Low Carbon Steel Tube for Treadmill Frame

OD(mm): 25-60 mm Thickness(mm): 0.8-3.0 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 main support frame of the treadmill, which is usually made of strong metal material to ensure stability, durability and safety.

Parameter

Chemical Composition (Heat Analysis) (%)

Grade	C	Si	Mn	P	S	Alt
E195	≤0.15	≤0.35	≤0.70	≤0.025	≤0.025	≥0.015
E235	≤0.17	≤0.35	≤1.20	≤0.025	≤0.025	≥0.015
E355	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025	≥0.015

Tolerances

Production standards and tube tolerance standards base on EN10305-3,JIS-G 3445,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(%)
E195	CR	≥195	≥330	≥8
E235	CR	≥235	≥390	≥7
E355	CR	≥355	≥540	≥5

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.