 Origin |
Korea |
ELECTRIC RESISTANCE WELD
Because precision of product size, variety, workability and various mechanical and chemical properties are needed, material tube is produced as various kinds of small quantity for only special applications.
Processed seamless steel tube, SRM steel tube and bar had been widely used before, but electric resistance welding steel tube showing good drawing capacity and workability as precision parts as well as providing reasonable price has been developed recently due to the development of techniques for edge treatment, forming, internal bead removing, facility installation and non-destructive test.
The carbon steel material tube market in some advanced countries are changing its market share from the seamless steel tube to the electric resistance welding steel tube.
The Japanese companies such as NSC, SUMITOMO and NKK retain the production facilities of material tube.
Quality Properties
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Welding Assurance
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Ultrasonic Test (U.T), Eddy-Current-Test (E.C.T)
Welding Area Detection, Adoption of the Advanced Welding Technique. |
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Size Precision
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Outer Diameter, Thickness Deviation, Internal Bead Cutting Level (Cutting Depth, Width, Cutting Surface) Precision. |
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Mechanical Properties
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Special quality design for raw materials is needed in accordance with their applications. (Workability, strength and so on)
For electric resistance welding, it is necessary to share various kinds of receiving orders and developing markets. |
Applications
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Vehicle and Motorcycle
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Light weigh and high tension, moderate brightness of ball steel
- STEERING SHAFT, RACK BAR DRIVE SHAFT, TIE ROD, AXLE HOUSING, PROPELLER SHAFT, ROCKER ARM SHAFT, DOOR IMPACT BEAM.
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Machinery
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HYDRAULIC CYLINDERS, BUSHINGS, ROLLS
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Electronic Products
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COMP CASE, MOTOR CASE, TV BRAUN TUBE (ELECTOMAGNETIC WAVE CUT-OFF SUPPORT)
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Others
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PARTS FOR SPECIAL APPLICATIONS, STEEL PIPES FOR BOILERS (PULL BODY HEAT TREATMENT) |
Product Size Range
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Type of Order Receiving
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O.E.M type of various products with small quantity
(Steel type, thickness and application is considered in the design work to meet the customer’s requirements)
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Product Ranges
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A. Outer Diameter : 31.8 m/m ~ 90.0m/m
B. Steel Type : HR, PO, CR
C. Material : STKM 11A ~16A, SAE 1008 ~ 1035, S5C ~ S45C, ASTM
D. Thickness : SCH #40 ~ #160
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Application
Process for each Appilcation
Automobile Parts Absorber
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