,Min±0.05	±10%,Min±0.03

 
Delivery condition and heat treatment processing of carbon Precision steel tube

Delivery Condition	Heat treatment process
+C	Cold drawn/hard.After the last cold forming,no heat treatment.
+LC	Cold drawn/soft.After the last heat treatment follows the cold drawing there is a light finishing pass.
+SR	Cold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+A	After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere.
+N	Normalized. After the last cold drawing process the tubes are annealed in a controlled atmosphere.