Special-Shaped Precision Steel Pipe

Introduction

The preferred material for high-end door systems is the automotive-grade Special-Shaped Precision Steel Pipe of Huagang Intelligent. It not only features high precision, a strength of ≥700MPa and a smooth surface with Ra≤0.4μm, ensuring precise alignment with the door anti-collision bar, electric tailgate pillar and other inner door panels, guaranteeing the accuracy of door functions, but also has passed IATF16949E and ISO9001 certifications, which can reduce the failure rate by approximately 80%.

Product Name		D-type tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance
HG-D001		D tube	15.5*6.4		1-5		±0.1
HG-D002		D tube	61.5*31.5		1-5		±0.1
HG-D003		D tube	60*30		1-5		±0.1

Product Name		Flower drum tube (precision cold drawn tube)
Graphic ID		Type	Size（D1/D2）		Thickness Range		Size Tolerance
HG-H001		Flower tube	31.2/30		0.5-3		±0.1
HG-H002		Flower tube	31.5/30.3		0.5-3		±0.1

Product Name		Eye tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance
HGYJ001		Eye tube	30*20		0.5-5		±0.1
HGYJ002		Eye tube	40*24		0.5-5		±0.1
HGYJ003		Eye tube	42.5*26.5		0.5-5		±0.1

Product Name		Triangle tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance

Product Name		Seven corner tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Size Tolerance
HGQJ001		Heptagonal tube	12.15		±0.1
HGQJ002		Heptagonal tube	11.5		±0.1
HGQJ003		Heptagonal tube	11		±0.1
HGQJ004		Heptagonal tube	10.75		±0.1
HGQJ005		Heptagonal tube	10.3		±0.1
HGQJ006		Heptagonal tube	10.2		±0.1
HGQJ007		Heptagonal tube	10.15		±0.1
HGQJ008		Heptagonal tube	10.1		±0.1
HGQJ009		Heptagonal tube	9.8		±0.1

Product Name		Octagonal tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Thickness Range		Size Tolerance
HG-8B001		Octagonal pipe	97.6		0.5-5		±0.1
HG-8B002		Octagonal pipe	92		0.5-5		±0.1
HG-8B003		Octagonal pipe	27		0.5-5		±0.1
HG-8B004		Octagonal pipe	20.2		0.5-5		±0.1
HG-8B005		Octagonal pipe	18.6		0.5-5		±0.1

Product Name		Hexagonal tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Thickness Range		Size Tolerance
HG-6BB001		Hexagonal tube	118		0.5-5		±0.1
HG-6BB002		Hexagonal tube	109		0.5-5		±0.1
HG-6BB003		Hexagonal tube	100		0.5-5		±0.1
HG-6BB004		Hexagonal tube	92		0.5-5		±0.1
HG-6BB005		Hexagonal tube	91.5		0.5-5		±0.1
HG-6BB006		Hexagonal tube	86.6		0.5-5		±0.1
HG-6BB007		Hexagonal tube	83.5		0.5-5		±0.1
HG-6BB008		Hexagonal tube	75		0.5-5		±0.1
HG-6BB009		Hexagonal tube	36.7		0.5-5		±0.1
HG-6BB010		Hexagonal tube	24		0.5-5		±0.1
HG-6BB011		Hexagonal tube	22		0.5-5		±0.1

Product Name		Triangular tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Thickness Range		Size Tolerance
HG-Z3J001		triangle	10.5		0.5-5		±0.1
HG-Z3J002		triangle	10.38		0.5-5		±0.1

Product Name		Triangle tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance
HG-3J001		Triangular tube	106*64		0.5-5		±0.1
HG-3J002		Triangular tube	85*45		0.5-5		±0.1
HG-3J003		Triangular tube	80*41		0.5-5		±0.1

Product Name		Trapezoidal tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H*W）		Thickness Range		Size Tolerance
HGTX001		ladder-shaped tube	92*60*46		0.5-5		±0.1

Product Name		Irregular shaped tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance
HGYX-001		shaped tube	31.9*12.4		0.5-5		±0.1

Product Name		Irregular shaped tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Thickness Range		Size Tolerance
HGYX-001		shaped tube	21.5		0.5-5		±0.1
HGYX-002		shaped tube	25		0.5-5		±0.1
HGYX-003		shaped tube	22		0.5-5		±0.1

Product Name		Irregular shaped tube (precision cold drawn tube)
Graphic ID		Type	Size（D）		Thickness Range		Size Tolerance
HGYX-001		shaped tube	40		0.5-5		±0.1
HGYX-002		shaped tube	37.4		0.5-5		±0.1
HGYX-003		shaped tube	34.8		0.5-5		±0.1

Product Name		Irregular shaped tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance
HGYX-001		shaped tube	40*30		0.5-5		±0.1

Product Name		Octagonal tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance

Product Name		Irregular shaped tube (precision cold drawn tube)
Graphic ID		Type	Size（D*H）		Thickness Range		Size Tolerance

Core Advantages

1. The high strength (tensile strength ≥ 700 MPa) of the precision steel pipes used in the door anti-collision beam provides critical protection against side impacts. High precision ensures a precise fit between the anti-collision beam and the door inner panel, while uniform wall thickness ensures more balanced energy absorption, effectively dissipating impact forces during a collision and improving the vehicle's safety rating.

2. High surface finish (Ra ≤ 0.4 μm) ensures smooth, non-sticky operation of the guide rails. High stability ensures stable performance even in extreme temperatures.

3. High corrosion resistance ensures the lock body will rust-free even in humid environments, ensuring driving safety. High strength allows the electric tailgate strut to withstand hundreds of thousands of opening and closing cycles without sagging or deformation. This non-sticky operation is particularly important in door system applications, ensuring precise door functions such as preventing deformation. 4. After the quality system (TF16949E and ISO9001) certificate certification, Huagang Intelligent's precision steel pipe special-shaped tube can become the preferred material for high-end automotive door systems, helping manufacturers to increase the service life of the door system by more than 2 times and reduce the failure rate by 40%.