Headrest Tubes

OD(mm): 10, 10.9, 12, 12.7, 13, 13.95, 14, 16, etc. Thickness(mm): 1.0, 1.2, 1.5, 2.0, etc. Length(mm): 50-12000. Standard: JIS G 3445, DIN 17100, DIN 17102, EN10268, EN10338, GB/T 11253, GB/T 1591, etc. Grade: STKM12B, STKM13A, STKM13B, ST37-2G, ST52-3G, HC340LA, HC420LA, HC480LA, HC500LA, HCT590X, HCT780X, HCT980X, 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
Our advantage

Product Features

Automotive headrests serve both as comfort accessories and safety devices in automobiles. During rear-end collisions, inertia causes the human body to lurch backward, and the pressure resulting from the automobile's sudden acceleration or deceleration intensely focuses on the vulnerable neck and head area. The headrest plays a crucial buffering role at this situation, mitigating the impact, protecting the head and minimizing potential injury.

Parameter

Chemical Composition (Heat Analysis) (%)

Grade	C	Si	Mn	P	S	Alt	Ti	Nb
HC340LA	≤0.1	≤0.5	≤1.1	≤0.025	≤0.025	≥0.015	≤0.15	≤0.09
HC380LA	≤0.1	≤0.5	≤1.6	≤0.025	≤0.025	≥0.015	≤0.15	≤0.09
HC420LA	≤0.1	≤0.5	≤1.6	≤0.025	≤0.025	≥0.015	≤0.15	≤0.09

Mechanical Properties

Grade	Status	Rpl (MPa)	Rm (MPa)	A L0=80mm(%)
HC340LA	Cold Rolled	340-420	410-540	≥21
HC380LA	Cold Rolled	380-480	440-560	≥19
HC420LA	Cold Rolled	420-520	470-590	≥17

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.

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.