Seat Frame Tube

Name: Seat Frame Tube
Brand: CBIES Precision Seamless Steel Welded Tube Manufacturer
Availability: InStock
Rating: 4.5 (89 reviews)

Specification (mm) Round tubes OD: 16, 19, 22, 25, 25.4, 28, 30, 32, etc. Square tubes OD: 28x28, 35x35, etc. Rectangle tubes OD: 25x30, etc. Thickness: 2.0, 2.5, etc. Standard: DIN 17100, DIN 17102, EN10268, EN10338, GB/T 11253, GB/T 1591, etc. Grade: ST37-2G, ST52-3G, STE420, STE500, STE550, HC340LA, HC420LA, HC500LA, HCT780X, HCT980X, Q235B, Q355B, etc. Process: High-frequency welding, cutting, bending, orifice-closing, chamfering, stamping, expanding, laser cutting, punching, bevel cutting, welding.

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Specification
Our advantage

Product Features

Automotive seat frames serve as the pivotal structural elements supporting the entire seat assembly, customarily crafted from high-strength metallic substances like steel or aluminum alloys.

Their design configuration undergoes meticulous calculations and optimizations to guarantee steadfast support and comfortable seating under passenger postures and external pressures.

The shape and curvature of these seat skeletons often integrate ergonomic principles, catering to optimal support and a human-centric seating experience. Moreover, seat frames must adhere to stringent safety regulations, ensuring they deliver effective protection in instances of collisions or unforeseen incidents.

Parameter

Chemical Composition (Heat Analysis) (%)

Grade	Steel number	C	Si	Mn	P	S	Alt
E235	1.0308	≤0.17	≤0.35	≤1.20	≤0.025	≤0.025	≥0.015
E355	1.0580	≤0.22	≤0.55	≤1.60	≤0.025	≤0.025	≥0.02

Mechanical Properties

Grade	Steel number	Minimum values for the delivery conditions
		+CR		+A		+N
		R_m MPa	A %	R_m MPa	A %	R_m MPa	R_eH	A %
E235	1.0308	390	7	315	25	340-480	235	25
E355	1.0580	540	5	450	22	490-630	355	22

Tolerance

Production standards and tube tolerance standards base on JIS G 3445,ASTM A513, EN10305-3, 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.