JIS G3445 STKM11A, STKM 12A, STKM 12C, STKM13A is the standard applicable to carbon steel tubes for machine structural purposes
Application
JIS G3445 STKM 11A, STKM 12A, STKM 12C, STKM 13A, STKM 13C, STKM 15A, STKM 15C, STKM 17A, STKM 17C carbon steel tubes used for machinery, automobiles, bicycles, furniture, appliances and other machine parts.
Grade and Designation
The grade and designation of the tube shall be as given as follows table.
The sub classification letter symbols A, B and C are used to indicate distinction of method of manufacturing the tube, cold working process, heat treatment, etc.
Grade
Designation
Grade 11
A
STKM 11A
Grade 12
A
STKM 12A
B
STKM 12B
C
STKM 12C
Grade 13
A
STKM 13A
B
STKM 13B
C
STKM 13C
Grade 14
A
STKM 14A
B
STKM 14B
C
STKM 14C
Grade 15
A
STKM 15A
C
STKM 15C
Grade 16
A
STKM 16A
C
STKM 16C
Grade 17
A
STKM 17A
C
STKM 17C
Grade 18
A
STKM 18A
B
STKM 18B
C
STKM 18C
Grade 19
A
STKM 19A
C
STKM 19C
Grade 20
A
STKM 20A
Click to download the MTC of JIS G3445 STKM 11A.
Click to download the details of JIS G3445 STKM 11A.
CTS provides hard chrome plated bar. Send your inquiry to cts@ctstubes.com. What is hard chrome plated? Hard chrome plating is an electroplating process in which chromium is deposited from a chromic acid solution . Various types of hard chrome include micro-cracked chromium, micro-porous chromium, porous chromium, and crack-free chrome Thickness of hard chrome plating ranges from 2 to 250µm. What is a chrome-plated bar? Chrome-plated bars and tubes are primarily used as piston rods, a critical component in hydraulic cylinders . The essential function of transforming hydraulic power to a linear motion while preventing the ingress of abrasive media into the hydraulic system will stipulate a set of demands on the rod.
The inspection of tube straightness. If straightness is required for, e.g., 0.5:1000, set three tolerance gauges in the middle and at both ends. Rotate the tube while observing its straightness through the gauges. It's more accurate, standardized, and efficient than measuring only with a ruler by hand. Check ctstubes.com for more.
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