Shaped Steel Tube for Spinning Bike Frame

Name: Shaped Steel Tube for Spinning Bike Frame
Brand: CBIES Precision Seamless Steel Welded Tube Manufacturer
Availability: InStock
Rating: 4.5 (89 reviews)

OD(mm): Customized according to customer design Thickness(mm): 1.2-3.0 mm Length(mm): 50-12000. Standard: JIS G 3445, EN10305-3, GB/T 13793, etc. Grade: STKM11,STKM12, STKM13,E195,E235,E355, Q195,Q235B, Q355B, etc. For requirements out of the established specification range, we can arrange the trial production after further discussion and agreement.

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Specification
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Product Features

The frame of a spinning bike (or indoor exercise bike) is the main structural component that supports the entire body. The frame is usually made of steel and is designed for stability, robustness and comfort.

Parameter

Chemical Composition (Heat Analysis) (%)

Grade	C	Si	Mn	P	S
STKM11A	≤0.12	≤0.35	≤0.6	≤0.04	≤0.04
STKM12B	≤0.20	≤0.35	≤0.6	≤0.04	≤0.04
STKM12C	≤0.20	≤0.35	≤0.6	≤0.04	≤0.04
STKM13C	≤0.25	≤0.35	0.30-0.90	≤0.04	≤0.04

Tolerances

Production standards and tube tolerance standards base on JIS-G 3445,EN10305-3,GB/T 13793, etc. And the tolerance could be customized according to customer’s requirement.

Mechanical Properties

Grade	Status	Rpl (MPa)	Rm (MPa)	A L0=80mm (%)
STKM11A	CR/HR	--	≥290	≥35
STKM12B	CR/HR	≥275	≥390	≥25
STKM12C	CR/HR	≥355	≥470	≥20
STKM13C	CR/HR	≥380	≥510	≥15

1.Selecting high-quality carbon steel as the raw material, which boasts favorable mechanical properties, including strength and toughness and demonstrates stable performance during bending, punching and other processing procedures.

2.CBIES uses advanced high-frequency welding technology to ensure the consistent quality of weld joints, effectively minimizing welding defects. This approach enhances the strength and fatigue life of welded areas, thereby guaranteeing the safety of the product during usage.

3.During the welding process, strict control is exerted over welding parameters such as current, voltage and speed to ensure the integrity of the weld quality. Additionally, post-weld treatments are implemented, including online cleaning of the weld seam and real-time inspection for flaws, to confirm there is on defect such as cracks, incomplete penetration and slag inclusion in the welded areas.